Furnace platform cooling structure of electrolytic furnace

Abstract

The utility model relates to a coil base cooling structure of an electrolytic furnace, which comprises a furnace cover plate with a placing hole in the center; the plurality of anode conductive assemblies are used for mounting anode plates, and the anode conductive assemblies are circumferentially arranged on the outer ring of the imbedding hole and extend to the upper part of the imbedding hole; the furnace cover plate is of a hollow structure, and a cooling cavity is formed in the hollow part; an air outlet is formed in the upper end surface of the furnace cover plate and is communicated with the cooling cavity; the air conditioner further comprises an air blocking block, and the air blocking block is used for blocking the air outlet. Compared with the prior art, the cooling device has the advantages that the wind shield is arranged, the wind shield groove higher than the cooling groove cavity in position is formed, high-temperature steam is gathered in the wind shield groove when moving upwards, space is reserved for cooling liquid, the external cooling liquid can be supplemented, meanwhile, the cooling liquid can make full contact with a panel needing to be cooled, and the cooling effect is improved. And the furnace cover plate can be continuously cooled by the cooling liquid.

Description

Technical Field

[0001] This utility model relates to the field of cooling technology for rare earth electrolytic furnaces, and in particular to a furnace platform cooling structure for an electrolytic furnace. Background Technology

[0002] Since the 1990s, the system of preparing rare earth metals by electrolyzing rare earth oxides using fluoride molten salts has gradually replaced the chloride system and has achieved industrial production. Currently, my country has developed a 15KA neodymium oxide electrolyzer, while there are reports of 24KA oxide electrolyzers operating normally abroad. However, existing rare earth electrolyzer platforms still use the ordinary steel plate structure designed in the 1960s chloride system era. This structure has many problems: First, the high temperature of the electrolysis process raises the temperature of the platform, which in turn raises the temperature of the anode conductive plate in contact with it, resulting in high node voltage and significant energy loss. At the same time, the anode conductive plate is consumed quickly at high temperatures, reducing its service life. The increased platform temperature also leads to a higher furnace atmosphere temperature, higher saturated vapor pressures of rare earth oxides, rare earth fluorides, and lithium fluoride in the molten salt, resulting in significant raw material loss. Furthermore, the high temperature of the corundum gasket, which plays an insulating role, affects its insulation effect and service life.

[0003] Chinese utility model patent CN206843605U discloses a water-cooled platform device for rare earth electrolytic cells. The base has an annular water channel on its central surface, with a water supply pipe and a return pipe on the outer side of the annular water channel. An annular inner sleeve is embedded in the inner opening of the base, and an anode plate is arranged along its inner ring. Multiple pairs of mounting gates are distributed along the annular water channel. A pressure plate passes through the mounting gates and fixes an anode conductive plate between the mounting gates, with the front end of the anode conductive plate pressing down on the anode plate. This utility model features a continuous cooling effect due to the annular water channel on the central surface of the base. The reduced temperature of the anode conductive plate lowers the node voltage, saving energy. The cooling effect of the annular water channel also reduces the furnace atmosphere temperature, minimizing raw material loss. The annular inner sleeve can be replaced as needed, extending the platform's lifespan. The front end of the anode conductive plate presses down on the anode plate, ensuring the anode plate remains stably vertical for extended periods, preventing the anode effect and further reducing energy consumption.

[0004] However, existing water-cooled platforms have defects. The annular water channel directly contacts the top surface of the platform to absorb heat and cool it down. However, since the water absorbs heat and forms steam, and the high-temperature steam rises and accumulates above the water channel, the top of the annular water channel is filled with high-temperature water vapor. What contacts the top surface of the platform is high-temperature water vapor instead of low-temperature liquid water. As a result, the liquid water cannot directly contact the top surface of the platform to absorb heat, and the cooling effect is greatly reduced. Utility Model Content

[0005] In order to solve the above-mentioned problems in the prior art, the present invention provides a furnace cooling structure for an electrolytic furnace.

[0006] A furnace platform cooling structure for an electrolytic furnace, comprising:

[0007] The furnace cover plate has an insertion hole in its center;

[0008] Multiple anode conductive components are used to mount the anode plate. The anode conductive components are arranged in a circular pattern around the outer ring of the insertion hole and extend above the insertion hole.

