Electrolytic furnace system for rare earth metals

Abstract

This invention discloses an electrolytic furnace system for rare earth metals, comprising: at least one electrolytic furnace device, including a furnace platform assembly with a built-in furnace cavity, a crucible assembly at the bottom of the furnace cavity, and a cooling chamber built into the furnace platform assembly; a crucible extraction device, including a multi-axis movable clamping assembly for gripping and placing the crucible assembly; a cathode device, including a cathode body, and a cathode frame and a cathode oscillation assembly connected to the cathode body, the cathode oscillation assembly actuating the cathode body and planning an oscillation path through the center of the furnace cavity; an anode device, including an anode assembly with a built-in circulation channel, at least one anode assembly having an avoidance notch located in the oscillation path, the avoidance notch accommodating the cathode body to release the furnace cavity; and a dust removal and recovery device, including two cover units, and an exhaust pipe and a cover opening and closing assembly connected to the cover body, the exhaust pipe being connected to a dust removal module.

Description

Technical Field

[0001] This invention relates to the field of rare earth electrolysis equipment technology, and more specifically to an electrolysis furnace system for rare earth metals. Background Technology

[0002] Rare earth metals and their alloys, as strategic functional materials, are primarily prepared using molten salt electrolysis. This technology uses rare earth oxides as raw materials, obtaining the metals through electrolytic reduction in a high-temperature fluoride molten salt system. During electrolysis, CO / CO2 gas is generated at the anode, while liquid rare earth metals are deposited at the cathode. The purity of these deposits directly impacts downstream high-end applications.

[0003] Traditional electrolytic furnaces typically use iron-based conductive plates as conductive components. In the high-temperature, highly corrosive molten salt environment, iron undergoes an oxidation reaction. This process increases the iron impurity content in the electrolyzed metal. More seriously, the flaking iron slag deposits at the bottom of the crucible, affecting its lifespan. It also forms iron-containing slag that is insoluble in fluoride electrolytes, disrupting bottom electrolysis and causing the iron content in the product to exceed acceptable levels.

[0004] To avoid metal contamination, most rare earth electrolysis equipment in the industry currently adopts a "full cathode lifting" design in automated processes. When it is necessary to remove the molybdenum crucible containing the metal, the cathode rod and its suspension system must be lifted as a whole to the top of the furnace. This results in high mechanical complexity of the cathode moving device, and requires the configuration of large-tonnage hydraulic cylinders and guide rail assemblies. The lifting action of the cathode consumes a lot of energy each time the crucible is picked up or placed. In addition, due to the large weight of the cathode and the long working stroke, the thermal balance of electrolysis is disrupted, reducing the average daily effective electrolysis time and affecting work efficiency.

[0005] It can be seen that in existing rare earth electrolysis equipment, there is a conflict between the low cost advantage of iron-based materials and the requirements for metal purity. At the same time, the design of the cathode avoidance mechanism has not yet broken through the mindset of overall displacement, and there is an urgent need to develop a new type of electrolysis furnace system. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an electrolytic furnace system for rare earth metals.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an electrolytic furnace system for rare earth metals, comprising:

[0008] At least one electrolytic furnace device includes a furnace platform assembly with a built-in furnace cavity, a crucible assembly at the bottom of the furnace cavity, a cooling cavity built-in in the furnace platform assembly, a cooling liquid circulating in the cooling cavity, and a furnace cover assembly at the top of the furnace platform assembly, the furnace cover assembly communicating with the cooling cavity and forming a steam guiding cavity above the cooling cavity;

[0009] A crucible extraction device includes a multi-axis movable clamping assembly for gripping and placing crucible assemblies.

[0010] The cathode device includes a cathode body inserted into the furnace cavity, and a cathode frame and a cathode tilting assembly connected to the cathode body. The cathode tilting assembly actuates the cathode body and plans a tilting path through the center of the furnace cavity.

[0011] An anode device includes an anode assembly spaced apart from a furnace cover assembly, the anode assembly having a built-in circulation channel, and the anode assembly being arranged on a furnace platform assembly and extending into a furnace cavity. At least one anode assembly is provided with an avoidance notch located in a swing path, the avoidance notch being configured to at least partially accommodate a cathode body to release space within the furnace cavity corresponding to the direction of crucible projection.

[0012] The dust collection and recovery device includes two housing units covered on the cathode body, as well as an exhaust pipe and a housing opening and closing assembly connected to the housing body. The exhaust pipe is connected to the dust collection module. The housing units are spliced ​​together to form the housing body. The housing opening and closing assembly drives at least the housing unit near the crucible extraction device away from the action path of the clamping assembly and drives the housing units to open and close. In the closed state, the housing unit connects the exhaust pipe and the dust collection module to form an exhaust channel.

[0013] Furthermore, the cooling chamber is arranged around the outer periphery of the furnace cavity, and a flow guide ring pipe is provided inside the cooling chamber. The flow guide ring pipe is connected to an inlet and an outlet extending into the steam guiding chamber. The cooling chamber is connected to a circulation outlet, and the cooling chamber forms a heat conduction structure with the anode assembly through the furnace platform assembly. Through the above improvements, the flow guide ring pipe acts as a guide component for the coolant, allowing the fluid to flow into the steam guiding chamber, thereby cooling the furnace cover assembly and discharging steam.

[0014] Furthermore, the anode assembly includes an iron base and a copper contact plate mounted on the furnace platform assembly. A circulation channel is located within the iron base. The iron base connects the anode unit and the copper contact plate placed inside the furnace cavity. The copper contact plate is connected to the positive electrode copper busbar on the electrolytic furnace device.

[0015] Furthermore, the anode assembly extends radially along the furnace cavity onto the furnace platform assembly. A fixing component is provided between the iron base and the copper contact plate, and the projections of the iron base and the copper contact plate, as well as the projection of the fixing component, are at least partially located within the cooling cavity. Through these improvements, the anode assembly is fully cooled by the cooling cavity, and the conductive part of the anode assembly is divided into the iron base and the copper contact plate. On the one hand, material costs can be controlled, and on the other hand, the copper contact plate can control the current resistance.

[0016] Furthermore, the cathode frame includes a first frame and a second frame rotatably mounted on the first frame. The cover opening and closing assembly and the cover body are mounted on the second frame. The cathode body is mounted on the second frame. The cathode tilting assembly includes a tilting actuation unit disposed between the first frame and the second frame. The tilting actuation unit acts on the second frame and drives the cathode body to move along the tilting path. The bottom of the first frame is also connected to a cathode lifting assembly, which is configured to adjust the vertical distance between the cathode body and the crucible assembly. Through the above improvements, the tilting actuation unit actuates the second frame to rotate in coordination with the cathode body, so that the cathode body moves between the center of the furnace cavity or between the clearance gap to provide the operating space for the clamping assembly. As the cathode body is consumed, the cathode lifting assembly drives the first frame to lift in coordination with the cathode body to adjust the vertical distance between the cathode body and the crucible assembly.

[0017] Furthermore, the cover opening and closing assembly includes a base body, and the cover units are spaced apart to allow the ends of the cathode frame to be inserted.

[0018] The cover opening and closing assembly is mounted on the cathode frame and follows to the avoidance position, or the cover opening and closing assembly operates independently of the cathode yaw assembly to allow the cathode body to move along the yaw path. The evacuation pipe includes a movable segment connected to a cover unit, which connects or disconnects the evacuation passage upon actuation of the cover opening and closing assembly.

[0019] Furthermore, the cover opening and closing assembly includes an opening and closing drive unit, a first swing arm having a first rotating shaft, and a second swing arm having a second rotating shaft;

[0020] One end of the first swing arm is connected to the base body via the first rotating shaft, and the other end of the first swing arm is connected to the cover unit. A damping structure is provided on the first rotating shaft.

[0021] One end of the second swing arm is connected to the actuating end of the opening and closing drive unit via the second rotating shaft, or the second rotating shaft and the opening and closing drive unit are connected by an opening and closing transmission mechanism, and the other end of the second swing arm is connected to another housing unit.

[0022] The opening and closing drive unit actuates the second swing arm to move relative to the first swing arm in the horizontal direction via the second rotating shaft, and the moving segment follows the rotation of the second swing arm relative to the air extraction pipe.

[0023] Furthermore, the movable segment includes a middle part rotatably disposed on the base body, a cover connecting part and an air extraction connecting part disposed on the front and rear sides of the middle part, and the cover opening and closing assembly includes an opening and closing drive unit, which is connected to the middle part and actuates the movable segment to rotate, or is tractionally connected to the air extraction connecting part and actuates the movable segment to rotate. The movable segment is configured to rotate upward about a horizontal axis so that at least one cover unit moves away from the cathode body and leaves the assembled state, and another cover unit is provided with a parallelogram structure between it and the movable segment, and moves away from the cathode body along with the movable segment.

[0024] Furthermore, there are multiple electrolytic furnace units, each of which is connected to the main body of the casing and the dust removal module through an exhaust pipe. A crucible extraction device is provided between the multiple electrolytic furnace units and is located within the action path of the clamping assembly. The dust removal module includes a cyclone dust collector connected to multiple exhaust pipes. The cyclone dust collector is connected in sequence to a ventilation box and a bag filter. Multiple electrolytic furnaces share a set of crucible extraction and dust removal system, which effectively reduces equipment costs.

[0025] Furthermore, the electrolytic furnace device and the crucible extraction device are set on the same horizontal reference plane on the concrete base. The bottom of the crucible extraction device is provided with a first pre-embedded component, and the bottom of the electrolytic furnace device is provided with a second pre-embedded component. The first and second pre-embedded components are placed in the concrete base and define the horizontal reference plane.

[0026] The end of the electrolytic furnace device is equipped with a correction plate, which is located within the action path of the clamping assembly. The correction plate is equipped with correction points corresponding to the clamping assembly. The correction points are arranged with respect to the gripping or opening posture of the clamping unit. Through the above improvements, the clamping assembly and the electrolytic furnace device share the same horizontal reference plane through the embedded parts, so as to ensure the reliability of the crucible clamping action.

[0027] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0028] 1. During electrolysis, this invention provides a cooling chamber around the outer ring of the furnace cavity to fully dissipate heat from the furnace platform assembly, achieving overall cooling of the furnace platform assembly. The furnace cover assembly has a steam guiding chamber spaced out above the cooling chamber, and the furnace cover assembly and anode assembly are arranged together around the top of the furnace cavity and cover the furnace platform assembly. The steam in the cooling chamber can rise to the steam guiding chamber and be released and discharged by the newly introduced coolant. At the same time, each anode assembly is provided with a circulation channel independent of the cooling chamber, thereby achieving sufficient cooling of the furnace platform assembly. This allows for control of the temperature of the iron-based material during electrolysis, reduces the mixing of iron impurities in the crucible assembly, and improves the metal yield. In addition, thanks to the design of the avoidance gap and the split shell body, the shell body can cover the cathode body and be located close to the furnace opening, thereby improving the recovery rate of electrolytic flue gas and reducing energy waste. On the other hand, it also improves the exhaust effect to reduce the risk of impurities in the flue gas mixing into the crucible assembly.

[0029] 2. This invention, by setting an avoidance notch on the anode unit, allows the cathode deflection assembly to move the cathode body along a predetermined deflection path and into the avoidance notch when the crucible assembly needs to be transferred or placed. This ensures that the cathode body is completely positioned in the projection direction of the crucible assembly, thereby freeing up space for the stirring and crucible clamping components to enter and operate. Compared to the prior art, which requires the cathode body to be completely lifted vertically, this invention only requires a cathode deflection unit on the cathode frame. The cathode body can release vertical space by making a small deflection movement within the furnace cavity. Furthermore, a single-unit cover can be opened using the cover opening and closing assembly, simplifying the overall movement of the components when placing or removing the crucible assembly. When the cathode body needs to be replaced, another cover unit can be opened manually or by the cover opening and closing assembly for replacement, effectively shortening the movement and reducing the adjustment path and difficulty of the cathode body. At the same time, it simplifies the structure of the cathode moving device, improves the operational convenience and space utilization of the electrolytic furnace, and increases the efficiency of crucible assembly handling and transfer. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram showing the arrangement of the electrolytic furnace apparatus and the crucible extraction apparatus of the present invention;

[0032] Figure 3 This is a partially enlarged view of the anode assembly and cathode body of the present invention;

[0033] Figure 4 This is an exploded view of the furnace platform assembly of the present invention;

[0034] Figure 5 This is a cross-sectional view of the furnace platform assembly of the present invention;

[0035] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0036] Figure 7 This is a cross-sectional view of the cooling cavity of the present invention;

[0037] Figure 8 This is a cross-sectional view of the circulating flow channel of the present invention;

[0038] Figure 9 This is a schematic diagram of the electrolytic furnace and cathode device of the present invention;

[0039] Figure 10 This is a cross-sectional view of the electrolytic furnace of the present invention;

[0040] Figure 11 This is a cross-sectional view of the cathode body of the present invention in the electrolysis position;

[0041] Figure 12 This is a schematic diagram showing that the yaw actuator unit of the present invention operates linearly;

[0042] Figure 13 This is a schematic diagram of the structure of the second screw of the present invention;

[0043] Figure 14 This is a cross-sectional view of the rotating bearing assembly of the present invention;

[0044] Figure 15 This is a schematic diagram of the yaw actuator unit of the present invention performing a rotational action;

[0045] Figure 16 This is a schematic diagram of one embodiment of the cathode lifting assembly of the present invention;

[0046] Figure 17 This is an embodiment of the present invention in which the opening and closing drive unit is arranged vertically;

[0047] Figure 18 This is an embodiment of the present invention in which the opening and closing drive unit operates linearly;

[0048] Figure 19 This is a schematic diagram of the auxiliary guide wheel of the present invention;

[0049] Figure 20 This is a partial cross-sectional schematic diagram of the damping structure of the present invention;

[0050] Figure 21 This is a schematic diagram of the large-diameter and small-diameter portions of the present invention;

[0051] Figure 22 This is a schematic diagram of the structure of the main body of the cover of the present invention, which is tilted open.

