A molten salt electrolysis collection system and method of controlling the same

Abstract

The application discloses a fused salt electrolysis collecting system and a control method thereof, which comprises a crucible extraction device and a discharging and forming device. The crucible extraction device comprises a base assembly, a Z-axis rotating module arranged on the base assembly, a Z-axis lifting module arranged on the action end of the Z-axis rotating module, and a linear transfer module arranged on the action end of the Z-axis lifting module. A clamping assembly is arranged on the action end of the linear driving module. The clamping assembly comprises a plurality of clamping units. The clamping unit comprises a clamping arm used for performing a grabbing and releasing action. The end of the clamping end opposite to the side of the crucible is provided with a clamping groove. The bottom of the clamping groove is provided with a horizontally arranged supporting surface and an S-shaped guide surface located at the top. The end of the clamping end opposite to the side of the crucible is provided with the clamping groove. The bottom of the clamping groove is provided with the horizontally arranged supporting surface and the S-shaped guide surface located at the top, which facilitates guiding and entering and better grabbing the crucible.

Description

Technical Field

[0001] This invention relates to the field of molten salt electrolysis collection systems, and more specifically to a molten salt electrolysis collection system and its control method. Background Technology

[0002] Currently, rare earth electrolysis is the main method for producing rare earth metals. As the main equipment in this process, the structure of the electrolytic cell directly affects the quality of rare earth metal products, working efficiency, and production costs. Existing electrolytic furnaces typically have a molybdenum pot for collecting rare earth metals placed at the bottom of the furnace, with graphite anodes installed around the furnace chamber and a tungsten rod inserted in the middle of the furnace chamber as the cathode. Rare earth electrolysis is carried out under the action of the inter-electrode electric field between the cathode and the anode.

[0003] Before electrolysis, the molten salt electrolysis collection system needs to be equipped with clamping components to transfer the crucible into the electrolysis furnace, or after the electrolysis is completed (when the temperature is low), the crucible is transferred to the forming device to be tilted. As the production line expands, the crucible size increases, which places more demands on its transfer process. The existing clamping structure is too simple, and it only has a single point of contact with the crucible, which is prone to loose clamping and may cause the crucible to tip over. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a molten salt electrolysis collection system. This system solves the shortcomings of existing molten salt electrolysis collection systems, which, as production lines expand and crucible sizes increase, place greater demands on the transfer process. Furthermore, the existing clamping structures are too simple and prone to loose clamping, which can lead to crucible tipping over.

[0005] The technical solution adopted by the present invention is as follows: A molten salt electrolysis collection system, located between an adjacent first electrolysis furnace and a second electrolysis furnace, defines a transfer area, including: a crucible extraction device and a discharge forming device. The crucible extraction device includes a base assembly, a Z-axis rotation module disposed on the base assembly, a Z-axis lifting module disposed on the moving end of the Z-axis rotation module, and a linear transfer module disposed on the moving end of the Z-axis lifting module. The moving end of the linear transfer module is provided with a clamping assembly; the clamping assembly includes multiple clamping units; the clamping unit includes a clamping arm for performing gripping and releasing actions, wherein the end of the clamping end on the side facing the crucible is provided with a slot, the bottom of the slot is provided with a horizontally arranged support surface and an S-shaped guide surface located at the top.

[0006] Optionally, the discharge forming device is provided with a crucible discharge assembly and a forming receiving assembly for positioning the crucible. The crucible discharge assembly is located within the transfer path of the clamping assembly, and the crucible discharge assembly receives crucibles from the first electrolytic furnace and the second electrolytic furnace and transfers them to the forming receiving assembly.

[0007] Optionally, a fastening detection plate is installed on the outside of the slot. The fastening detection plate includes a plate body, a sealed cavity inside the plate body, and an opening at the top of the plate body. A fastening column adapted to the opening is installed in the opening. The cavity is filled with liquid. The inner shell is made of elastic metal material. The plate body includes an outer shell and an inner shell.

[0008] Preferably, the fastening detection plate is arc-shaped, and when the clamping arms of multiple clamping units are combined and pressed tightly against the crucible, the fastening detection plates on the multiple clamping arms are combined into a complete circle.

[0009] Optionally, the outer shell is made of metal, and the outer side of the inner shell is provided with a heat-insulating and heat-resistant flexible material.