[0009] The furnace cover plate has a hollow structure, and the hollow part is set as a cooling chamber; the upper end face of the furnace cover plate is provided with an air outlet that communicates with the cooling chamber;

[0010] It also includes a wind deflector that blocks the air outlet.

[0011] By adopting the above technical solution, when the coolant absorbs the heat of the electrical contact panel, the liquid at the top absorbs a large amount of heat and forms high-temperature steam. The high-temperature steam is output through the vent. At this time, due to the continuous external water supply, the surface of the coolant can still contact the electrical contact panel, thereby continuously cooling the electrical contact panel and ensuring the cooling effect.

[0012] A further provision of the above technical solution is that the wind deflector is a shell structure with an opening at the lower end, and a wind deflector groove extending to the opening is provided inside, and the wind deflector groove is connected above the air outlet.

[0013] By adopting the above technical solution, the position of the wind baffle is higher than the height of the coolant. When the high-temperature steam rises, it gathers in the wind baffle, leaving space for the coolant and allowing the external coolant to be replenished, thus meeting the requirement of continuous cooling of the furnace cover plate by the coolant.

[0014] A further provision of the above technical solution is that: a windproof cover is provided on the windproof block, and the windproof cover is positioned higher than the end face of the windproof block; the windproof groove is located below the windproof cover;

[0015] The lower end face of the windbreak block is provided with an air inlet that connects to the windbreak groove and the air outlet.

[0016] A further provision of the above technical solution is that a limiting platform is provided at the bottom of the windbreak block, and the limiting platform blocks part of the opening on the lower end face of the windbreak block, so that the horizontal cross-sectional area of ​​the air inlet is smaller than the horizontal cross-sectional area of ​​the windbreak groove.

[0017] A further provision of the above technical solution is as follows: a liquid guide pipe is provided inside the cooling chamber, and an inlet pipe and an outlet pipe are provided on the liquid guide pipe. The outlet pipe extends into the windbreak groove through the air outlet.

[0018] By adopting the above technical solution, the wind deflector can be quickly filled with high-temperature steam, so as to prevent liquid coolant from entering the wind deflector and crowding out the space of high-temperature steam, thereby allowing the high-temperature steam to overflow into the cooling chamber and crowd out the space of coolant.

[0019] A further feature of the above technical solution is that a guide groove is provided on the side wall of the air inlet for limiting and guiding the output direction of the liquid outlet pipe.

[0020] A further configuration of the above technical solution is as follows: the furnace cover plate includes an electrical contact panel and a cover plate seat located below the electrical contact panel, and the cooling cavity is located between the cover plate seat and the furnace cover plate; the cooling cavity is arranged in a ring around the insertion hole.

[0021] A further provision of the above technical solution is that the cover plate seat also includes a support frame extending outward from the cooling cavity, the support frame supporting the power receiving panel and being fixed to the lower end surface of the power receiving panel.

[0022] A further provision of the above technical solution is that the anode conductive components are installed radially on the furnace cover plate, and a gap is formed between two adjacent anode conductive components. The gas outlet is located at the gap, and the gap is filled by a baffle block to cover the gas outlet.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting up a baffle plate to form a baffle groove that is higher than the cooling tank cavity, the high-temperature steam will gather in the baffle groove when it rises, leaving space for the coolant so that the external coolant can be replenished. At the same time, the coolant can fully contact the panel that needs to be cooled, so as to meet the continuous cooling of the furnace cover plate by the coolant. Attached Figure Description

[0024] Figure 1 This is an exploded structural diagram of the present invention.

[0025] Figure 2 This is an isometric sectional view of the wind deflector.

[0026] Figure 3 This is a schematic diagram of the exploded structure of the furnace cover plate.

[0027] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0028] Figure 5 for Figure 4 Enlarged structural diagram of part A in the middle.

[0029] Figure 6 This is a schematic diagram showing the location of the liquid outlet pipe on the furnace cover plate.

[0030] The attached diagram is labeled as follows: 500, furnace cover plate; 501, insertion hole; 502, mounting hole; 510, power connection panel; 511, positioning groove; 520, cover plate seat; 503, cooling chamber; 521, support rib; 504, air outlet; 505, duct groove.