[0052] Figure 23 This is a schematic diagram of the open state of the cover body of the present invention, which is tilted open.

[0053] Figure 24 for Figure 22 Enlarged view of point C in the middle;

[0054] Figure 25 This is a schematic diagram of the cover opening and closing assembly of the cover body of the present invention;

[0055] Figure 26 This is a schematic diagram of the internal structure of the cyclone dust collector of the present invention;

[0056] Figure 27 This is a schematic diagram showing the position of the calibration plate of the present invention;

[0057] Figure 28 for Figure 27 Enlarged view of point B in the middle;

[0058] Figure 29 This is an exploded view of the base assembly of the present invention;

[0059] Figure 30 This is a cross-sectional view of the first substrate and the first embedded part of the present invention;

[0060] Figure 31 This is a schematic diagram showing the arrangement of the second embedded part of the present invention;

[0061] Figure 32 for Figure 31 Enlarged view at point D;

[0062] Figure 33 This is a schematic diagram of the clamping assembly of the present invention;

[0063] Figure 34 This is an exploded view of the clamping assembly of the present invention;

[0064] Figure 35 This is a cross-sectional schematic diagram of the clamping assembly of the present invention;

[0065] In the picture:

[0066] 1. Electrolytic furnace equipment;

[0067] 1.1 Furnace cavity; 1.2 Furnace platform assembly; 1.21 Furnace platform plate; 1.22 Enclosure plate; 1.23 Gas passageway; 1.3 Cooling chamber; 1.31 Circulation outlet; 1.4 Furnace cover assembly; 1.41 Seat plate; 1.42 Cover plate; 1.5 Steam guiding chamber; 1.6 Flow guide ring pipe; 1.61 Liquid inlet; 1.62 Liquid outlet; 1.7 Support platform; 1.71 Support end plate; 1.8 Alignment plate; 1.81 Alignment point;

[0068] 2. Cathode body; 2.1. Copper busbar;

[0069] 3. Cathode frame; 3.1. First frame; 3.2. Second frame; 3.21. Second screw; 3.22. Slide groove; 3.23. Extension plate; 3.3. Third frame; 3.4. Frame body; 3.5. Adapter shaft; 3.6. Rotary bearing assembly;

[0070] 4. Cathode yaw assembly; 4.1. Yaw actuation unit; 4.11. Rotation actuation end; 4.12. Linear actuation end; 4.2. Support frame;

[0071] 5. Anode device; 5.1 Anode assembly; 5.11 Iron base; 5.12 Copper contact plate; 5.13 Anode unit; 5.2 Circulation channel; 5.21 Circulation inlet; 5.22 Circulation outlet; 5.3 Clearance notch; 5.4 Fixing components;

[0072] 6. Crucible assembly; 6.1 Large crucible; 6.2 Small crucible;

[0073] 7. Dust collection and recovery device; 7.1. Base body; 7.11. Support seat; 7.12. Rotating base; 7.13. Hinge shaft; 7.14. Rotating shaft;

[0074] 7.2 Main body of the enclosure; 7.21 Normally open enclosure; 7.22 Normally closed enclosure; 7.23 Evacuation enclosure; 7.24 Auxiliary enclosure;

[0075] 7.3. Evacuation pipe;

[0076] 7.31 Movable segment; 7.311 Splicing end; 7.312 Middle part; 7.313 Cover connection part; 7.314 Air extraction connection part; 7.315 Rotating connection seat;

[0077] 7.32. Adaptor section; 7.33. Large diameter section; 7.34. Small diameter section; 7.35. Sealing component; 7.36. First pipe section; 7.37. Second pipe section; 7.38. Suction section; 7.39. Sealing gasket;

[0078] 7.4 Dust removal module; 7.41 Cyclone dust collector; 7.42 Air box; 7.43 Bag filter box; 7.44 Cyclone tube; 7.45 Fan; 7.46 Inlet; 7.47 Outlet duct;

[0079] 8. Cover opening and closing assembly; 8.1. Opening and closing drive unit; 8.11. Coupling; 8.2. Tie rod; 8.21. Sleeve; 8.22. Support rod; 8.23. Waist-shaped hole; 8.3. Swing frame; 8.31. First pin; 8.32. Second pin; 8.4. Mounting base;

[0080] 8.5 First swing arm; 8.51 First rotating shaft; 8.52 First connecting seat; 8.6 Second swing arm; 8.61 Second rotating shaft; 8.62 Second connecting seat;

[0081] 8.7 Opening and closing transmission mechanism; 8.71 Mounting platform; 8.72 Rack; 8.73 Gear; 8.74 Dust cover; 8.75 Connecting block; 8.76 Guide wheel; 8.77 Auxiliary wheel; 8.8 Bushing; 8.81 Bearing;

[0082] 9. Cathode lifting assembly; 9.1. First screw; 9.11. First limiting block; 9.12. Second limiting block; 9.2. Screw sleeve; 9.21. Internal threaded part; 9.22. First axial limiting part; 9.23. Second axial limiting part; 9.24. Rotating sleeve part; 9.3. Outer sleeve; 9.31. Rotating pressure seat; 9.32. Mating seat; 9.33. Limiting groove;

[0083] 10. Damping structure; 10.1. Elastic element; 10.2. Damping sleeve; 10.3. Locking element;

[0084] 11. Crucible Extraction Device; 11.1. Clamping Assembly; 11.11. Clamping Arm; 11.12. Drive End; 11.13. Clamping End; 11.14. Drive Module; 11.15. Three-Jaw Chuck; 11.16. Transmission Rod; 11.17. Hinge Seat; 11.18. Dustproof Tray; 11.19. Clearance Hole; 11.2. Base Assembly; 11.21. Support Base; 11.22. Positioning Hole; 11.23. Positioning Plate; 11.24. Positioning Column; 11.3. Sealing Ring; 11.4. Sealing Cover; 11.5. Drive Component; 11.6. Transmission Component;

[0085] 12.1 Base layer; 12.2. First substrate; 12.3. Extension substrate; 12.4. Second substrate;

[0086] 13. First embedded component; 13.1. First embedded part; 13.2. Threaded part; 13.3. Nut;

[0087] 14. Second embedded component; 14.1 Second embedded part; 14.1 Main rod body; 14.2 Upper rod body; 14.3 Lower rod body; Detailed Implementation

[0088] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0089] It should be understood that although the terms upper, middle, lower, top, one end, etc., appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for ease of understanding, and are not used to define any directional or sequential restrictions.

[0090] like Figure 1-2 As shown, an electrolytic furnace system for rare earth metals includes:

[0091] At least one electrolytic furnace device 1 includes a furnace platform assembly 1.2, with a furnace chamber 1.1 extending through the center of the furnace platform assembly 1.2, and a crucible assembly 6 disposed at the bottom of the furnace chamber 1.1.

[0092] The furnace platform assembly 1.2 has a hollow structure and a built-in cooling chamber 1.3. Cooling liquid circulates in the cooling chamber 1.3. The cooling chamber 1.3 is connected to the bottom of the furnace platform assembly 1.2 by a circulating inlet 1.61 and a circulating outlet 1.31. The cooling chamber 1.3 fully cools the furnace platform assembly 1.2 and the anode assembly 5.1 on it, reducing the voltage and energy consumption of the anode assembly 5.1, while controlling the atmosphere temperature at the furnace opening and the furnace platform to reduce raw material loss. The furnace platform assembly 1.2 is equipped with a furnace cover assembly 1.4 on the upper part. The furnace cover assembly 1.4 is connected to the cooling chamber 1.3 and forms a steam guiding chamber 1.5 above the cooling chamber 1.3.

[0093] The crucible extraction device 11 includes a multi-axis movable clamping assembly 11.1. The clamping assembly 11.1 shares the same horizontal reference with the electrolytic furnace and corrects its posture through the electrolytic furnace. The clamping assembly 11.1 includes multiple clamping units that perform clamping actions, thereby gripping and placing the crucible assembly 6. The crucible extraction device 11 is located on one side of the electrolytic furnace device 1 and has at least one motion module that provides vertical lifting and rotation of the clamping assembly 11.1 and horizontal extension and retraction. The clamping assembly 11.1 and motion module applied to the crucible are conventional devices in the art and will not be described in detail here.

[0094] The cathode device includes a cathode body 2 inserted into a furnace cavity 1.1, a cathode frame 3 connected to the cathode body 2, and a cathode tilting assembly 4. The crucible assembly 6 is located at the middle of the bottom of the furnace cavity 1.1. Specifically, the cathode body 2 is a vertically arranged tungsten rod with a copper busbar 2.1 connected to it. The copper busbar 2.1 is located at the end of the cathode frame 3, which provides support and mounting position for the cathode body 2. The cathode tilting assembly 4 actuates the cathode body 2 and plans a tilting path through the center of the furnace cavity 1.1. The tilting path passes at least through the center of the furnace cavity 1.1, i.e., the working position of the cathode body 2, and the direction of the tilting path is set away from the working position of the cathode body 2, thereby freeing up space in the center of the furnace cavity 1.1. This allows the clamping assembly 11.1 to enter the furnace cavity 1.1 through the space cleared by the cathode body 2 when the crucible assembly 6 needs to be picked up, placed, or replaced, and to operate the crucible assembly 6.

[0095] The anode device 5 includes an anode assembly 5.1 spaced apart from the furnace cover assembly 1.4. One end of the anode assembly 5.1 extends into the furnace cavity 1.1, and the other end extends out of the furnace platform assembly 1.2 and is connected to the positive electrode copper busbar 2.1 of the electrolytic furnace device 1. The anode assembly 5.1 is arranged on the furnace platform assembly 1.2. At least one anode assembly 5.1 is provided with a clearance notch 5.3 located in the swing path. The clearance notch 5.3 is specifically provided at the end of the anode assembly 5.1 that extends into the furnace cavity 1.1. The clearance notch 5.3 is configured to at least partially accommodate the cathode body 2 to release space in the furnace cavity 1.1 corresponding to the projection direction of the crucible assembly 6 and allow the crucible clamping member to move in the furnace cavity 1.1.

[0096] The dust collection and recovery device 7 includes two housing units covered on the cathode body 2, and an exhaust pipe 7.3 and a housing opening and closing assembly 8 connected to the housing body 7.2. The exhaust pipe 7.3 is connected to the dust collection module 7.4. The housing units are spliced ​​together to form the housing body 7.2. The housing opening and closing assembly 8 is used to provide driving force to at least one housing unit, so that the housing units have spliced ​​state and separated state.

[0097] The cover opening and closing assembly 8 drives at least the cover unit close to the crucible extraction device 11 away from the action path of the clamping assembly 11.1, and drives the cover units to open and close to each other. Thus, when the clamping assembly 11.1 needs to perform pick-up and clamping operations on the crucible assembly 6, the cover unit has already left the action path of the clamping assembly 11.1, and the cathode body 2 is actuated by the deflection actuation unit to enter the avoidance gap 5.3.

[0098] When closed, the housing unit forms the housing body 7.2 and connects to the exhaust pipe 7.3 and the dust removal module 7.4 to form an exhaust channel.