[0010] Optionally, the cavity is equipped with a telescopic cylinder, which includes an outer cylinder and an inner cylinder inserted into the outer cylinder. A temperature sensor is provided inside the outer cylinder, and an elastic telescopic component made of shape memory metal is provided at the bottom of the inner cylinder. The movable end of the elastic telescopic component is connected to the temperature sensor installed at the bottom of the outer cylinder.

[0011] Optionally, the top of the plate is also covered with ceramic fiber fabric; both the inner shell and the heat-insulating and heat-resistant flexible material are provided with perforations to facilitate the passage of the inner cylinder, and ceramic heat-conducting sheets are fixed at the ends of the perforations in the heat-insulating and heat-resistant flexible material.

[0012] Optionally, the two ends of the clamping arm are a driving end and a clamping end, respectively, and the driving end and the clamping end move in opposite directions.

[0013] Optionally, the clamping assembly further includes a driving assembly and a hinge seat. The driving assembly is located at the driving end of the clamping arm and drives the driving end. The hinge seat is located on the inner side of the plurality of clamping arms.

[0014] Optionally, the clamping arm is provided with a hinge end connected to the hinge seat, so that the driving end and the clamping end can rotate around the hinge end; the driving assembly includes a three-jaw chuck driven by a servo motor, the driving end of the clamping arm is connected to the movable jaw of the three-jaw chuck, and as the movable jaw moves radially along the chuck body of the three-jaw chuck, the clamping end switches between a gripping position and an opening position.

[0015] Optionally, a dustproof disc is provided on the outside of the drive assembly, and a three-jaw chuck is disposed inside the dustproof disc. A transmission rod is radially movably disposed inside the dustproof disc. A displacement sensor is mounted on the outside of the three-jaw chuck to detect the movement length of the transmission rod. The control unit is used to detect the percentage of torque output of the servo motor and to receive the movement length signal of the transmission rod transmitted by the displacement sensor.

[0016] Optionally, the heat-insulating and heat-resistant flexible material is made of ceramic fiber fabric.

[0017] This invention also discloses a control method for a molten salt electrolysis collection system, comprising the following steps:

[0018] 1) When the transmission rod moves radially along the dustproof disc, it causes the drive end to move horizontally. Since the hinge end in the middle of the clamping arm is fixed in the horizontal direction, the drive end rotates relative to the transmission rod, and the clamping end moves inward. That is, multiple clamping ends form a close-up shape, thereby clamping the molybdenum pot in the electrolytic cell.

[0019] 2) When L is satisfied t =L0,S t =S0, indicating successful clamping; when L t =L0,S t If S0 > 0, clamping failure is detected. The system increases the servo torque output until L is satisfied. t <L max S t =S0, clamping is successful if L is satisfied. t =L max S t >S0 indicates clamping failure; the equipment is reset, and manual intervention is required. Once S is detected... t <S0, the equipment is running normally. After the operation is completed, the deformation of the gripper is detected, an alarm is issued, and manual intervention is required;

[0020] 3) When released, the servo motor is in position mode, monitoring the torque output percentage; when S is satisfied... t =S0,L t <L max The clamping is deemed successful when S is satisfied. t =S0,L t >L max If the bottom furnace ore is found to be abnormal, the grippers are deformed, and an alarm is triggered after the equipment has finished normal operation, manual intervention is required.

[0021] In summary, the present invention has the following beneficial effects:

[0022] 1. The present invention has a slot at the end of the clamping end on the side facing the crucible. The bottom of the slot has a horizontally arranged support surface and an S-shaped guide surface at the top, which facilitates the guidance into the crucible and makes it easier to grip it.

[0023] 2. In this invention, when the clamping arms of multiple clamping units are combined and tightly attached to the crucible, the fastening detection plates on the multiple clamping arms are combined into a complete circle, forming a curved surface to support the crucible as a whole, which has a good clamping effect on the bucket-shaped crucible; further, the support surface forms a multi-support structure, so that even if the crucible is dislodged from the curved surface, the crucible flange can be clamped again.

[0024] 3. In this invention, as the clamping arms are joined and closely attached to the crucible, the fastening column protrudes upward and abuts against the flange of the crucible. The inner shell deforms, resulting in a larger contact area with the crucible. Furthermore, multiple support points in both the horizontal and vertical directions provide a more secure clamping grip.

