A rare earth metal electrolytic cell

Abstract

The present invention belongs to the technical field of rare earth metal production equipment, and provides a rare earth metal electrolytic cell, including a cell body, a crucible is arranged at the bottom of the cell body, and also includes: a slag receiving trough, which is sleeved on the crucible, and has a slag storage cavity, and the bottom side wall of the slag storage cavity is provided with a filter hole; and a taking and placing device, which is used to take the slag receiving trough out of the cell body or put the slag receiving trough into the cell body; wherein, a slag guiding slope is arranged at the bottom of the cell body, and the height of the slag guiding slope gradually decreases from the inner wall of the cell body to the direction of the slag receiving trough, and the lower part of the slag guiding slope is higher than the outer side wall of the slag receiving trough or keeps flush with the outer side wall of the slag receiving trough. The rare earth metal electrolytic cell provided by the present invention has a simple structure, and impurities generated by slag receiving during the electrolysis process will not enter the crucible, and the quality of the rare earth metal obtained by electrolysis is high.

Description

Technical Field

[0001] The invention relates to the technical field of rare earth metal production devices, and in particular to a rare earth metal electrolytic cell. Background Art

[0002] like Figure 1 As shown, a rare earth metal electrolytic cell in the prior art comprises a cell body 100, a crucible 200 (e.g., a molybdenum crucible) disposed at the bottom of the cell body, and a cathode rod 500 and an anode plate 600 disposed in the cell body 100. When in use, the rare earth metal raw material is put into the molten salt (e.g., fluoride molten salt) in the cell body 100. Under the action of high temperature, the rare earth metal oxide becomes molten, thereby becoming rare earth metal cations and corresponding anions (e.g., chloride ions and oxygen ions, etc.). Under the action of a direct current electric field, the rare earth metal cations move to the cathode rod 500 and obtain electrons at the cathode rod 500, becoming rare earth metal atoms, thereby precipitating rare earth metals, which then fall into the crucible 200 below.

[0003] However, the rare earth metal electrolysis cell in the prior art has steps at the crucible 200 and the cell body 100. Since the temperature at the steps is relatively low and the rare earth metal raw materials themselves contain infusible substances, slagging is easily generated at the steps. When the staff stirs the furnace, impurities generated by slagging in the cell body 100 can easily fall into the crucible 200, contaminating the electrolyzed rare earth metal and affecting the quality of the electrolyzed rare earth metal. Summary of the invention

[0004] In view of the defects in the prior art, the object of the present invention is to provide a rare earth metal electrolytic cell to solve or alleviate the above-mentioned technical problems existing in the prior art.

[0005] In order to achieve the above object, the present invention provides a rare earth metal electrolysis cell, comprising a cell body, a crucible is arranged at the bottom of the cell body, and further comprising:

[0006] A slag receiving trough, which is sleeved on the crucible and has a slag storage cavity, and a bottom side wall of the slag storage cavity is provided with a filtering hole; and

[0007] A taking and placing device, used for taking the slag receiving trough out of the trough body or putting the slag receiving trough into the trough body;

[0008] Among them, a slag guiding slope is provided at the bottom of the trough body, and the height of the slag guiding slope gradually decreases from the inner wall of the trough body toward the slag receiving trough, and the lower part of the slag guiding slope is higher than the outer side wall of the slag receiving trough or remains flush with the outer side wall of the slag receiving trough.

[0009] Furthermore, the pick-and-place device comprises:

[0010] A base, which is arranged on one side of the tank body;

[0011] A rotating seat, which is rotatably connected to the base;

[0012] A pick-and-place arm, which is escalably disposed on the rotating seat;

[0013] A grabbing assembly, which is arranged on the pick-and-place arm and has a grabbing state capable of grabbing the slag receiving groove and a releasing state capable of releasing the slag receiving groove;

[0014] A first driving assembly, which is used to drive the rotating seat to rotate; and

[0015] The second driving assembly is used to drive the pick-and-place arm to perform lifting motion.