[0099] It is worth mentioning that by splicing the cover units, preferably two cover units, and spacing between the cover units to allow the copper busbar 2.1 at the end of the cathode frame 3 to be inserted, the spliced ​​cover body 7.2 can cover the upper part of the cathode body 2 and be positioned directly opposite the furnace opening, thereby increasing the extraction efficiency of the flue gas from the furnace opening and improving the flue gas recovery efficiency. Thanks to the setting of the dust removal module 7.4, which includes at least a cyclone separator, the flue gas and dust are separated to reduce raw material waste.

[0100] (Anode assembly 5.1)

[0101] like Figure 3 and Figure 4As shown, as a further embodiment of the anode assembly 5.1, the anode assembly 5.1 includes an iron base 5.11 and a copper contact plate 5.12 disposed on the furnace platform assembly 1.2, and an anode unit 5.13 extending into the furnace cavity 1.1. The anode assembly 5.1 extends radially about the furnace cavity 1.1, and one end of the iron base 5.11 is connected to the anode unit 5.13, and the other end is connected to the copper contact plate 5.12. A fixing component 5.4 is provided between the iron base 5.11 and the copper contact plate 5.12. The copper contact plate 5.12 has a flange extending outside the furnace platform assembly 1.2, which is connected to the positive copper busbar 2.1 on the electrolytic furnace device 1. The anode unit 5.13 is preferably a graphite anode. The iron base 5.11 and the copper contact plate 5.12 are arranged overlapping each other, and the fixing component 5.4 is disposed between the overlapping portion of the two.

[0102] On the one hand, the iron base 5.11 can control material costs, while the copper contact plate has low resistance, which is conducive to reducing energy consumption. In addition, the copper contact plate is set as a plate, which has good thermal conductivity, so it can quickly dissipate heat through heat conduction with the cooling chamber 1.3 of the furnace platform assembly 1.2.

[0103] On the other hand, graphite, as a conductive and corrosion-resistant material, conducts heat to the iron base 5.11 due to electrolysis and resistance heating. If the temperature of the iron base 5.11 is too high, the risk of iron impurities being mixed in increases. Therefore, a circulation channel 5.2 is set in the iron base 5.11 to further control the temperature of the iron base 5.11 and reduce the consumption of iron elements during the electrolysis process.

[0104] Further reference Figure 8 As shown, specifically, the iron base 5.11 extends in an arc shape at one end near the furnace cavity 1.1, and multiple iron bases 5.11 surround each other. The circulation channel 5.2 includes multiple interconnected cooling channels, and the iron base 5.11 at the end away from the furnace cavity 1.1 is provided with a circulation inlet 5.21 and a circulation outlet 5.22. The circulation inlet 5.21 and circulation outlet 5.22 are used for the passage of coolant to effectively cool the iron base 5.11. Combined with the cooling cavity 1.3 in the furnace platform assembly 1.2, the anode assembly 5.1 conducts heat through the furnace platform assembly 1.2 and the cooling cavity 1.3, thereby further optimizing the temperature control effect of the anode assembly 5.1 and the furnace platform assembly 1.2, thereby suppressing the consumption of iron elements, reducing the electrolytic slag formed by iron elements in the electrolyte, and greatly alleviating the adhesion between the large molybdenum pot and the small molybdenum pot in the electrolytic furnace.

[0105] As a further improvement to the circulation channel 5.2, the end of the iron base 5.11 is provided with multiple holes for connecting the graphite anode, and the fixing component 5.4 is provided at the other end of the iron base 5.11. The circulation channel 5.2, which constitutes the cooling channel, is arranged around the aforementioned holes and fixing component 5.4, or the circulation channel 5.2 is close to the aforementioned holes and fixing component 5.4, thereby improving the cooling effect on the iron base 5.11 and slowing down the rate of electrochemical corrosion of iron.

[0106] As one way to configure the circulation channel 5.2, the circulation channel 5.2 within each iron base 5.11 can be independently configured, thus providing a circulation inlet 5.21 and a circulation outlet 5.22 on each iron base 5.11. The advantage of this method is that it facilitates the disassembly of a single anode assembly 5.1, and the independent circulation cooling of each iron base 5.11 results in a more uniform temperature for each iron base 5.11. As another way to configure the circulation channel 5.2, the circulation channels 5.2 of adjacent iron bases 5.11 are interconnected through pipe fittings. That is, only one iron base 5.11 needs to have a circulation inlet 5.21 and a circulation outlet 5.22. The advantage of this method is that it reduces the cost of configuring the circulation channels 5.2 between multiple iron bases 5.11.

[0107] As a further embodiment of the connection between the iron base 5.11 and the copper contact plate 5.12, the end face of the furnace platform assembly 1.2 is provided with a positioning groove for matching the contour of the copper contact plate 5.12, and the copper contact plate 5.12 is provided with mounting holes corresponding to the positioning groove. In this way, the thickness of the furnace platform assembly 1.2 can be reduced, and at least the heat conduction between the cooling cavity 1.3 and the copper contact plate 5.12 can be optimized. Preferably, the mounting holes are located outside the cooling cavity 1.3 to reduce the welding requirements of welding pins on the back of the furnace platform assembly 1.2 and optimize the manufacturing process of the furnace platform assembly 1.2.

[0108] Specifically, the fixing component 5.4 includes at least a fixing post that is vertically inserted between the iron base 5.11 and the copper contact plate 5.12. A sealing element is provided on the outer periphery of the fixing post to prevent the coolant in the cooling chamber 1.3 from leaking. The same fixing component 5.4 is set between the overlapping iron base 5.11 and the copper contact plate, thereby reducing the number of mounting holes for the anode component 5.1 on the furnace platform component 1.2, reducing production costs and assembly difficulty.

[0109] In this embodiment, the projections of the iron base 5.11 and the copper contact plate 5.12 are located in the cooling cavity 1.3, thereby further optimizing the cooling of the anode assembly 5.1 on the basis of the cooling of the circulating flow channel 5.2 in the iron base 5.11, while ensuring the cooling effect on the overall furnace platform assembly 1.2.

[0110] Furthermore, the projection of the fixing component 5.4 is at least partially located within the cooling cavity 1.3, or the fixing component 5.4 extends into the cooling cavity 1.3, thereby sufficiently cooling the junction between the iron base 5.11 and the copper contact plate 5.12, which is beneficial to the homogenization of the temperature field between the iron base 5.11 and the copper contact plate 5.12.

[0111] Further reference Figure 10 and Figure 11 As shown, for the graphite anode unit 5.13, the clearance notch 5.3 is specifically provided on the graphite anode unit 5.13 and the iron base 5.11. The outline of the clearance notch 5.3 matches the outline of the cathode body 2, preferably larger than the outline of the cathode body 2, and the clearance notch 5.3 extends from the surface of the furnace platform toward the crucible assembly 6. The clearance notch 5.3 can partially accommodate the cathode body 2 or completely accommodate the cathode body 2, as long as it provides space for the clamping assembly 11.1 to extend and operate. The clearance notch 5.3 can be formed on one graphite anode unit 5.13 or formed by two adjacent graphite anode units 5.13.

[0112] It should be noted that in some cases, an annular receiving space is formed between the inner diameter of the furnace cavity 1.1 and the outer contour of the crucible assembly 6. The cathode body 2 is moved closer to the inner diameter of the furnace cavity 1.1 and placed into the receiving space by the cathode tilting assembly 4. Those skilled in the art will understand that when the receiving space is large enough to accommodate the entire outer contour of the cathode body 2, the clamping assembly 11.1 can directly enter the furnace cavity 1.1 and pick up, place and transfer the crucible assembly 6, thus eliminating the need to provide an avoidance notch 5.3 on the anode device 5.

[0113] In actual operation, if the cathode body 2 is simply tilted into the aforementioned accommodating space, there are still limitations to the movement of the crucible clamping component within the furnace cavity 1.1. In addition, to ensure the electrolysis effect of rare earth, the distance between the anode unit 5.13 and the cathode body 2 is a core parameter affecting electrolysis efficiency, energy consumption, and product quality. Therefore, optimized distance control is usually set, which further constrains the space planning inside the furnace cavity 1.1. This means that it is necessary to set an avoidance gap 5.3 within the furnace cavity 1.1.

[0114] Further reference Figure 10The crucible assembly 6 includes a large crucible 6.1 and a small crucible 6.2. The small crucible 6.2 serves as a metal collector, while the large crucible 6.1 is used to collect slag formed by impurities in the electrolyte. The large crucible 6.1 is located at the bottom of the collection area, and the small crucible 6.2 is positioned on the end face of the large crucible 6.1. The end face of the large crucible 6.1 is concave in an arc shape, which reduces the contact area with the small crucible 6.2. At the same time, the arc-shaped gap between the large crucible 6.1 and the small crucible 6.2 can accommodate a certain amount of impurities, improving the purity of the electrolyzed metal and greatly alleviating the adhesion phenomenon of the crucible assembly 6. In addition, it makes it easier for employees to remove impurities from the end face of the large crucible 6.1.

[0115] (Furnace assembly 1.2 - Cooling chamber 1.3)

[0116] Reference Figures 4 to 7 As shown, as a further embodiment of the cooling chamber 1.3, the furnace platform assembly 1.2 includes a furnace platform plate 1.21 located on the upper end face, and a surrounding plate 1.22 surrounding the bottom of the furnace platform plate 1.21. The multiple surrounding plates 1.22 form a U-shaped cross section and are spliced ​​with the furnace platform plate 1.21 to form an annular cooling chamber 1.3.

[0117] like Figure 4 As shown, as a further explanation of the steam guiding chamber 1.5, the furnace platform assembly 1.2 is provided with spaced-apart air passages 1.23, and each air passage 1.23 is covered by a furnace cover assembly 1.4. The air passages 1.23 are located between two adjacent anode assemblies 5.1, and the furnace cover assembly 1.4 is close to or in contact with the side of the anode assembly 5.1, specifically located on the side of the iron base 5.11, so that the furnace cover assembly 1.4 and the anode assembly 5.1 cover the outer surface of the furnace platform assembly 1.2 located in the furnace cavity 1.1.

[0118] The aforementioned air passage 1.23 is used to allow steam in the cooling chamber 1.3 to rise and be output. The steam originates from the evaporation of fluid in the cooling chamber 1.3 after heating. The air passage 1.23 is preferably arranged in an arc shape to increase its coverage area on the furnace assembly 1.2.

[0119] like Figure 6As shown, furthermore, the furnace cover assembly 1.4 communicates with the cooling chamber 1.3 and forms a steam guiding chamber 1.5 above the cooling chamber 1.3. That is, the steam guiding chamber 1.5 is located above the cooling chamber 1.3 and communicates with the cooling chamber 1.3. The furnace cover assembly 1.4 specifically includes a seat plate 1.41 disposed on the outer periphery of the end face of the gas passage 1.23. A cover plate 1.42 is provided on the upper part of the seat plate 1.41. The seat plate 1.41 and the cover plate 1.42 together form the steam guiding chamber 1.5, and the steam... The guiding cavity 1.5 extends radially toward the center of the furnace cavity 1.1 to the outer edge of the furnace cavity 1.1, and the edge of the seat plate 1.41 is close to or in contact with the iron seat 5.11. The coolant in the cooling cavity 1.3 can enter the steam guiding cavity 1.5, thereby fully cooling the furnace cover assembly 1.4 and venting the steam in the cavity. At the same time, the furnace cover assembly 1.4 cools the adjacent iron seat 5.11, further optimizing the temperature control effect of the anode assembly 5.1.

[0120] like Figure 7 As shown, specifically, the cooling chamber 1.3 is arranged around the outer periphery of the furnace chamber 1.1, and a guide ring pipe 1.6 is provided inside the cooling chamber 1.3. The guide ring pipe 1.6 is connected to an inlet pipe and an outlet pipe. The cooling chamber 1.3 is connected to a circulation output pipe. The inlet pipe passes through the surrounding plate 1.22 from the outside of the cooling chamber 1.3 and communicates with the guide ring pipe 1.6 to input coolant. The outlet pipe is connected to the inner wall of the guide ring pipe 1.6 and extends upward to the steam guiding chamber 1.5. The cooling chamber 1.3 forms a heat conduction with the anode assembly 5.1 through the furnace platform assembly 1.2. The outlet pipe is preferably inclined towards the furnace cover assembly 1.4 so that the coolant can reach the steam guiding chamber 1.5 and extend towards the center of the furnace chamber 1.1. The circulation output pipe is connected to the outer wall of the surrounding plate 1.22 of the cooling chamber 1.3.