[0025] 4. In this invention, the ceramic heat-conducting sheet increases the heat transfer efficiency, making the temperature sensor more accurate. On the other hand, the protruding ceramic heat-conducting sheet pushes the heat-insulating and heat-resistant flexible material to bulge downwards, forming multiple contact friction points and increasing the fastening efficiency. Attached Figure Description

[0026] Figure 1 This is a top view of the molten salt electrolysis collection system of Embodiment 1 of the present invention;

[0027] Figure 2 This is a perspective view of the crucible extraction device of the molten salt electrolysis collection system of Embodiment 1 of the present invention;

[0028] Figure 3 This is an exploded view of the clamping assembly of the molten salt electrolysis collection system according to Embodiment 1 of the present invention;

[0029] Figure 4 This is an internal view of the clamping assembly of the molten salt electrolysis collection system according to Embodiment 1 of the present invention;

[0030] Figure 5 This is a perspective view of the clamping assembly of the molten salt electrolysis collection system according to Embodiment 2 of the present invention;

[0031] Figure 6 This is an internal structural diagram of the fastening detection plate of the molten salt electrolysis collection system of Embodiment 2 of the present invention;

[0032] Figure 7 This is a perspective view of the clamping assembly of the molten salt electrolysis collection system according to Embodiment 4 of the present invention.

[0033] The figures are labeled as follows: 1. First electrolytic furnace; 2. Second electrolytic furnace; 3. Crucible extraction device; 4. Discharge and forming device; 5. Base assembly; 6. Z-axis rotation module; 7. Z-axis lifting module; 8. Linear transfer module; 10. Clamping unit; 11. Servo motor; 12. Clamping arm; 13. Drive assembly; 14. Hinge seat; 15. Drive end; 16. Clamping end; 17. Three-jaw chuck; 18. Movable jaw; 19. Dustproof disc; 20. Transmission rod; 21. Connecting groove. 2. Guide seat, 23. Correction plate, 24. Slot, 25. Support surface, 26. S-shaped guide surface, 27. Fastening detection plate, 28. Crucible discharge assembly, 29. Forming receiving assembly, 30. Plate body, 31. Cavity, 32. Opening, 33. Outer shell, 34. Inner shell, 35. Fastening column, 36. Outer cylinder, 37. Inner cylinder, 38. Temperature sensor, 39. Elastic telescopic component, 40. Perforation, 41. Flange, 42. Ceramic heat-conducting sheet, 43. Displacement sensor. Detailed Implementation

[0034] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the invention.

[0035] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] Example 1

[0037] The technical solution adopted in this invention is as follows:

[0038] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this invention discloses a molten salt electrolysis collection system. A transfer area is defined between a first electrolytic furnace 1 and a second electrolytic furnace 2, which are arranged adjacently. Both the first and second electrolytic furnaces are provided with electrolysis chambers for accommodating crucibles. The system includes a crucible extraction device 3 and a material discharge forming device 4. The crucible extraction device includes a base assembly 5, a Z-axis rotation module 6 mounted on the base assembly, a Z-axis lifting module 7 mounted on the moving end of the Z-axis rotation module, and a linear transfer module 8 mounted on the moving end of the Z-axis lifting module. The moving end of the linear transfer module is provided with a detachable clamping assembly. A flange 41 is provided on the top of the outer wall of the crucible. The material discharge forming device is provided with a crucible discharge assembly 28 and a forming receiving assembly 29 for positioning the crucible.

[0039] The clamping assembly includes multiple clamping units 10; each clamping unit includes a clamping arm 12 for performing gripping and releasing actions, a drive assembly 13, and a hinge seat 14, wherein the two ends of the clamping arm are a drive end 15 and a clamping end 16, and the drive end and the clamping end move in opposite directions.

[0040] A hinge base is located inside multiple clamping arms. Each clamping arm has a hinge end connected to the hinge base, allowing the driving end and the clamping end to rotate around the hinge end. The driving assembly includes a three-jaw chuck 17 driven by a servo motor 11. The driving end of the clamping arm is connected to the movable jaw 18 of the three-jaw chuck, and as the movable jaw moves radially along the chuck body of the three-jaw chuck, the clamping end switches between a gripping position and an opening position.