[0016] Furthermore, the grabbing component comprises:

[0017] a gripping element, which is disposed at the bottom end of the pick-and-place arm and has a first position and a second position, wherein when the gripping element is in the first position, the gripping element cannot cooperate with the inner side wall of the slag receiving trough, and when the gripping element is in the second position, the gripping element can cooperate with the inner side wall of the slag receiving trough; and

[0018] The third driving structure is arranged on the pick-and-place arm and is transmission-connected with the grasping element. When grasping the slag trough, the third driving structure drives the grasping element from the first position to the second position. When releasing the slag trough, the third driving structure drives the grasping element from the second position to the first position.

[0019] Furthermore, the third driving structure includes:

[0020] a turntable, which is rotatably disposed in the pick-and-place arm and is rotatably connected to the pick-and-place arm; and

[0021] A third motor is fixedly mounted on the pick-and-place arm, and a power output shaft thereof is drivingly connected to a power input shaft of the turntable to drive the turntable to rotate;

[0022] There are multiple grasping elements, which are evenly arranged around the axis of the turntable. The grasping elements are slidably connected to the pick-and-place arms so that the grasping elements can only move radially along the turntable. A sliding portion is provided at one end of the grasping element facing the axis of the turntable, and a guide groove matching the sliding portion is correspondingly provided on the turntable.

[0023] Furthermore, the inner side wall of the slag receiving groove is provided with a limiting groove matching with the grabbing element.

[0024] Furthermore, the first driving assembly includes a first motor, which is fixedly disposed on the base, and a power output shaft of the first motor is drivingly connected to a power input shaft of the rotating seat to drive the rotating seat to rotate.

[0025] Furthermore, the power output shaft of the first motor is coaxially sleeved with a first gear, and the power input shaft of the rotating seat is coaxially sleeved with a second gear meshing with the first gear.

[0026] Furthermore, the second driving component comprises:

[0027] A lead screw, which is rotatably arranged on the rotating seat;

[0028] A nut, which is sleeved on the lead screw and is drivingly connected to the lead screw;

[0029] A second motor is fixedly mounted on the rotating seat, and a power output shaft thereof is drivingly connected to a power input end of the lead screw to drive the lead screw to rotate;

[0030] The pick-and-place arm is L-shaped, with a first end of the pick-and-place arm fixedly connected to the nut and a second end extending downward.

[0031] Furthermore, a third gear is coaxially sleeved on the power output shaft of the second motor, and a fourth gear meshing with the third gear is coaxially sleeved on the power input end of the lead screw.

[0032] Beneficial effects of the present invention:

[0033] The rare earth metal electrolytic cell provided by the present invention achieves the purpose of preventing impurities from falling into the crucible by arranging a slag receiving groove and a slag guiding slope for guiding impurities into the slag receiving groove at the bottom of the cell body, thereby achieving the purpose of improving the quality of the electrolyzed rare earth metal. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0035] Figure 1 A structural view of a rare earth metal electrolytic cell in the prior art;

[0036] Figure 2 A three-dimensional view of a rare earth metal electrolytic cell provided by one embodiment of the present invention;

[0037] Figure 3 for Figure 2A cross-sectional view of a rare earth metal electrolytic cell is shown;

[0038] Figure 4 for Figure 3 An enlarged view of section A is shown;

[0039] Figure 5 for Figure 3 An enlarged view of section B is shown;

[0040] Figure 6 for Figure 3 An enlarged view of section C is shown;

[0041] Figure 7 for Figure 3 An enlarged view of section D is shown;

[0042] Figure 8 for Figure 3 An enlarged view of section E is shown;

[0043] Fig. 9 for Figure 2 A combined three-dimensional view of a grab assembly and a slag receiving trough of a rare earth metal electrolytic cell is shown.

[0044] Reference numerals:

[0045] 100, trough body; 110, slag guiding slope; 200, crucible; 300, slag receiving trough; 310, slag storage chamber; 320, filter hole; 330, limit groove; 410, base; 420, rotating seat; 421, support column; 430, pick-up and place arm; 441, grab element; 401, sliding part; 442, turntable; 402, guide groove; 443, third motor; 444, fifth gear; 445, sixth gear; 451, first motor; 452, second gear; 453, first gear; 461, lead screw; 462, nut; 463, second motor; 464, third gear; 465, fourth gear; 500, cathode rod; 600, anode plate. DETAILED DESCRIPTION

[0046] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0047] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0048] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0049] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0050] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0052] like Figure 1 As shown, a rare earth metal electrolysis cell includes a cell body 100 , a crucible 200 (eg, a molybdenum crucible 200 ) is disposed at the bottom of the cell body 100 , wherein the crucible 200 is used to receive the rare earth metal electrolyzed, and a cathode rod 500 and an anode plate 600 are disposed in the cell body 100 .