[0121] The inlet pipe forms the inlet 1.61 of the cooling chamber 1.3, the outlet pipe forms the outlet 1.62 of the guide ring pipe 1.6, and the circulation outlet pipe forms the circulation outlet 1.31 of the cooling chamber 1.3.

[0122] During electrolysis, the coolant is first introduced into the flow ring pipe 1.6 through the inlet pipe. The incoming coolant circulates in the flow ring pipe 1.6 and is output from the outlet pipe to the steam guiding chamber 1.5. The coolant directly washes over the cover plate 1.42 and the seat plate 1.41 of the furnace cover assembly 1.4. While carrying out the steam in the cooling chamber 1.3, it cools the furnace cover assembly 1.4 and the iron seat 5.11 on both sides of the furnace cover assembly 1.4, and indirectly cools the furnace platform assembly 1.2. The coolant flowing through the steam guiding chamber 1.5 flows back down into the cooling chamber 1.3, then circulates in the cooling chamber 1.3 and cools the furnace cover assembly 1.4 and the anode assembly 5.1, and is finally output from the circulation outlet pipe.

[0123] It is worth mentioning that when the pre-cooled coolant enters the cooling chamber 1.3 and circulates, the post-cooled coolant circulates in the guide ring pipe 1.6 through the inlet pipe, thereby playing a certain role in cooling the pre-cooled coolant circulating in the cooling chamber 1.3.

[0124] Preferably, the flow guide ring 1.6 is in contact with the bottom of the furnace plate 1.21 to play a role in heat conduction.

[0125] Thus, through the cooling chamber 1.3 and the steam guiding chamber 1.5 in this embodiment, the steam naturally rises and is guided to the steam guiding chamber 1.5. The incoming coolant first enters the steam guiding chamber 1.5, carrying away the steam and ensuring the cooling effect on the furnace cover assembly 1.4. Subsequently, the coolant flows back to the cooling chamber 1.3 to cool the furnace platform assembly 1.2 over a large area. In conjunction with the circulation channel 5.2 on the anode assembly 5.1, the heat management of the furnace platform assembly 1.2 is optimized, enabling sufficient cooling on the furnace platform assembly 1.2, effectively reducing the generation and mixing of iron impurities, and improving the temperature uniformity of the outer periphery of the furnace cavity 1.1.

[0126] The coolant mentioned above can be water or other liquids with good heat absorption properties.

[0127] (Cathode frame 3)

[0128] Reference Figure 12 As shown, as a further embodiment of the cathode frame 3, the cathode frame 3 includes a first frame 3.1 and a second frame 3.2 rotatably mounted on the first frame 3.1. The first frame 3.1 is configured as a supporting part, and the second frame 3.2 is configured as a rotating part. The cathode body 2 is mounted on the second frame 3.2, and the cathode yaw assembly 4 is mounted between the first frame 3.1 and the second frame 3.2. The cathode yaw assembly 4 includes at least a yaw actuation unit 4.1 for providing yaw actuation force. The actuating end of the yaw actuation unit 4.1 is mounted on the second frame 3.2. The upper part of the second frame 3.2 is also provided with a frame 3.4. A copper busbar 2.1 is horizontally inserted inside the frame 3.4, and the cathode body 2 is vertically connected to one end of the copper busbar 2.1 that extends out of the frame 3.4. The top of the frame 3.4 forms a mounting plane, which is used for the fixed connection of the base body 7.1 of the cover opening and closing assembly 8.

[0129] During the electrolysis process, it is necessary to adjust the distance between the bottom of the cathode body 2 and the open end of the crucible assembly 6 to avoid the distance between the cathode body 2 and the crucible assembly 6 becoming too large after the cathode body 2 is consumed, which would affect the electrolysis effect and metal collection efficiency. For this purpose, the cathode frame 3 is connected to a cathode lifting assembly 9, which is preferably located at the bottom of the first frame 3.1 to drive the entire cathode frame 3 and cathode body 2 to perform lifting and adjusting actions.

[0130] In some cases, it is necessary to make a linear adjustment in the horizontal direction to the center position of the opening of the cathode body 2, the crucible assembly 6, and the furnace cavity 1.1, such as... Figure 13 As shown, a third frame 3.3 is slidably mounted on the second frame 3.2. A second screw 3.21 is provided between the second frame 3.2 and the third frame 3.3, arranged radially along the cathode body 2. The copper busbar 2.1 extends linearly about the radial direction of the cathode body 2. The frame 3.4 is fixedly mounted on the third frame 3.3. One end of the second screw 3.21 is connected to the second frame 3.2, and the other end is mounted on the third frame 3.3. A sliding groove 3.22 is provided between the second frame 3.2 and the third frame 3.3, arranged along the second screw 3.21. The second screw 3.21 and the sliding groove 3.22 are arranged in the same direction, and the sliding groove 3.22 is arranged in the same direction as the copper busbar 2.1. The cathode frame 3 has multiple sliding grooves 3.22, which are evenly distributed about the rotation axis of the cathode frame 3. Preferably, the sliding grooves 3.22 are set on the third frame 3.3, and bolts corresponding to the sliding grooves 3.22 are set on the second frame 3.2. During operation, the linear position between the third frame 3.3 and the second frame 3.2 is adjusted by rotating the second screw 3.21, thereby controlling the linear position of the frame 3.4 and the cathode body 2 on it. After the adjustment is completed, the bolts on the sliding grooves 3.22 are locked to fix the second frame 3.2 and the third frame 3.3. In this way, the space occupied by the linear movement mechanism of the cathode frame 3 can be effectively reduced.

[0131] (Cathode yaw assembly 4)

[0132] As a further embodiment of the cathode yaw assembly 4, the yaw actuation unit 4.1 is configured as a linear actuation end 4.12 or a rotational actuation end 4.11, and the linear actuation end 4.12 of the yaw actuation unit 4.1 is rotatably mounted on the second frame 3.2, while the rotational actuation end 4.11 of the yaw actuation unit 4.1 is fixedly connected to the second frame 3.2.

[0133] Further reference Figures 12 to 16 As shown, when the yaw actuator 4.1 is selected as a linearly actuating element, its main body is rotatably mounted on the first frame 3.1, and its linear actuating end 4.12 is rotatably mounted on the second frame 3.2; when the yaw actuator 4.1 is selected as a rotating actuating element, the lower end of its main body is fixedly mounted on the first frame 3.1, and its rotating actuating end 4.11 is fixedly connected to the second frame 3.2, thereby implementing the rotation of the cathode frame 3, thereby driving the cathode body 2 to move between the electrolysis position above the crucible and the clearance notch 5.3.

[0134] From the perspective of the power source of the yaw actuator 4.1, the yaw actuator 4.1 can be set as a pneumatic component or an electric component. When the yaw actuator 4.1 is selected as a pneumatic component, it is preferably a linear telescopic cylinder. When the yaw actuator 4.1 is selected as an electric component, it is preferably a reducer equipped with a motor, and further selected as a worm gear reducer or a worm rotary drive.

[0135] like Figures 12 to 14 As shown, based on the yaw actuator unit 4.1 being a linear actuating end 4.12, the main body of the yaw actuator unit 4.1 is further rotatably mounted on the first frame 3.1. A connecting shaft 3.5 and a rotating bearing assembly 3.6 are provided between the first frame 3.1 and the second frame 3.2. A support frame 4.2 is located outside the rotation axis of the first frame 3.1 and the second frame 3.2. Specifically, the support frame 4.2 is L-shaped and mounted on the first frame 3.1. A connecting lug is provided on the support frame 4.2, and the main body of the yaw actuator unit 4.1 is rotatably mounted on the connecting lug. An extension plate 12.3 is provided on the second frame 3.2 towards the linear actuating end 4.12 of the yaw actuator unit 4.1. The linear actuating end 4.12 of the yaw actuator unit 4.1 is rotatably mounted on the extension plate 3.23. Of course, the yaw actuator unit 4.1 can also be selected as an electrically powered linear actuating unit, such as a linear electric cylinder.

[0136] like Figure 15 As shown, based on the yaw actuation unit 4.1 being the rotating action end 4.11, taking the worm gear rotary actuator as an example, it is set between the height space of the first frame 3.1 and the second frame 3.2. The bottom of the worm gear rotary actuator is fixedly connected to the first frame 3.1, and the rotating action end of the worm gear rotary actuator is fixedly connected to the second frame 3.2, thereby ensuring the stability of the operation of the cathode body 2 and the cathode frame 3.

[0137] (Cathode lifting assembly 9)

[0138] Further reference Figure 16 As shown, in one embodiment of the cathode lifting assembly 9, the cathode lifting assembly 9 includes a vertically arranged outer sleeve 9.3, a first screw 9.1, and a screw sleeve 9.2 rotatably disposed on the outer sleeve 9.3. The first screw 9.1 is fixedly connected to the cathode frame 3, specifically fixed to the lower end of the first frame 3.1. The outer sleeve 9.3 and the screw sleeve 9.2 are both sleeved outside the first screw 9.1. The screw sleeve 9.2 is axially constrained to rotate on the outer sleeve 9.3. The first screw 9.1 and the screw sleeve 9.2 are threadedly engaged. The rotation of the screw sleeve 9.2 drives the first screw 9.1 to rise and fall relative to the outer sleeve 9.3 and the screw sleeve 9.2. The height position of the first frame 3.1 is achieved by rotating the screw sleeve 9.2, thereby driving the height position of the cathode frame 3 and the cathode body 2.

[0139] The sleeve 9.3 is provided with a rotating pressure seat 9.31. The lower section of the threaded sleeve 9.2 is provided with a rotating sleeve portion 9.24 extending between the sleeve 9.3 and the first screw 9.1. The upper section of the threaded sleeve 9.2 is provided with an internal thread portion 9.21 for engaging with the first screw 9.1. The middle section of the threaded sleeve 9.2 is provided with a radially protruding first axial limiting portion 9.22 and a relatively concave second axial limiting portion 9.23. The rotating pressure seat 9.31 has a mating seat 9.32 for accommodating the first axial limiting portion 9.22 and the second axial limiting portion 9.23. Thus, the axial position of the threaded sleeve 9.2 on the sleeve 9.3 is limited by the rotating pressure seat 9.31, and the threaded sleeve 9.2 is only allowed to rotate at the end of the sleeve 9.3, that is, the first axial limiting portion 9.22 and the second axial limiting portion 9.23 rotate within the mating seat 9.32.

[0140] Furthermore, a vertically extending limiting groove 9.33 is provided at the bottom of the outer sleeve 9.3, and a first limiting block 9.11 is provided at the bottom of the first screw 9.1. A second limiting block 9.12 is bolted to the first limiting block 9.11. The second limiting block 9.12 is located outside the limiting groove 9.33 and extends on both sides of the limiting groove 9.33. The second limiting block 9.12 is fastened to the first limiting block 9.11 by bolts, and the second limiting block 9.12 abuts against the outer wall surface of the outer sleeve 9.3 to further ensure the stability of the height position of the first screw 9.1. At the same time, the cooperation between the second limiting block 9.12 and the limiting groove 9.33 further constrains the lifting stroke of the first screw 9.1, thus intuitively showing the lifting distance between the first screw 9.1 and the cathode body 2.

[0141] (Main body of the cover 7.2 and cover opening and closing assembly 8)

[0142] As a further explanation of the cover opening and closing assembly 8, the cover opening and closing assembly 8 includes a base body 7.1, and the cover units are spaced apart to allow the end of the cathode frame 3 to be inserted.

[0143] The cover opening and closing assembly 8 is mounted on the cathode frame 3 and follows to the avoidance position, or the cover opening and closing assembly 8 operates independently of the cathode yaw assembly 4 to allow the cathode body 2 to move along the yaw path. The evacuation pipe 7.3 includes a movable segment 7.31 connected to a cover unit, which connects or disconnects the evacuation passage with the actuation of the cover opening and closing assembly 8.

[0144] Whether the cover opening and closing assembly 8 rotates with the cathode tilting assembly 4 or rotates independently of the cathode tilting assembly 4, the cover unit preferably maintains the position in the splicing state and moves relative to the cathode body 2 in a rotating manner, so as to maintain the splicing position when switching from the separated state to the splicing state. The rotation axis of the cover unit can be a horizontal axis or a vertical axis.

[0145] (Main body of the casing 7.2 - horizontal swing)

[0146] like Figure 12 ,as well as Figures 17 to 18 As shown, as one embodiment of the cover opening and closing assembly 8, the cover opening and closing assembly 8 includes an opening and closing drive unit 8.1, a first swing arm 8.5 having a first rotating shaft 8.51, and a second swing arm 8.6 having a second rotating shaft 8.61.