[0041] In one embodiment, a transmission box is provided on the dustproof disc, and a transmission assembly is provided inside the transmission box. The transmission assembly is a pulley assembly, including a drive pulley connected to the output shaft of the drive component, a driven pulley connected to the three-jaw chuck, and a transmission belt connected to the drive pulley and the driven pulley; at the same time, a drive rod is provided on the driven pulley and extends into the three-jaw chuck to drive the three-jaw chuck.

[0042] The drive assembly is provided with a dustproof disc 19 on the outside, the three-jaw chuck is located inside the dustproof disc, and the clamping arm is located outside the dustproof disc.

[0043] A transmission rod 20 is radially movably arranged inside the dustproof tray. One end of the transmission rod is limited and connected to the movable jaw, and the other end extends out of the dustproof tray and is hinged to the drive end of the clamping arm. A connecting groove 21 is provided on the inner end of the transmission rod facing the movable jaw, and the jaw portion of the movable jaw extends into the connecting groove. A guide seat 22 is also provided inside the dustproof tray, and the transmission rod is slidably disposed within the guide groove of the guide seat. A sliding groove is formed on the guide groove to accommodate the movable jaw extending in and sliding axially. This invention is particularly suitable for large-size production lines for processing large-size crucibles.

[0044] In this embodiment, the three-jaw chuck is a commonly used three-jaw chuck structure in existing machining equipment. The dustproof disc has a clearance hole capable of accommodating the extension of the transmission rod. A sealing ring is installed inside the clearance hole to seal the hole wall and the transmission rod. The clearance hole has an abutment portion inside and a sealing cap installed on the outside, which confines the sealing ring within the clearance hole. A groove 24 is provided at the end of the clamping end facing the crucible. The bottom of the groove has a horizontally arranged support surface 25 and an S-shaped guide surface 26 at the top.

[0045] In one embodiment, the first electrolytic furnace, the second electrolytic furnace, the crucible extraction device, and the discharge forming device are all set on a concrete base on the same horizontal reference plane.

[0046] In this embodiment, the end of the support platform is provided with a correction plate 23. The correction plate is located within the action path of the clamping unit, and the correction plate is provided with correction points corresponding to the clamping unit. The correction points are arranged with respect to the gripping or opening posture of the clamping unit.

[0047] In the embodiment, when the transmission rod moves radially along the dustproof disc, it causes the drive end to be displaced in the horizontal direction. Since the hinge end in the middle of the clamping arm is fixed in the horizontal direction, the drive end rotates relative to the transmission rod, and the clamping end moves inward. That is, multiple clamping ends form a close-up shape, thereby clamping the molybdenum pot in the electrolytic cell.

[0048] Example 2

[0049] The difference between Example 2 and Example 1 is that, as Figure 5 and Figure 6 As shown, in this embodiment, the crucible sidewall is inclined, forming a bucket shape. A slot is provided at the end of the clamping end on the side facing the crucible. A fastening detection plate 27 is mounted on the outside of the slot. The fastening detection plate includes a plate body 30, a sealed cavity 31 within the plate body, and an opening 32 at the top of the plate body. The plate body includes an outer shell 33 and an inner shell 34. The outer shell is made of metal, and the inner shell is made of elastic metal. A heat-insulating and heat-resistant flexible material is provided on the outside of the inner shell. A fastening column 35 adapted to the opening is installed in the opening. The top of the plate body is also covered with ceramic fiber fabric; the cavity is filled with liquid. The fastening detection plate is arc-shaped. When the clamping arms of multiple clamping units are combined and pressed tightly against the crucible, the fastening detection plates on the multiple clamping arms form a complete circle.