[0031] 600, Anode conductive component; 610, Mounting base; 611, Electrode mounting part; 612, Extension part; 620, Terminal plate; 630, Fixing component;

[0032] 700, wind deflector block; 701, wind deflector groove; 710, wind deflector cover; 702, air inlet; 720, limiting platform;

[0033] 4. Anode plate; 5. Liquid guide pipe; 5.1. Liquid outlet pipe; 6. Support pin; 5.2. Liquid inlet pipe;

[0034] a. Electrode port. Detailed Implementation

[0035] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0036] like Figure 1-6 As shown in the figure, this embodiment discloses a furnace platform cooling structure for an electrolytic furnace.

[0037] A furnace platform cooling structure for an electrolytic furnace, comprising:

[0038] A furnace cover plate 500 is used to be installed on a rare earth electrolysis furnace, and an insertion hole 501 is provided in the center of the cover plate.

[0039] Multiple anode conductive components 600 are used to mount the anode plate 4. The anode conductive components 600 are arranged in a circular pattern around the outer ring of the insertion hole 501 and extend above the insertion hole 501.

[0040] The furnace cover plate 500 has a hollow structure, and the hollow part is set as a cooling chamber 503. The cooling chamber 503 surrounds the insertion hole 501 and is used to cool the furnace cover plate 500. The upper end face of the furnace cover plate 500 is provided with an air outlet 504 that communicates with the cooling chamber 503.

[0041] It also includes a wind deflector 700, which blocks the air outlet 504.

[0042] The above is the basic scheme of this embodiment.

[0043] Specific reference Figure 1As shown, the upper surface of the furnace cover plate 500 is set as an electrical contact panel. The coolant in the cooling chamber 503 directly contacts the electrical contact panel, absorbing the heat on the electrical contact panel and cooling it down.

[0044] When the coolant absorbs heat from the electrical panel, the liquid at the top absorbs a large amount of heat, forming high-temperature steam. The high-temperature steam is output through the vent 504. At this time, due to the continuous external water supply, the surface of the coolant can still contact the electrical panel, thereby continuously cooling the electrical panel and ensuring the cooling effect.

[0045] To prevent high-temperature steam from being output outside the furnace cover plate 500, a baffle block 700 is provided in this embodiment to stop it, so that the high-temperature steam is retained inside the baffle plate. In addition, the high-temperature steam above the outlet 504 can come into contact with the coolant below, and the coolant cools down part of the high-temperature steam, so that part of the high-temperature steam can mix into the coolant.

[0046] Preferably, in this embodiment, the coolant can be water or other liquids with good heat absorption properties.

[0047] To prevent high-temperature steam from entering the air at a level higher than the coolant level, in this embodiment, the wind deflector 700 is a shell structure with an open lower end. An internal wind deflector groove 701 extends to the opening. The wind deflector groove 701 connects above the air outlet 504. See [specific reference] for details. Figure 2 As shown.

[0048] Based on the above configuration, the position of the wind baffle 701 is higher than the height of the coolant. When the high-temperature steam rises, it gathers into the wind baffle 701, leaving space for the coolant so that the external coolant can be replenished, thus satisfying the need for the coolant to continuously cool the furnace cover plate 500.

[0049] In addition, to meet the positional requirements of the wind deflector 701, a wind deflector cover 710 is provided on the wind deflector block 700, and the wind deflector cover 710 is positioned higher than the end face of the wind deflector block 700; the wind deflector 701 is located below the wind deflector cover 710.

[0050] The lower end face of the windbreak block 700 is provided with an air inlet 702 that connects the windbreak groove 701 and the air outlet 504.

[0051] Specific reference Figure 2 As shown, in this embodiment, the wind deflector 710 protrudes from the upper end surface of the wind deflector groove 701, so that the position of the wind deflector groove 701 formed below the wind deflector 710 can be higher than the air outlet 504, and can have as much space as possible to collect high-temperature steam.

[0052] Preferably, in this embodiment, the windshield cover 710 can be integrally formed with the windshield block 700, or it can be manufactured separately and then sealed and installed onto the windshield block 700.