[0147] One end of the first swing arm 8.5 is connected to the base body 7.1 via the first rotating shaft 8.51, and the other end of the first swing arm 8.5 is connected to the cover unit. A damping structure 10 is provided on the first rotating shaft 8.51.

[0148] One end of the second swing arm 8.6 is connected to the actuating end of the opening and closing drive unit 8.1 via the second rotating shaft 8.61, or the second rotating shaft 8.61 and the opening and closing drive unit 8.1 are connected by an opening and closing transmission mechanism 8.7, and the other end of the second swing arm 8.6 is connected to another housing unit;

[0149] The opening and closing drive unit 8.1 actuates the second swing arm 8.6 in the horizontal direction relative to the first swing arm 8.5 via the second rotating shaft 8.61, and the movable segment 7.31 follows the second swing arm 8.6 to rotate relative to the air extraction pipe 7.3.

[0150] like Figure 18 As shown, specifically, the cover opening and closing assembly 8 is integrated on the frame 3.4 of the second frame 3.2, so that the cover opening and closing assembly 8 moves synchronously with the second frame 3.2. The base body 7.1 is fixedly set on the top of the frame 3.4. When it is necessary to pick up, put down and transfer the crucible assembly 6, the yaw actuation unit 4.1 is activated first, moving the cathode body 2 and the cover opening and closing assembly 8 to the avoidance position synchronously, and then the cover opening and closing assembly 8 is activated.

[0151] The number of housing units is two, and the two housing units are located near the center of the cathode body 2, forming a matching splicing surface in the longitudinal direction.

[0152] One of the housing units is located on the side close to the crucible clamping member. Depending on the operation, this housing unit is defined as normally open housing 7.21, and the other housing unit is positioned as normally closed housing 7.22. The normally open housing 7.21 is used to operate when the crucible assembly 6 needs to be picked up or put down, while the normally closed housing 7.22 on the other side does not interfere with the transfer path of the crucible assembly 6, so it can be set to be manually driven. It is only manually operated when the cathode body 2 needs to be replaced, and rotates away from the cathode body 2.

[0153] Preferably, the proportion of the normally open cover 7.21 in the main body of the cover 7.2 is increased. In other words, the proportion of the main body of the cover 7.2 formed by the normally open cover 7.21 is greater than that of the normally closed cover 7.22. Thus, for the normally open cover 7.21, which operates more frequently, the relative opening of the normally open cover 7.21 can further release the vertical operating space above the opening of the furnace cavity 1.1. The normally open cover 7.21 is set to be directly or indirectly braked by the opening and closing drive unit 8.1 to improve automation and reduce the safety risks of manual operation.

[0154] Further reference Figure 12 Based on this, the movable segment 7.31 of the evacuation pipe 7.3 is connected to the normally closed cover 7.22. Thus, when the normally open cover 7.21 is opened and closed according to the crucible assembly 6, the movable segment 7.31 does not need to follow the movement and separate from the evacuation pipe 7.3. When the cathode body 2 needs to be replaced, the normally closed cover 7.22 can be manually opened to further release the space around the cathode body 2.

[0155] from Figure 12 As can be seen, as one embodiment of the first swing arm 8.5 and the base body 7.1, an L-shaped first connecting seat 8.52 is provided on one side of the base body 7.1, and the first rotating shaft 8.51 is vertically arranged on the first connecting seat 8.52. At this time, the first swing arm 8.5 swings in the horizontal direction.

[0156] Further reference Figure 17 and Figure 18 As shown, in one embodiment where the second swing arm 8.6 is connected to the base body 7.1, one end of the second swing arm 8.6 is connected to the actuating end of the opening and closing drive unit 8.1 via a second rotating shaft 8.61, and a second connecting seat 8.62 is provided on the other side of the base body 7.1. The opening and closing drive unit 8.1 is fixed on the second connecting seat 8.62, and the second rotating shaft 8.61 is vertically connected to the second connecting seat 8.62. At this time, the second swing arm 8.6 swings in the horizontal direction.

[0157] Optionally, the opening and closing drive unit 8.1 is selected as an electric motor that provides rotational torque. The output shaft of the opening and closing drive unit 8.1 is coaxial with the second rotating shaft 8.61, that is, the opening and closing drive unit 8.1 directly drives the second rotating shaft 8.61 to rotate, thereby causing the second swing arm 8.6 to rotate.

[0158] As shown in Figure 18, in another embodiment where the second swing arm 8.6 is connected to the base body 7.1, the second rotating shaft 8.61 is connected to the opening and closing drive unit 8.1 by an opening and closing transmission mechanism 8.7. The opening and closing drive unit 8.1 is configured as a linearly moving electric cylinder or pneumatic cylinder. The base body 7.1 has a mounting platform 8.71 on the side away from the first connecting seat 8.52. The mounting platform 8.71 extends in the horizontal direction, and the opening and closing drive unit 8.1 is mounted on the mounting platform 8.71.

[0159] The opening and closing transmission mechanism 8.7 includes a rack 8.72 and a gear 8.73. The rack 8.72 is connected to the power output end of the opening and closing drive unit 8.1. The rack 8.72 is slidably mounted on the base body 7.1. The gear 8.73 is coaxially fixed on the second rotating shaft 8.61. The rack 8.72 and the gear 8.73 mesh.

[0160] The mounting platform 8.71 is covered with a dust cover 8.74. The second rotating shaft 8.61 is rotatably mounted on the mounting platform 8.71. A receiving cavity is formed between the dust cover 8.74 and the mounting platform 8.71. The rack 8.72 and the gear 8.73 are built into the receiving cavity. The dust cover 8.74 prevents dust and oil stains from falling between the rack 8.72 and the gear 8.73, which could cause the rack 8.72 and the gear 8.73 to jam during meshing.

[0161] The second rotating shaft 8.61 is arranged parallel to the height direction of the base body 7.1, and the rack 8.72 is slidably arranged horizontally along the mounting platform 8.71. The sliding direction of the rack 8.72 is perpendicular to the axial direction of the second rotating shaft 8.61, so that the horizontal driving force of the rack 8.72 is converted into the vertical axial rotational force after being transmitted by the gear 8.73, thereby driving the second rotating shaft 8.61 to rotate in the vertical axial direction. At this time, the second rotating shaft 8.61 drives the second swing arm 8.6 and the normally open cover 7.21 to perform opening and closing actions. Compared with the method of setting a vertical motor to directly drive the second rotating shaft 8.61, this embodiment reduces the vertical space occupation of the opening and closing transmission mechanism 8.7 to a certain extent.

[0162] The power output end of the opening and closing drive unit 8.1 is provided with a connecting block 8.75. The end of the rack 8.72 near the opening and closing drive unit 8.1 is oscillatingly connected to the connecting block 8.75 via a pin shaft, so that the translation direction of the rack 8.72 can be slightly modified according to the usage environment, ensuring that the meshing transmission between the rack 8.72 and the gear 8.73 is more stable.

[0163] A bushing 8.8 is fixed on the mounting platform 8.71. Several bearings 8.81 are provided on the outside of the second rotating shaft 8.61. The second rotating shaft 8.61 is rotatably mounted in the bushing 8.8 through the bearings 8.81, thereby improving the smoothness of the rotation of the second rotating shaft 8.61 in the bushing 8.8.

[0164] Reference Figure 19 As shown, the rack 8.72 is slidably mounted on the mounting platform 8.71 via a guide structure. The guide structure includes several guide wheels 8.76 rotatably mounted on the mounting platform 8.71. The guide wheels 8.76 are arranged opposite to each other on both sides of the rack 8.72, and the outer rings of the guide wheels 8.76 roll in cooperation with the outer wall of the rack 8.72. The guide structure also includes an auxiliary wheel 8.77 mounted on the mounting platform 8.71. The auxiliary wheel 8.77 is rotatably mounted on the side of the rack 8.72 away from the gear 8.73, thereby providing support for the upper and lower sides and the back of the rack 8.72, thus ensuring the stability and reliability of the normally open cover 7.21.

[0165] In the embodiment of the second swing arm 8.6 moving horizontally, the first pivot 8.51 and the second pivot 8.61 are arranged parallel to each other along the height direction of the base body 7.1. The length extension direction of the first swing arm 8.5 and the second swing arm 8.6 is perpendicular to the axis direction of the pivot 7.14. That is, the first swing arm 8.5 and the second swing arm 8.6 rotate relative to each other on the horizontal plane. It should be noted that there is no limit to the maximum opening angle of the first swing arm 8.5 and the second swing arm 8.6. The first swing arm 8.5 and the second swing arm 8.6 can rotate in opposite directions through the first pivot 8.51 and the second pivot 8.61 to a posture that tends to be parallel to the copper busbar 2.1.

[0166] Furthermore, the normally open cover 7.21 is fixed on the second swing arm 8.6, and the normally closed cover 7.22 is fixed on the first swing arm 8.5, so the cover unit does not change its own posture during rotation.

[0167] (Evacuation tube 7.3 - horizontal swing)

[0168] Further reference Figure 12 As shown, in the embodiment of the second swing arm 8.6 horizontal movement described above, the air extraction direction of the air extraction channel is parallel to the axial direction of the rotating shaft 7.14, so that the swing arm can drive the cover to swing in the horizontal direction, so that the cover can be horizontally flipped to the open or closed state relative to the other side of the cover.

[0169] The movable segment 7.31 refers to the first pipe segment 7.36 integrally connected to the normally closed housing 7.22, and the second pipe segment 7.37 supported on the base body 7.1. The base body 7.1 is provided with a support seat 7.11 facing the second pipe segment 7.37. The support seat 7.11 is U-shaped and located at the bottom of the second pipe segment 7.37.

[0170] The first pipe segment 7.36 may be integrally connected with the normally closed housing 7.22, and the first pipe segment 7.36 and the second pipe segment 7.37 have a splicing end 7.311. Preferably, the two splicing ends 7.311 are provided with sealing rings, so as to ensure the sealing between the splicing ends 7.311 when the housing units are spliced ​​together. Preferably, the splicing ends 7.311 are set at an inclination, so that when the housing units return to the spliced ​​state, the splicing ends 7.311 can withstand the horizontal force.

[0171] Further reference Figure 21 As shown, in the embodiment of the horizontal movement of the second swing arm 8.6 described above, the exhaust pipe 7.3 further includes an adapter segment 7.32. The adapter segment 7.32 includes a large-diameter portion 7.33 and a small-diameter portion 7.34 constituting the exhaust pipe 7.3. The small-diameter portion 7.34 and the large-diameter portion 7.33 are rotatably fitted together and slide against each other as the cathode frame 3 moves up and down. A sealing member 7.35 is provided between the small-diameter portion 7.34 and the large-diameter portion 7.33.

[0172] The large-diameter section 7.33 is connected to the upper end of the second pipe section 7.37. The suction pipe 7.3 also includes a suction section 7.38 inserted in the large-diameter section 7.33. The lower end of the suction section 7.38 is connected to the small-diameter section 7.34. Both the small-diameter section 7.34 and the large-diameter section 7.33 are pipe sections. The sealing member 7.35 is specifically set at the open end of the large-diameter section 7.33. Through the mutual interlocking of the two, the second pipe section 7.37 can rotate relative to the suction section 7.38 as the second frame 3.2 swings. A vertical gap is reserved between the small-diameter section 7.34 and the large-diameter section 7.33. This vertical gap is used to allow the small-diameter section 7.34 and the large-diameter section 7.33 to slide relative to each other when adjusting the vertical height of the cathode body 2.

[0173] Preferably, the clearance notch 5.3 is located on the side of the yaw path closer to the normally closed housing 7.22.

[0174] When the crucible assembly 6 needs to be picked up or put down, the yaw actuation unit 4.1 is activated, and the second tube section 7.37 swings with the second frame 3.2 due to the U-shaped support of the support seat 7.11. The first tube section 7.36 swings with the synchronous movement of the first swing arm 8.5 and the second frame 3.2. After the cathode body 2 is inserted into the clearance notch 5.3, the cover opening and closing assembly 8 drives the normally open cover 7.21 to open.

[0175] When it is necessary to replace the cathode body 2, the first swing arm 8.5 is manually opened to fully open the cover units on both sides of the cathode body 2, thereby freeing up the operating space for replacing the cathode body 2.