[0050] The cavity contains a telescopic cylinder, which includes an outer cylinder 36 and an inner cylinder 37 inserted into the outer cylinder. A temperature sensor 38 is located inside the outer cylinder, and an elastic telescopic component 39 made of shape memory metal is located at the bottom of the inner cylinder. The inner cylinder is made of copper. The movable end of the elastic telescopic component is connected to the temperature sensor installed at the bottom of the outer cylinder. Both the inner shell and the heat-insulating and heat-resistant flexible material have perforations 40 to facilitate the passage of the inner cylinder. A ceramic heat-conducting plate 42 is fixed at the end of the perforation in the heat-insulating and heat-resistant flexible material. The ceramic heat-conducting plate increases heat transfer efficiency, making the temperature sensor more accurate. Furthermore, the protruding ceramic heat-conducting plate pushes the heat-insulating and heat-resistant flexible material downwards, which, combined with the thermal expansion of the elastic telescopic component (which contracts below its abnormal temperature), allows the ceramic heat-conducting plate to adhere tightly to the outer wall of the crucible, forming multiple contact friction points and enhancing the fastening efficiency.

[0051] In this embodiment, a wireless transmitter is also provided on one side of the temperature sensor. The temperature sensor and the wireless transmitter can be installed together; specifically, an NTC temperature sensor can be used, along with a small wireless transmitter.

[0052] Currently, temperature control is a core process in rare earth electrolytic transfer, directly affecting metal quality, current efficiency, and energy consumption. Generally, intelligent temperature control systems are employed, integrating infrared thermal imagers and laser-induced breakdown spectrometers to predict temperature trends and control temperature fluctuations within the crucible to within ±1.5%. However, excessively low temperatures within the crucible during transfer can affect the crystallization results of rare earths. This invention utilizes a fastening detection plate at the end of the clamping arm to provide a detection point, facilitating gap judgment of the material temperature within the crucible without requiring a separate detection location. In particular, during electrolysis, oxides at room temperature are constantly replenished. For short periods, these oxides float on the surface, affecting infrared temperature sensors and causing large temperature fluctuations and data distortion. Utilizing a temperature sensor at the clamping end provides an auxiliary point for direct temperature monitoring, avoiding data distortion caused by the constant replenishment of oxides and their floating on the surface.

[0053] Currently, electrolytic furnaces generate electrolytic waste gas during the electrolysis process. This waste gas often contains metallic impurities. These impurities float with the waste gas and enter the transmission components at the upper end of the clamping arm. This causes the transmission parts to become jammed due to excessive metal contamination, resulting in poor transmission and affecting the normal operation of the device. The top of the plate is also covered with ceramic fiber fabric to ensure the sealing of the fastening detection plate.

[0054] In this embodiment, the clamping end is in close contact with the crucible. The fastening detection plate detects the temperature of the crucible while simultaneously pressing its upper end against the crucible flange. When the clamping arms of multiple clamping units are combined and in close contact with the crucible, the fastening detection plates on the multiple clamping arms combine to form a complete circle, creating a curved surface that provides overall support for the crucible, resulting in a good clamping effect.

[0055] As the clamping arms come together and press tightly against the crucible, their fastening pillars protrude upwards, abutting the crucible's flange. The inner shell deforms, increasing its contact area with the crucible, and multiple support points in both the lateral and longitudinal directions provide a more secure clamping grip. Furthermore, a temperature sensor records the crucible's temperature in real time and transmits it to the intelligent temperature control system in the data center, thus providing more accurate monitoring of the crucible's temperature.

[0056] Example 3

[0057] The difference between Example 3 and Example 2 is that the cavity is filled with a solid-liquid phase change material with a high specific heat capacity. The solid-liquid phase change material is solid at 100 degrees Celsius and liquid at temperatures above 100 degrees Celsius.

[0058] In this embodiment, a solid-liquid phase change material is used to absorb some of the heat, thus avoiding exceeding the operating temperature of the wireless transmitter and the elastic telescopic component.

[0059] In this embodiment, when the clamping assembly transfers the crucible into the electrolysis furnace, the clamping end is in close contact with the crucible. At this time, the fastening detection plate itself will not deform, and the crucible temperature is not high, so the safety risk is minimal. However, after the electrolysis is completed, the crucible is transferred to the forming device for tipping. At this time, the crucible tipps over and falls off, posing a risk of spilling material. The solid-liquid phase change material inside the cavity liquefies upon heating. The clamping arms are joined and closely attached to the crucible, with the fastening column protruding upwards and abutting against the crucible's flange. The inner shell deforms, increasing the contact area with the crucible, and multiple support points in both the horizontal and vertical directions provide a more secure clamping grip. The ceramic heat-conducting plate increases heat transfer efficiency, making the temperature sensor readings more accurate. Furthermore, the protruding ceramic heat-conducting plate pushes the heat-insulating and heat-resistant flexible material downwards, creating multiple contact friction points and enhancing the fastening efficiency. Multiple temperature sensors at different heights are used to detect the sidewall temperature of the crucible, facilitating analysis by the intelligent temperature control system.