[0053] Preferably, in this embodiment, a limiting platform 720 is provided at the bottom of the wind deflector 700. The limiting platform 720 blocks part of the opening on the lower end face of the wind deflector 700, so that the horizontal cross-sectional area of ​​the air inlet 702 is smaller than the horizontal cross-sectional area of ​​the wind deflector groove 701.

[0054] The purpose of setting the limiting platform 720 is to reduce the area of ​​the air inlet 702, so that after the high-temperature steam enters the air inlet slot from the air inlet 702, it cannot overflow from the area of ​​the limiting platform 720, but can only overflow from the air inlet 702. Since high-temperature steam is constantly entering the air inlet 702, it counteracts the overflowing high-temperature steam, thereby reducing the escape of high-temperature steam.

[0055] Moreover, in this embodiment, a liquid guide pipe 5 is provided in the cooling chamber 503, and an inlet pipe 5.2 and an outlet pipe 5.1 are provided on the liquid guide pipe 5. The outlet pipe 5.1 extends into the wind deflector 701 through the air outlet 504.

[0056] Specific reference Figures 3-5 As shown, in this embodiment, external coolant enters the cooling chamber 503 through the liquid guide pipe 5 and flows into the wind deflector 701 from the outlet of the liquid outlet pipe 5.1. That is, the coolant preferentially enters the wind deflector 701, and part of it is rapidly vaporized to form high-temperature steam that remains in the wind deflector 701. The unvaporized part remains liquid and is output from the air outlet 504 below the wind deflector 701, entering the cooling chamber 503 to fill it.

[0057] This design allows the wind deflector 701 to be quickly filled with high-temperature steam, preventing liquid coolant from entering the wind deflector 701 and crowding out the space for high-temperature steam. This allows the high-temperature steam to overflow into the cooling chamber 503 and crowd out the space for coolant.

[0058] In order to limit the position of the liquid guide pipe 5 and prevent it from moving during operation, which would prevent high-temperature steam from entering the wind deflector 701, in this embodiment, the side wall of the air inlet 702 is provided with a guide groove 505, which is used to limit and guide the output direction of the liquid outlet pipe 5.1.

[0059] The conduit groove 505 is an inclined notch recessed on the side wall. The outlet pipe 5.1 is inserted into the notch and arranged along the inclined direction of the notch so that the output direction of the coolant is inclined upward.

[0060] In this embodiment, the furnace cover plate 500 includes an electrical contact panel 510 and a cover plate seat 520 disposed below the electrical contact panel 510. The cooling cavity 503 is disposed between the cover plate seat 520 and the furnace cover plate 500. The cover plate seat 520 is provided with a cavity wall for forming an annular groove. The cavity wall is sealed and installed on the lower end face of the electrical contact panel 510 so that the cross-sectional panel seals the upper end of the annular groove to form the cooling cavity 503. The cooling cavity 503 is arranged in an annular shape around the insertion hole 501.

[0061] During the electrolysis process in the electrolytic furnace, the heat inside the electrolytic cell is the highest, and the heat gradually decreases outward in a radial pattern. In this embodiment, the cooling chamber 503 is set as a ring structure to adapt to the temperature distribution of the electrolytic furnace, which can maximize the cooling of the electrical panel 510.

[0062] Furthermore, in this embodiment, the cavity wall not only seals the cooling cavity 503, but also provides support for the electrical panel 510, ensuring the stability of the electrical panel 510 under stress.

[0063] In this embodiment, please refer to the specific details. Figure 3 As shown, the power receiving panel 510 is configured as an approximately square structure, while the cooling cavity 503 is an annular structure. To ensure stable support for the power receiving panel 510, in this embodiment, a support frame extends outward from the outer wall of the cooling cavity 503. The outermost end of the support frame is fixed to the four corners of the power receiving panel 510 by support pins 6. Furthermore, the support frame includes support ribs 521 that connect two adjacent support pins 6 and connect the support pins 6 and the cavity wall. The upper end of the support ribs 521 abuts against the power receiving panel 510, forming support for the power receiving panel 510, thereby ensuring uniform support of the entire cover plate seat 520 for the power receiving panel 510 and enhancing the structural strength of the furnace panel.

[0064] In addition, in this embodiment, the anode conductive component 600 is installed radially on the furnace cover plate 500, and a gap is formed between two adjacent anode conductive components 600. The gas outlet 504 is located at the gap, and the gap is filled by the wind baffle block 700 to cover the gas outlet 504.