[0176] (Damping structure 10)

[0177] like Figure 20 As shown, the damping structure 10 provides a position holding force for the first swing arm 8.5. On one hand, the damping structure 10 keeps the first swing arm 8.5 and the normally closed cover 7.22 in the spliced ​​position to ensure the stability of the spliced ​​cover body 7.2 and prevent the first swing arm 8.5 from deflecting due to the gravity of the normally closed cover at the end. On the other hand, the damping structure 10 provides the operator with a feel for operation and prevents the first swing arm 8.5 from rotating too fast and causing safety hazards. At the same time, the resistance provided by the damping structure 10 on the first rotating shaft 8.51 can enable the first swing arm 8.5 to be suspended at any rotation angle.

[0178] Specifically, the damping structure 10 includes an elastic element 10.1, a damping sleeve 10.2, and a locking element 10.3. The damping sleeve 10.2 is fitted onto the first rotating shaft 8.51 to prevent rotation. The first swing arm 8.5 has a rotating hole corresponding to the first rotating shaft 8.51. One end of the first swing arm 8.5 is rotatably connected to the outside of the first rotating shaft 8.51 through the rotating hole. The elastic element 10.1 drives the damping sleeve 10.2 to press against the first swing arm 8.5 and engage with it in a damping manner. The locking element 10.3 is locked onto the first rotating shaft 8.51 and used to adjust the elastic force of the elastic element 10.1.

[0179] The damping sleeve 10.2 is elastically pressed against the swing arm by the elastic force of the elastic element 10.1. When the cover rotates, it drives the swing arm to rotate synchronously. When the swing arm rotates to a predetermined angle, the static friction between the damping sleeve 10.2 and the swing arm can be used to make the swing arm hover at any rotation angle. The other side of the cover is fixed with a swing arm. The end of the swing arm away from the cover is fixed with a rotating shaft 7.14. The cover opening and closing assembly 8 drives the swing arm to rotate in the horizontal direction through the rotating shaft 7.14, so that the cover opens and closes relative to the other side of the cover. This allows the cover opening and closing assembly 8 to drive the swing arm to move the cover away from the other side of the cover in the horizontal direction to the open state. This is mainly for use scenarios where the height is limited.

[0180] In this embodiment, there are two damping sleeves 10.2. One damping sleeve 10.2 is located between the swing arm and the elastic member 10.1, and the other damping sleeve 10.2 is located between the swing arm and the locking member 10.3. Through the damping cooperation of multiple damping sleeves 10.2, the double-sided positioning of the upper and lower ends of the swing arm is achieved, thereby improving the positioning capability of the swing arm.

[0181] In this embodiment, the elastic element 10.1 is a butterfly spring, which elastically abuts against the base body 7.1 and the corresponding damping sleeve 10.2. The locking element 10.3 is a locking nut 13.3, which is threadedly connected to the rotating shaft 7.14. The operator can adjust the elastic compression of the butterfly spring by turning the locking nut 13.3 in the forward or reverse direction, thereby adjusting the frictional resistance between the damping sleeve 10.2 and the swing arm.

[0182] The side wall of the rotating shaft 7.14 is provided with a snap-fit ​​surface, and the inner wall of the damping sleeve 10.2 is provided with a locking part corresponding to the snap-fit ​​surface. The snap-fit ​​surface and the locking part are locked together and prevent rotation. By using the snap-fit ​​positioning of the snap-fit ​​surface and the locking part, the damping sleeve 10.2 is fixed on the rotating shaft 7.14 to prevent rotation, effectively preventing the damping sleeve 10.2 from rotating relative to the rotating shaft 7.14.

[0183] A rotating cylinder is fixed to the swing arm corresponding to the rotating shaft 7.14. A rotating hole is opened on the rotating cylinder. The end of the rotating cylinder facing the damping sleeve 10.2 is provided with a friction-fitting protrusion. The rotating cylinder engages with the damping sleeve 10.2 through the friction-fitting protrusion. In this embodiment, both the damping sleeve 10.2 and the rotating cylinder are made of wear-resistant materials, thereby improving the wear resistance of the friction components of the equipment and extending the service life of each friction component. Furthermore, the friction contact surface between the damping sleeve 10.2 and the friction-fitting protrusion is set as a plane. The larger friction contact area of ​​the plane is beneficial to improving the friction resistance between the rotating cylinder and the damping sleeve 10.2. The swing arm is designed as a hollow structure, which makes the overall weight of the swing arm lighter and reduces the possibility of the swing arm rotating due to its own weight.

[0184] (Cover opening and closing component 8 - vertical swing)

[0185] like Figures 22 to 25 As shown, in another embodiment of the cover opening and closing assembly 8, the cover opening and closing assembly 8 is set to operate independently and before the cathode tilting assembly 4. That is, the cover opening and closing assembly 8 first opens the cover unit to the separated state, thereby allowing the cathode body 2 to move along the tilting path. The base body 7.1 is fixedly installed on the furnace platform or on one side of the electrolysis furnace. Of course, if the height direction allows, the cover opening and closing assembly 8 and its base body 7.1 can also be installed on the frame 3.4 of the cathode body 2.

[0186] Specifically, the movable segment 7.31 includes a middle part 7.312 rotatably mounted on the base body 7.1, a cover connecting part 7.313 and an air extraction connecting part 7.314 disposed on the front and rear sides of the middle part 7.312, and the cover opening and closing assembly 8 includes an opening and closing drive unit 8.1, which is connected to the middle part 7.312 and actuates the movable segment 7.31 to rotate, or is tractionally connected to the air extraction connecting part 7.314 and actuates the movable segment 7.31 to rotate. The movable segment 7.31 is configured to rotate upward about a horizontal axis so that at least one cover unit moves away from the cathode body 2 and leaves the assembled state, and another cover unit is provided with a parallelogram structure between it and the movable segment 7.31, and moves away from the cathode body 2 along with the movable segment 7.31.

[0187] In the above embodiment, the rotation axes of the movable segment 7.31 and the housing body 7.2 are set to rotate about the horizontal axis. Therefore, the movements of the movable segment 7.31 and the housing body 7.2 are both in the vertical plane.

[0188] As one actuation method of the opening and closing drive unit 8.1, the fixed end of the opening and closing drive unit 8.1 is rotatably disposed at the bottom of the base body 7.1 and located on the side away from the cover body 7.2, and the movable end of the opening and closing drive unit 8.1 is rotatably disposed on the air extraction connection 7.314 of the movable segment 7.31. The opening and closing drive unit 8.1 is configured as a linear actuator, which can perform linear extension and retraction actions, preferably an electric pull rod 8.2 or an electric cylinder.

[0189] Specifically, a rotating base 7.12 is provided at the top of the base body 7.1, a hinge shaft 7.13 is provided on the rotating base 7.12, and a rotating connecting seat 7.315 is provided at the bottom of the middle part 7.312, and the rotating connecting seat 7.315 is rotatably mounted on the hinge shaft 7.13;

[0190] Specifically, it also includes a pull rod 8.2, a swing frame 8.3 and a mounting base 8.4 disposed at one end of the pull rod 8.2, and the other end of the pull rod 8.2 is rotatably disposed on the rotating base 7.12 of the base body 7.1 via a rotating shaft 7.14. The rotating shaft 7.14 is disposed on the base body 7.1 at the lower part corresponding to the hinge shaft 7.13. The swing frame 8.3 is provided with a first pin 8.31 and a second pin 8.32. The mounting base 8.4 is rotatably connected to the swing frame 8.3 via the first pin 8.31, and the mounting base 8.4 is fixedly connected to the cover connection part 7.313. The swing frame 8.3 is rotatably connected to one end of the pull rod 8.2 via the second pin 8.32, and the swing frame 8.3 is fixedly connected to another cover unit. The other cover unit moves away from the cathode body 2 and the cover connection part 7.313 along with the movable segment 7.31.

[0191] In this embodiment, the housing unit assembled into the housing body 7.2 is defined as the exhaust housing 7.23 and the auxiliary housing 7.24. The exhaust housing 7.23 is fixedly connected to the housing connecting part 7.313, the mounting base 8.4 is fixedly connected to the exhaust housing 7.23, and the swing frame 8.3 is fixedly connected to the auxiliary housing 7.24.

[0192] The rotating shaft 7.14, the hinge shaft 7.13, the first pin 8.31, the second pin 8.32, and the rotating connecting seat 7.315, the air extraction pipe 7.3, the tie rod 8.2 and the swing frame 8.3 together form a parallelogram linkage mechanism;

[0193] When crucible assembly 6 needs to be placed or removed, the opening / closing drive unit 8.1 pulls the vacuum connection 7.314, causing the movable segment 7.31 to tilt upwards around the hinge axis 7.13. At this time, the mounting seat 8.4 on the cover connection 7.313 rotates accordingly and rotates relative to the pull rod 8.2 and the swing frame 8.3, causing the auxiliary cover 7.24 to swing relative to the vacuum cover 7.23 along with the swing frame 8.3. Under the linkage of the parallelogram linkage mechanism, the pull rod 8.2 is pulled through the second pin 8.32. The movable swing frame 8.3 rotates along the first pin 8.31, thereby causing the auxiliary cover 7.24 to tilt relative to the first pin 8.31 as the center of rotation, thereby realizing the separation of the cover body 7.2 and the auxiliary cover 7.24 moving away from the exhaust cover 7.23. At this time, the cover unit has moved upward away from the cathode body 2. Subsequently, the cathode body 2 tilts to the clearance notch 5.3 to allow the crucible clamping component to move in the furnace cavity 1.1, and the space for cover opening and component release allows for the replacement operation of the cathode body 2.

[0194] like Figure 24 and Figure 25 As shown, when the cover opening and closing assembly 8 drives the exhaust pipe 7.3 to tilt, the exhaust pipe 7.3 drives the pull rod 8.2 to lift synchronously through the swing frame 8.3. Under the linkage of the parallelogram linkage mechanism, the pull rod 8.2 simultaneously applies a reverse pulling force to the swing frame 8.3, thereby causing the swing frame 8.3 to tilt downward relative to the exhaust pipe 7.3 along the first pin shaft 8.31, thus achieving the purpose of the auxiliary cover 7.24 tilting downward relative to the exhaust cover 7.23.

[0195] from Figure 22 and Figure 24 As can be seen, the mounting base 8.4 and the exhaust pipe 7.3, and the rotating connecting base 7.315 and the exhaust pipe 7.3 are fixedly connected by several clamps, so as to realize the detachable connection between the exhaust pipe 7.3 and the pull rod 8.2 assembly, which facilitates subsequent cleaning or replacement of parts; the base body 7.1 is provided with a clearance groove corresponding to the pull rod 8.2 assembly.

[0196] As a further explanation of the opening and closing of the movable segment 7.31, in the spliced ​​state of the main body 7.2, the end of the suction connection section extends vertically upward, and a sealing gasket 7.39 is fixedly provided on the port of the suction connection section. The suction pipe 7.3 also includes a suction section 7.38. In the spliced ​​state, the port of the suction section 7.38 is spliced ​​with the port of the suction connection section, and a seal is formed by the sealing gasket 7.39. It should be noted that the sealing gasket 7.39 has sufficient thickness to separate from the suction section 7.38 when the movable segment 7.31 is tilted. When the suction connection section returns to the spliced ​​position, the sealing gasket 7.39 and the port of the suction section 7.38 re-abut and maintain a seal.

[0197] In other embodiments, when the base body is mounted on the frame, the tilting opening and closing assembly and the cover body are actuated by the cathode yaw assembly and move synchronously with the cathode body to avoid the gap. At this time, the air extraction connection rotates relative to the upstream air extraction pipe, and then the cover body tilts open.

[0198] (Dust removal module 7.4)

[0199] Specifically, there are multiple electrolytic furnace devices 1, and each electrolytic furnace device 1 is connected to the main body of the casing 7.2 and the dust removal module 7.4 through an exhaust pipe 7.3.

[0200] The dust removal module 7.4 includes a cyclone dust collector 7.41, a bag filter, and a wind box 7.42 connected to multiple exhaust pipes 7.3. After the flue gas passes through the main body 7.2 to the exhaust pipe 7.3, the cyclone dust collector 7.41 and the bag filter sequentially filter and recover the absorbed flue gas. The cyclone dust collector 7.41 is connected to the ventilation box 7.42 and the bag filter in sequence. Multiple electrolytic furnaces share a set of crucible extraction and dust removal system, which effectively reduces equipment investment costs.

[0201] By adopting the above technical solution, two dust removal processes are set up. After the cyclone dust collector 7.41 filters out large particles of flue gas, small particles of flue gas are still mixed in the airflow. After passing through the bag dust collector, the small particles of flue gas are also filtered out and the flue gas is collected to improve dust removal efficiency. Moreover, most of the rare earth elements and metal elements mixed in the flue gas can be recycled and reused, reducing waste.