[0060] Example 4

[0061] The difference between Example 3 and Example 2 is that, as Figure 7As shown, the clamping arm has a hinged end connected to the hinge seat, allowing the driving end and the clamping end to rotate around the hinged end. The driving assembly includes a three-jaw chuck driven by a servo motor. The driving end of the clamping arm is connected to the movable jaw of the three-jaw chuck, and as the movable jaw moves radially along the chuck body of the three-jaw chuck, the clamping end switches between a gripping position and an opening position. A dustproof disc is provided on the outside of the driving assembly, and the three-jaw chuck is located inside the dustproof disc. A transmission rod is radially movably arranged inside the dustproof disc. A displacement sensor 43 is mounted on the outside of the three-jaw chuck to detect the movement length of the transmission rod. The control unit is used to detect the percentage of torque output of the servo motor and receive the movement length signal of the transmission rod transmitted by the displacement sensor.

[0062] In one embodiment, the displacement sensor is a Hall effect displacement sensor with its magnet located near the end of the transmission rod.

[0063] Example 5

[0064] This invention also discloses a control method for a molten salt electrolysis collection system, comprising the following steps:

[0065] 1) When the transmission rod moves radially along the dustproof disc, it causes the drive end to move horizontally. Since the hinge end in the middle of the clamping arm is fixed in the horizontal direction, the drive end rotates relative to the transmission rod, and the clamping end moves inward. That is, multiple clamping ends form a close-up shape, thereby clamping the molybdenum pot in the electrolytic cell.

[0066] 2) When L is satisfied t =L0,S t =S0, indicating successful clamping; when L t =L0,S t If S0 > 0, clamping failure is detected. The system increases the servo torque output until L is satisfied. t <L max S t =S0, clamping is successful if L is satisfied. t =L max S t >S0 indicates clamping failure; the equipment is reset, and manual intervention is required. Once S is detected... t <S0, the equipment is running normally. After the operation is completed, the deformation of the gripper is detected, an alarm is issued, and manual intervention is required;

[0067] 3) When released, the servo motor is in position mode, monitoring the torque output percentage; when S is satisfied... t =S0,L t <L max The clamping is deemed successful when S is satisfied. t =S0,L t >Lmax If the bottom furnace ore is found to be abnormal, the grippers are deformed, and an alarm is triggered after the equipment has finished normal operation, manual intervention is required.

[0068] In this embodiment, L0 is the design value (normal value) of the servo driver load percentage, L max L represents the maximum allowable (normal) load percentage for the servo drive. t S0 represents the current value of the servo drive load percentage, and S0 represents the preset maximum clamping and releasing displacement. t This represents the final displacement during a single operation. In one embodiment, when released, the servo motor is in position mode, and the torque output percentage is monitored using the output current and driver. The load factor is calculated based on the current ratio: the load factor formula is: Load Factor = Actual Output Current / Rated Current × 100%. The control unit can be a computer system or a PLC (Programmable Logic Controller).

[0069] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformations made based on the description and drawings of the present invention, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present invention.

Claims

1. A molten salt electrolysis collection system, located between adjacent first and second electrolytic furnaces defining a transfer area, characterized in that, include: A crucible extraction device and a material discharge forming device are disclosed. The crucible extraction device includes a base assembly, a Z-axis rotation module mounted on the base assembly, a Z-axis lifting module mounted on the moving end of the Z-axis rotation module, and a linear transfer module mounted on the moving end of the Z-axis lifting module. The moving end of the linear transfer module is equipped with a clamping assembly. The clamping assembly includes multiple clamping units. Each clamping unit includes a clamping arm for performing gripping and releasing actions. The two ends of the clamping arm are a driving end and a clamping end, respectively, and the driving end and clamping end move in opposite directions. A slot is provided at the end of the clamping end facing the crucible. The bottom of the slot has a horizontally arranged support surface and an S-shaped guide surface at the top. A fastening detector is installed on the outside of the slot. The testing plate includes a plate body with a sealed cavity inside. An opening is located at the top of the plate body, and a fastening post adapted to the opening is installed within the opening. The cavity is filled with liquid. The plate body includes an outer shell and an inner shell, the inner shell being made of an elastic metal material. The fastening testing plate is arc-shaped. When the clamping arms of multiple clamping units are combined and pressed tightly against the crucible, the fastening testing plates on the multiple clamping arms form a complete circle. A telescopic cylinder is installed in the cavity. The telescopic cylinder includes an outer cylinder and an inner cylinder inserted into the outer cylinder. A temperature sensor is installed inside the outer cylinder, and an elastic telescopic component made of shape memory metal is located at the bottom of the inner cylinder. The movable end of the elastic telescopic component is connected to the temperature sensor installed at the bottom of the outer cylinder.