[0065] When the end of the anode conductive component 600 extends above the insertion hole 501, it blocks the edge above the insertion hole 501. After the ends of multiple anode conductive components 600 are spliced ​​together, an electrolytic hole with an inner diameter smaller than that of the insertion hole 501 is formed. A notch is formed between two adjacent extensions 612. Furthermore, because the inner diameter of the electrolytic hole is small, the part above the insertion hole 501 located between two anode conductive components 600 is not blocked, making it easy for air to enter. The electrolytic cell has a vent at the notch. A baffle block 700 is provided at the notch to cover the vent.

[0066] In this embodiment, a windbreak block 700 is provided at this location. The windbreak block 700 fills the space between the two anode conductive components 600, forming a complete windbreak plate that shields the area above the insertion hole 501 and blocks the wind from the electrolytic cell to prevent external wind blowing into the electrolytic cell from affecting the electrolysis and collection of rare earth.

[0067] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A furnace platform cooling structure for an electrolytic furnace, comprising: The furnace cover plate (500) has an insertion hole (501) in its center; Multiple anode conductive components (600) are used to mount the anode plate (4), the anode conductive components (600) are arranged in a circumferential manner around the outer ring of the insertion hole (501) and extend above the insertion hole (501); The furnace cover plate (500) is characterized by being hollow, with the hollow portion configured as a cooling chamber (503); the upper end face of the furnace cover plate (500) is provided with an air outlet (504) that communicates with the cooling chamber (503); It also includes a wind deflector (700) that blocks the air outlet (504).

2. The furnace platform cooling structure of the electrolytic furnace according to claim 1, characterized in that: The wind deflector (700) is a shell structure with an opening at the lower end, and a wind deflector groove (701) extending to the opening is provided inside. The wind deflector groove (701) is connected above the air outlet (504).

3. The furnace platform cooling structure of the electrolytic furnace according to claim 2, characterized in that: The wind deflector block (700) is provided with a wind deflector cover (710), and the wind deflector cover (710) is positioned higher than the end face of the wind deflector block (700); the wind deflector groove (701) is located below the wind deflector cover (710); The lower end face of the wind deflector (700) is provided with an air inlet (702) that connects the wind deflector groove (701) and the air outlet (504).

4. The furnace platform cooling structure of the electrolytic furnace according to claim 3, characterized in that: The bottom of the wind deflector (700) is provided with a limiting platform (720), which blocks part of the opening on the lower end face of the wind deflector (700) so that the horizontal cross-sectional area of ​​the air inlet (702) is smaller than the horizontal cross-sectional area of ​​the wind deflector groove (701).

5. The furnace platform cooling structure of the electrolytic furnace according to claim 3, characterized in that: The cooling chamber (503) is provided with a liquid guide pipe (5), and the liquid guide pipe (5) is provided with a liquid inlet pipe (5.2) and a liquid outlet pipe (5.1). The liquid outlet pipe (5.1) extends into the wind baffle groove (701) through the air outlet (504).

6. The furnace platform cooling structure of the electrolytic furnace according to claim 5, characterized in that: The air inlet (702) has a guide groove on its side wall for limiting and guiding the output direction of the liquid outlet pipe (5.1).

7. The furnace platform cooling structure of the electrolytic furnace according to claim 1, characterized in that: The furnace cover plate (500) includes an electrical contact panel (510) and a cover plate seat (520) located below the electrical contact panel (510). The cooling cavity (503) is located between the cover plate seat (520) and the furnace cover plate (500). The cooling cavity (503) is arranged in a ring around the insertion hole (501).

8. The furnace platform cooling structure of the electrolytic furnace according to claim 7, characterized in that: The cover plate seat (520) also includes a support frame extending outward from the cooling cavity (503), the support frame supporting the power receiving panel (510) and fixed to the lower end surface of the power receiving panel (510).

9. The furnace platform cooling structure of the electrolytic furnace according to claim 1, characterized in that: The anode conductive components (600) are radially mounted on the furnace cover plate (500), and a gap is formed between two adjacent anode conductive components (600). The gas outlet (504) is located at the gap, and the gap is filled by the wind baffle block (700) to cover the gas outlet (504).

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