[0202] The cyclone dust collector 7.41 is connected to the outlet end of the extraction pipe 7.3. The flue gas mixed with metal is drawn into the cyclone dust collector 7.41 through the extraction pipe 7.3, forming a rotating airflow inside the cyclone dust collector 7.41. The flue gas in the airflow moves towards the outer wall under the action of centrifugal force and separates from the airflow. Subsequently, the flue gas that has undergone a first recovery in the cyclone dust collector 7.41 enters the bag filter dust collector along the extraction pipe 7.3. The bag filter dust collector is connected to the output end of the cyclone dust collector 7.41. When the dust-laden gas enters the bag filter dust collector, the large and heavy dust particles settle down due to gravity and fall into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is trapped, thus purifying the gas.

[0203] Specifically, the exhaust pipe 7.3 is made of PP or PE material. The PP or PE exhaust pipe 7.3 does not contain any metal elements. Therefore, during the transportation of flue gas, the oxidation of the metal pipe caused by high-temperature flue gas is avoided, which would lead to the mixing of impurity metals. This also ensures that the metals in the flue gas can be recovered as much as possible in the cyclone dust collector 7.41 and the bag dust collector.

[0204] Specifically, the output end of the bag filter is connected to an electrostatic precipitator to further separate the dust and improve the raw material collection efficiency.

[0205] Reference Figure 1 and Figure 26 As shown, in this embodiment, the cyclone dust collector 7.41 includes a cyclone cylinder 7.44 and a fan 7.45. The fan 7.45 is connected to the output end at the top of the cyclone cylinder 7.44 to drive the airflow into the inner cavity of the cyclone cylinder 7.44. The cyclone cylinder 7.44 includes a cylindrical cyclone section and a collection section formed at the lower end of the cyclone section and configured as an inverted cone. The inlet 7.46 of the cyclone dust collector 7.41 is located on the outer peripheral wall of the cyclone section. The rotating airflow inside the cyclone cylinder 7.44 moves in a spiral motion along the cylinder wall, forming a descending dust-laden airflow at the outer end. During the rotation, the flue gas is thrown towards the cylinder wall under the action of centrifugal force. After the flue gas contacts the cylinder wall and impacts it, it loses its inertial force and falls along the cylinder wall and gathers to the center of the collection section by relying only on the inlet velocity and its own gravity.

[0206] Furthermore, an air inlet is provided on the outer periphery near the top of the cyclone 7.44. The air inlet is provided with multiple input ports 7.46. Each input port 7.46 is used to connect to the exhaust pipes 7.3 of multiple electrolytic furnace devices 1. The flue gas output from the multiple electrolytic furnace devices 1 is separated by the cyclone dust collector 7.41 and then connected to the air box 7.42 and the bag filter for secondary dust removal and recycling.

[0207] The inlet 7.46 is tangent to the cylinder wall, and the exhaust pipe 7.3 is horizontally positioned near its outlet end. This ensures that the airflow entering the cyclone 7.44 flows along the cylinder wall, and the airflow inside the cyclone 7.44 descends in a rotating motion along the cylinder wall, reaching the bottom of the collection section.

[0208] The cyclone 7.44 has an air outlet pipe 7.47 inside. The upper end of the air outlet pipe 7.47 is connected to the fan 7.45, and the lower end is not higher than the lower end of the air inlet. After passing the bottom of the collecting section, the airflow is output from the cyclone 7.44 along the air outlet pipe 7.47, thereby controlling the path of the cyclone airflow and improving its collection effect at the bottom of the collecting section.

[0209] In this embodiment, the fan 7.45 is preferably a centrifugal fan 7.45, and the bag filter box 7.43 is a conventional dust removal device in the art, which will not be described in detail here.

[0210] (Crucible extraction device 11)

[0211] like Figure 1 and Figures 27 to 32 As shown, a crucible extraction device 11 is provided between multiple electrolytic furnace devices 1. The crucible extraction device 11 is located within the action path of the clamping assembly 11.1. Specifically, the electrolytic furnace device 1 and the crucible extraction device 11 are set on the same horizontal reference plane concrete base 12. The bottom of the crucible extraction device 11 is provided with a first pre-embedded component 13 and the bottom of the electrolytic furnace device 1 is provided with a second pre-embedded component 14. The first pre-embedded component 13 and the second pre-embedded component 14 are placed in the concrete base 12 and define the horizontal reference plane.

[0212] In this embodiment, the base layer 12 is used to provide a horizontal base surface, and the reliability of the calibration reference of the calibration plate 1.8 can be improved by the crucible extraction device 11 of the electrolytic furnace device 1 on the same horizontal reference surface.

[0213] like Figure 27 and Figure 28 As shown, the end of the electrolytic furnace device 1 is provided with a correction plate 1.8. The correction plate 1.8 is located within the action path of the clamping assembly 11.1, and the correction plate 1.8 is provided with correction points 1.81 corresponding to the clamping assembly 11.1. The correction points 1.81 are arranged with respect to the gripping or opening posture of the clamping unit, and the correction plate 1.8 is located within the adjustment range of the clamping assembly 11.1 actuated by the action module.

[0214] As one embodiment of the calibration point 1.81, the calibration point 1.81 can be a calibration pattern reference flush with the end face of the calibration plate 1.8, or it can be composed of multiple calibration posts disposed on the calibration plate 1.8. The calibration posts pass through the calibration plate 1.8 to form the calibration point 1.81. The calibration posts extend out of or are flush with the end face of the calibration plate 1.8. Alternatively, the calibration plate 1.8 can be adjusted by adjusting the relative height of the calibration posts. For example, the calibration posts can be fixed to the calibration plate 1.8 by threads.

[0215] As shown in the figure, as a further arrangement of the calibration point 1.81 and the clamping unit, there are multiple clamping units arranged in a circumferential direction, and multiple calibration points 1.81 are arranged circumferentially, and the calibration points 1.81 define a calibration contour. This calibration contour is consistent with the expected contour of the clamping unit, and the calibration center of the calibration contour corresponds to the clamping center of the clamping unit. That is, after the calibration of the clamping unit and the calibration point 1.81 is completed, the center alignment of the clamping unit is also completed.

[0216] Of course, there can be multiple sets of correction points 1.81. One set of correction points 1.81 corresponds to the gripping pose of the clamping unit, and another set of correction points 1.81 corresponds to the opening pose of the clamping unit. The two sets of correction points 1.81 form a concentric correction profile to further improve the correction accuracy of the clamping unit.

[0217] like Figure 29 and Figure 30 As shown, as a further embodiment of the positioning reference and the first pre-embedded component 13 of the crucible extraction device 11, the bottom of the crucible extraction device 11 is provided with a base assembly 11.2. The base assembly 11.2 includes a support base 11.21 connected to the action module, a first base plate 12.2 fixed on the base layer 12, and a positioning plate 11.23 fixed on the first base plate 12.2. The positioning plate 11.23 is provided with at least one positioning post 11.24. The bottom of the support base 11.21 is provided with a positioning hole 11.22 that matches the positioning post 11.24. The positioning post 11.24 and the positioning hole 11.22 are set about the rotation center of the clamping component 11.1. The center position of the base assembly 11.2 is corrected by the cooperation of the positioning post 11.24 and the positioning hole 11.22.

[0218] In addition, thanks to the modular base assembly 11.2, positioning plate 11.23 and first base plate 12.2, the positioning post 11.24 is defined as the basic reference, so that after the base assembly 11.2 is replaced or adjusted, the base assembly 11.2 before and after adjustment can use the same positioning reference.

[0219] The positioning plate 11.23 is fixedly connected to the first substrate 12.2 by a threaded connector, and the support base 11.21 is fixedly connected to the positioning plate 11.23 by a threaded connector. By adjusting the tightness of the multiple threaded connectors in the fixed area, the levelness between the support base 11.21, the positioning plate 11.23 and the first substrate 12.2 is adjusted. After the horizontal reference is leveled, the outline position of the clamping unit is further adjusted by the correction plate 1.8. Furthermore, the vertical position of the clamping unit is further adjusted by the vertical contact between the clamping unit and the correction point 1.81.

[0220] Referring further to the figure, as a further embodiment of the base assembly 11.2, the first substrate 12.2 is embedded in the base layer 12 and is horizontal to the surface of the base layer 12. The base layer 12 is provided with a plurality of embedded parts, which pass through and extend out of the first substrate 12.2. The positioning plate 11.23 is fixedly connected to the embedded parts. By embedding the first substrate 12.2 in the base layer 12, the first substrate 12.2 is flush with the surface of the base layer 12 during embedding. The verticality adjustment of the embedded parts ensures the horizontal error of the positioning plate 11.23, providing a reference for the collaborative operation of the electrolytic furnace module and the clamping module. The embedded parts are connected to the positioning plate 11.23 and the support base 11.21 as fixed connectors. This not only further optimizes the positional stability of the first substrate 12.2, but also improves the convenience of docking the positioning plate 11.23, the support plate and the first substrate 12.2.

[0221] The embedded part has a threaded portion 13.2 extending from the base layer 12 and the positioning plate 11.23. The end of the threaded portion 13.2 is provided with a nut 13.3. The embedded part constitutes the above-mentioned threaded connection. The fixed connection positions between the support base 11.21, the positioning plate 11.23 and the first base plate 12.2 are arranged radially with the central positioning post 11.24 and the positioning hole 11.22, which improves the reliability of the base assembly 11.2's fixation and horizontal adjustment.

[0222] In the above embodiment, the positioning plate 11.23 and the support base 11.21 in the base assembly 11.2 cooperate with the positioning post 11.24 and the positioning hole 11.22 to make the rotation center of the clamping assembly 11.1 strictly aligned with the positioning reference. The horizontal pre-embedding process of the first substrate 12.2 and the base layer 12 ensures that the electrolytic furnace module and the crucible extraction module are on the same horizontal reference, reducing the cumulative error in the multi-axis movement process.

[0223] like Figure 31 and Figure 32As shown, as a further embodiment of the positioning reference and the second pre-embedded component 14 for the electrolytic furnace device 1, as a further embodiment of the installation of the correction plate 1.8, the electrolytic furnace device 1 also includes a support platform 1.7 fixed on the horizontal plane of the base layer 12. The furnace platform component 1.2 is mounted on the support platform 1.7. Preferably, the support platform 1.7 is set on the first base plate 12.2, so as to share a horizontal reference with the crucible extraction module.

[0224] The second embedded component 14 includes a second substrate 12.4 disposed at the bottom of the corner of the support platform 1.7, and also includes a plurality of second embedded parts 14.1. The first substrate 12.2 has extended substrates 12.3 in both directions and forms one corner of the support platform 1.7. The positioning post 11.24 is disposed in the middle of the first substrate 12.2. An electrolytic furnace device 1 is respectively disposed on the extended substrates 12.3 on both sides of the first substrate 12.2. The second substrate 12.4 forms the remaining corners of the support platform 1.7. The second embedded parts 14.1 are supported at the bottom of the second substrate 12.4 and the first substrate 12.2.

[0225] The second embedded part 14.1 includes a main rod 14.1 embedded in the base layer 12, an upper rod 14.2 extending to the upper end of the main rod 14.1, and a lower rod 14.3 extending to the lower end of the main rod 14.1. The main rod 14.1 extends vertically, and the upper rod 14.2 and the lower rod 14.3 have horizontal bends. Preferably, the second embedded part 14.1 is configured as a tubular member, and the upper surfaces of the multiple upper rods 14.2 jointly define an adjustment plane, specifically the horizontal cross-section of the tubular member, and the adjustment plane of the upper rods 14.2 is flush with the lower surfaces of the first substrate 12.2 and the second substrate 12.4.

[0226] In this embodiment, the second embedded part 14.1 forms a horizontal adjustment plane, which serves as the horizontal base surface of the first substrate 12.2 and constitutes the first horizontal construction surface of the base layer 12. At this time, the first embedded part 13.1 is placed in the base layer 12, and the fixing holes on the first substrate 12.2 are aligned with the first embedded part 13.1 to position the first substrate 12.2 on the first horizontal construction surface. Then, the base layer 12 is further processed so that the upper surface of the first substrate 12.2 serves as the second horizontal construction surface, providing a horizontal reference surface for the first electrolytic furnace, the second electrolytic furnace, and the crucible extraction device 11. Through the above improvements, the lower surface of the first substrate 12.2 is guaranteed to be horizontal through the second embedded part 14.1, and the upper surface of the first substrate 12.2 is guaranteed to be horizontal through the construction of the concrete base layer 12, further improving the levelness of the first electrolytic furnace, the second electrolytic furnace, and the crucible extraction device 11 and effectively reducing height deviation.