2. The molten salt electrolysis collection system as described in claim 1, characterized in that, The material discharge and forming device is equipped with a crucible discharge assembly for positioning crucibles and a forming receiving assembly. The crucible discharge assembly is located within the transfer path of the clamping assembly, and the crucible discharge assembly receives crucibles from the first electrolytic furnace and the second electrolytic furnace and transfers them to the forming receiving assembly.

3. The molten salt electrolysis collection system as described in claim 1, characterized in that, The top of the plate is also covered with ceramic fiber fabric; both the inner shell and the heat-insulating and heat-resistant flexible material are provided with perforations to facilitate the passage of the inner cylinder, and ceramic heat-conducting sheets are fixed at the ends of the perforations in the heat-insulating and heat-resistant flexible material.

4. A molten salt electrolysis collection system as described in claim 1, 2, or 3, characterized in that, The clamping assembly further includes a driving assembly and a hinge seat. The driving assembly is located at the driving end of the clamping arm and drives the driving end. The hinge seat is located on the inner side of multiple clamping arms.

5. The molten salt electrolysis collection system as described in claim 4, characterized in that, The clamping arm has a hinged end connected to the hinge seat, allowing the driving end and the clamping end to rotate around the hinged end. The driving assembly includes a three-jaw chuck driven by a servo motor and a control unit. The driving end of the clamping arm is connected to the movable jaw of the three-jaw chuck, and as the movable jaw moves radially along the chuck body of the three-jaw chuck, the clamping end switches between a gripping position and an opening position. A dustproof disc is provided on the outside of the driving assembly, and the three-jaw chuck is located inside the dustproof disc. A transmission rod is radially movably arranged inside the dustproof disc. A displacement sensor is installed on the outside of the three-jaw chuck to detect the movement length of the transmission rod. The control unit is used to detect the percentage of torque output of the servo motor and receive the movement length signal of the transmission rod transmitted by the displacement sensor.

6. A control method for a molten salt electrolysis collection system, characterized in that, The molten salt electrolysis collection system is the molten salt electrolysis collection system as described in claim 5; it includes the following steps: When the transmission rod moves radially along the dustproof disc, it causes the drive end to move horizontally. Since the hinge end in the middle of the clamping arm is fixed in the horizontal direction, the drive end rotates relative to the transmission rod, and the clamping end moves inward. That is, multiple clamping ends form a close-up shape, thereby clamping the molybdenum pot in the electrolytic cell. When L is satisfied t =L0,S t =S0, indicating successful clamping; when L t =L0,S t If S0 > 0, clamping failure is detected. The system increases the servo torque output until L is satisfied. t <L max S t =S0, clamping is successful if L is satisfied. t =L max S t >S0 indicates clamping failure; the equipment is reset and manual intervention is required. Once S is detected... t <S0, the equipment is running normally. After the operation is completed, the deformation of the gripper is detected, an alarm is issued, and manual intervention is required; When released, the servo motor is in position mode, monitoring the percentage of torque output; when S is satisfied... t =S0,L t <L max The clamping is deemed successful when S is satisfied. t =S0,L t >L max If the bottom furnace ore is found to be abnormal, the gripper is deformed, and an alarm is triggered after the equipment has finished normal operation, manual intervention is required. Among them, L t L is the design value for the servo drive load percentage. max L is the maximum allowed percentage of servo drive load. t S0 represents the current value of the servo drive load percentage, and S0 represents the preset maximum clamping and releasing displacement. t This represents the final displacement during a single run.

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