[0227] Preferably, there are multiple second embedded parts 14.1, which are arranged on both sides of the installation area formed by the first embedded part 13.1. Specifically, the second embedded parts 14.1 are arranged below the extension substrate 12.3, thereby further improving the leveling of the first substrate 12.2. The support platforms 1.7 of the two adjacent electrolytic furnace devices 1 have support end plates 1.71 mounted on the extension substrate 12.3, thereby ensuring the reliability of the crucible extraction device 11 when transferring crucibles for the first electrolytic furnace and the second electrolytic furnace.

[0228] The correction plate 1.8 is fixed to the support platform 1.7 by multiple bolts. The levelness of the correction plate 1.8 is adjusted by adjusting the tightness of the multiple bolts.

[0229] like Figures 33 to 35 As shown, in the above embodiment, as a further improvement to the clamping assembly 11.1, the clamping assembly 11.1 includes a plurality of clamping arms 11.11 and a drive module 11.14 for actuating the clamping arms 11.11 to grip the crucible assembly. A hinge seat 11.17 is provided between the clamping arms 11.11 and the drive module 11.14. The two ends of the clamping arms 11.11 are divided into a drive end 11.12 connected to the drive module 11.14 and a clamping end 11 for gripping the crucible assembly. 13. The middle part of the clamping arm 11.11 is hinged to the hinge seat 11.17. The hinge seat 11.17 is fixed to the lower part of the drive module 11.14. The drive module includes a three-jaw chuck 11.15 driven by the drive component 11.5. The drive end 11.12 of the clamping arm 11.11 is connected to the movable jaw of the three-jaw chuck 11.15. As the movable jaw moves radially along the chuck body of the three-jaw chuck 11.15, the clamping end 11.13 switches between the gripping position and the opening position.

[0230] As an example, the drive unit 11.5 is connected to the three-jaw chuck via a belt drive structure, and a protective cover is provided outside the belt drive structure.

[0231] To improve the protection of the drive assembly, a dustproof disc 11.18 is provided on the outside of the drive assembly, a three-jaw chuck 11.15 is located inside the dustproof disc 11.18, and a clamping arm 11.11 is located outside the dustproof disc 11.18. The drive component is a cylinder or a hydraulic cylinder. Furthermore, the end of the belt drive structure is provided with a drive shaft end that drives the three-jaw chuck and moves it. The three-jaw chuck 11.15 is a conventional feature in the mechanical field. It is sufficient to place the three-jaw chuck 11.15 inside the dustproof disc 11.18 to protect the three-jaw chuck 11.15.

[0232] Furthermore, to achieve the connection between the three-jaw chuck 11.15 and the drive end 11.12 of the clamping arm 11.11, the drive assembly also includes a transmission rod 11.16 passing through the dustproof disc 11.18. The transmission rod 11.16 is slidably disposed within the dustproof disc 11.18, with one end connected to an actuating end of the three-jaw chuck 11.15 and the other end connected to the drive end 11.12 of the clamping arm 11.11. The drive end 11.12 is hinged to the end of the transmission rod 11.16. The outer wall of the dustproof disc 11.18 has a spacer for... The transmission rod 11.16 extends through a clearance hole 11.19, and a sealing ring 11.3 is provided in the clearance hole 11.19 to achieve a seal between the transmission rod 11.16 and the clearance hole 11.19. A sealing cover is also provided on the outer wall of the clearance hole 11.19. The sealing cover covers the sealing ring 11.3 and abuts against the sealing ring 11.3. Preferably, the sealing ring 11.3 is forced to maintain a posture of holding the transmission rod 11.16, thereby ensuring the sealing effect of the dustproof disc 11.18. The sealing cover is preferably threaded.

[0233] The purpose is to reduce the impact of exhaust gas containing metal impurities entering the drive assembly during the electrolysis process. In this embodiment, a dustproof disc 11.18 is provided on the outside of the drive assembly, and the clearance hole 11.19 between the transmission rod 11.16 and the dustproof disc 11.18 is double-sealed by the sealing ring 11.3 and the sealing cover, which effectively blocks the exhaust gas. Only the hinge part between the clamping arm 11.11 and the transmission rod 11.16 is exposed, which greatly avoids the transmission jamming problem caused by the accumulation of metal impurities and significantly improves the long-term operational reliability of the gripper.

[0234] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An electrolytic furnace system for rare earth metals, characterized in that, include: At least one electrolytic furnace device (1) includes a furnace platform assembly (1.2) with a built-in furnace cavity (1.1), a crucible assembly (6) is provided at the bottom of the furnace cavity (1.1), the furnace platform assembly (1.2) has a built-in cooling cavity (1.3), a coolant is circulated in the cooling cavity (1.3), and a furnace cover assembly (1.4) is provided on the upper part of the furnace platform assembly (1.2), the furnace cover assembly (1.4) is connected to the cooling cavity (1.3) and forms a steam guiding cavity (1.5) above the cooling cavity (1.3); The crucible extraction device (11) includes a multi-axis movable clamping assembly (11.1) for gripping and placing the crucible assembly (6); The cathode device includes a cathode body (2) inserted into the furnace cavity (1.1), a cathode frame (3) connected to the cathode body (2), and a cathode sway assembly (4), wherein the cathode sway assembly (4) actuates the cathode body (2) and plans a sway path through the center of the furnace cavity (1.1); The anode device (5) includes an anode assembly (5.1) spaced apart from the furnace cover assembly (1.4), the anode assembly (5.1) having a built-in circulation channel (5.2), and the anode assembly (5.1) being arranged on the furnace platform assembly (1.2) and extending into the furnace cavity (1.1), at least one anode assembly (5.1) being provided with a clearance notch (5.3) located in the sway path, the clearance notch (5.3) being configured to at least partially accommodate the cathode body (2) to release space in the furnace cavity (1.1) corresponding to the direction of crucible projection; The dust collection and recovery device (7) includes two housing units covered on the cathode body (2), and an exhaust pipe (7.3) and a housing opening and closing assembly (8) connected to the housing body (7.2). The exhaust pipe (7.3) is connected to the dust removal module (7.4). The housing units are spliced ​​together to form the housing body (7.2). The housing opening and closing assembly (8) drives at least the housing unit near the crucible extraction device (11) away from the action path of the clamping assembly (11.1) and drives the housing units to open and close to each other. In the closed state, the housing unit connects the exhaust pipe (7.3) and the dust removal module (7.4) to form an exhaust channel. The cathode frame (3) includes a first frame (3.1) and a second frame (3.2) rotatably mounted on the first frame (3.1). The cover opening and closing assembly (8) and the cover body (7.2) are mounted on the second frame (3.2). The cathode body (2) is mounted on the second frame (3.2). The cathode sway assembly (4) includes a sway actuation unit (4.1) mounted between the first frame (3.1) and the second frame (3.2). The sway actuation unit (4.1) acts on the second frame (3.2) and drives the cathode body (2) to move along the sway path. The bottom of the first frame (3.1) is also connected to a cathode lifting assembly (9). The cathode lifting assembly (9) is configured to adjust the vertical distance between the cathode body (2) and the crucible assembly (6).

2. The electrolytic furnace system for rare earth metals according to claim 1, characterized in that: The cooling chamber (1.3) is arranged around the outer periphery of the furnace chamber (1.1), and a flow guide ring pipe (1.6) is provided inside the cooling chamber (1.3). The flow guide ring pipe (1.6) is connected to an inlet (1.61) and an outlet (1.62) extending into the steam guide chamber (1.5). The cooling chamber (1.3) is connected to a circulation outlet (5.22) (1.31), and the cooling chamber (1.3) forms a heat conduction structure with the anode assembly (5.1) through the furnace platform assembly (1.2).

3. An electrolytic furnace system for rare earth metals according to claim 1 or 2, characterized in that: The anode assembly (5.1) includes an iron base (5.11) and a copper contact plate (5.12) disposed on the furnace platform assembly (1.2). The circulation channel (5.2) is disposed inside the iron base (5.11). The iron base (5.11) connects the anode unit (5.13) and the copper contact plate (5.12) placed in the furnace cavity (1.1). The copper contact plate (5.12) is connected to the positive electrode copper busbar (2.1) on the electrolytic furnace device (1).

4. The electrolytic furnace system for rare earth metals according to claim 3, characterized in that: The anode assembly (5.1) extends radially along the furnace cavity (1.1) on the furnace platform assembly (1.2). A fixing assembly (5.4) is provided between the iron base (5.11) and the copper contact plate (5.12). The projections of the iron base (5.11) and the copper contact plate (5.12), as well as the projection of the fixing assembly (5.4), are at least partially located within the cooling cavity (1.3).

5. The electrolytic cell system for rare earth metals of claim 1, wherein: The cover opening and closing assembly (8) includes a base body (7.1), and the cover units are spaced apart to allow the end of the cathode frame (3) to be inserted; The cover opening and closing assembly (8) is disposed on the cathode frame (3) and follows to the avoidance position, or the cover opening and closing assembly (8) operates independently of the cathode yaw assembly (4) to allow the cathode body (2) to move along the yaw path. The evacuation pipe (7.3) includes a movable segment (7.31) connected to a cover unit, the movable segment (7.31) connecting or disconnecting the evacuation passage with the actuation of the cover opening and closing assembly (8).

6. An electrolytic cell system for rare earth metals as claimed in claim 5, wherein: The cover opening and closing assembly (8) includes an opening and closing drive unit (8.1), a first swing arm (8.5) having a first rotating shaft (8.51), and a second swing arm (8.6) having a second rotating shaft (8.61). One end of the first swing arm (8.5) is connected to the base body (7.1) via the first rotating shaft (8.51), and the other end of the first swing arm (8.5) is connected to the cover unit. A damping structure (10) is provided on the first rotating shaft (8.51). One end of the second swing arm (8.6) is connected to the actuating end of the opening and closing drive unit (8.1) via the second rotating shaft (8.61), or the second rotating shaft (8.61) and the opening and closing drive unit (8.1) are connected by an opening and closing transmission mechanism (8.7), and the other end of the second swing arm (8.6) is connected to another housing unit; The opening and closing drive unit (8.1) actuates the second swing arm (8.6) to move relative to the first swing arm (8.5) in the horizontal direction via the second rotating shaft (8.61), and the movable segment (7.31) follows the second swing arm (8.6) to rotate relative to the air extraction pipe (7.3).

7. The electrolytic furnace system for rare earth metals according to claim 5, characterized in that: The movable segment (7.31) includes a middle part (7.312) rotatably disposed on the base body (7.1), a cover connecting part (7.313) and an air extraction connecting part (7.314) disposed on the front and rear sides of the middle part (7.312). The cover opening and closing assembly (8) includes an opening and closing drive unit (8.1). The opening and closing drive unit (8.1) is connected to the middle part (7.312) and actuates the movable segment (7.31) to rotate, or is tractionally connected to the air extraction connecting part (7.314) and actuates the movable segment (7.31) to rotate. The movable segment (7.31) is configured to rotate upward about a horizontal axis so that at least one cover unit moves away from the cathode body (2) and leaves the assembled state. A parallelogram structure is provided between another cover unit and the movable segment (7.31), and moves away from the cathode body (2) along with the movable segment (7.31).

8. The electrolytic cell system for rare earth metals of claim 1, wherein: The number of electrolytic furnace devices (1) is multiple. Each electrolytic furnace device (1) is connected to the main body of the cover (7.2) and the dust removal module (7.4) through the exhaust pipe (7.3). A crucible extraction device (11) is provided between the multiple electrolytic furnace devices (1) and is located within the action path of the clamping assembly (11.1). The dust removal module (7.4) includes a cyclone dust collector (7.41) connected to multiple exhaust pipes (7.3). The cyclone dust collector (7.41) is connected in sequence to the ventilation box (7.42) and the bag dust collector box (7.43).

9. The electrolytic cell system for rare earth metals of claim 1, wherein: The electrolytic furnace device (1) and the crucible extraction device (11) are set on the same horizontal reference plane concrete base (12). The crucible extraction device (11) is provided with a first pre-embedded component (13) at the bottom and the electrolytic furnace device (1) is provided with a second pre-embedded component (14) at the bottom. The first pre-embedded component (13) and the second pre-embedded component (14) are placed in the concrete base (12) and define the horizontal reference plane. The end of the electrolytic furnace device (1) is provided with a correction plate (1.8). The correction plate (1.8) is located within the action path of the clamping assembly (11.1), and the correction plate (1.8) is provided with correction points (1.81) corresponding to the clamping assembly (11.1). The correction points (1.81) are arranged with respect to the gripping or opening posture of the clamping unit.

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