[0053] When in use, the raw materials of rare earth metals are put into the molten salt (for example, fluoride molten salt) in the electrolytic cell. Under the action of high temperature, the rare earth metal oxides become molten, thereby becoming rare earth metal cations and corresponding anions (for example, chloride ions, oxygen ions, etc.). Under the action of the DC electric field, the rare earth metal cations move to the cathode rod 500 and obtain electrons at the cathode rod 500 to become rare earth metal atoms, thereby precipitating rare earth metals. The precipitated rare earth metals fall into the molybdenum crucible 200 below, and the anions move to the anode plate 600 and lose electrons to become corresponding gas molecules (for example, oxygen, chlorine, etc.). These are all existing technologies and will not be described in detail here.

[0054] like Figure 2-9 As shown, a rare earth metal electrolysis cell provided by the present invention includes a cell body 100, a crucible 200 is arranged at the bottom of the cell body 100, wherein the crucible 200 is used to receive the rare earth metal electrolyzed, and a cathode rod (not shown in the drawings) and an anode plate (not shown in the drawings) are arranged in the cell body 100.

[0055] like Figure 2 , 3 As shown in Figures 7 and 7, a rare earth metal electrolytic cell provided by the present invention further includes a slag receiving tank 300 and a taking and placing device.

[0056] The slag receiving trough 300 is sleeved on the crucible 200 and has a slag storage chamber 310. The bottom side wall of the slag storage chamber 310 is provided with a filter hole 320. The taking and placing device is used to take the slag receiving trough 300 out of the tank body 100 or put the slag receiving trough 300 into the tank body 100.

[0057] Among them, a slag guiding slope 110 is provided at the bottom of the trough body 100, and the height of the slag guiding slope 110 gradually decreases from the inner wall of the trough body 100 toward the slag connecting trough 300, and the lower part of the slag guiding slope 110 is higher than the outer side wall of the slag connecting trough 300 or remains flush with the outer side wall of the slag connecting trough 300, so that the slag guiding slope 110 can introduce impurities generated by slagging during the electrolysis process into the slag connecting trough 300.

[0058] During operation, when the worker stirs the furnace, impurities fall into the slag receiving trough 300 along the slag guiding slope 110, so that the impurities are not easy to fall into the crucible 200, thereby achieving the purpose of improving the quality of the rare earth metal electrolyzed. When the impurities in the slag receiving trough 300 are deposited to a certain extent, the taking and placing device takes the slag receiving trough 300 out of the tank body 100 to clean the impurities, and puts the slag receiving trough 300 after the impurities are cleaned back into the tank body 100.

[0059] Preferably, the top of the inner side wall of the slag receiving trough 300 is higher than the top of the side wall of the crucible 200 to prevent impurities from falling into the crucible 200 and facilitate the picking and placing device to grab the slag receiving trough 300.

[0060] like Figure 2 , 3 As shown, the pick-and-place device includes a base 410, a rotating base 420, a pick-and-place arm 430, a gripping assembly, a first driving assembly, and a second driving assembly.

[0061] The base 410 is fixed to one side of the tank body 100. The rotating seat 420 is rotatably connected to the base 410. The pick-up and placement arm 430 is arranged on the rotating seat 420 in a manner that it can be raised and lowered. The grabbing assembly is arranged on the pick-up and placement arm 430, and the grabbing assembly has a grabbing state capable of grabbing the slag receiving trough 300 and a releasing state for releasing the slag receiving trough 300. When grabbing, the grabbing assembly is placed in the grabbing state to grab the slag receiving trough 300; when placing, the grabbing assembly is placed in the releasing state to place the slag receiving trough 300.

[0062] The first driving assembly is used to drive the base 410 to rotate so as to change the orientation of the pick-and-place arm 430. Specifically, in the process of taking out the slag trough 300, the first driving assembly drives the rotating seat 420 to rotate, thereby moving the slag trough 300 to a target position, so as to facilitate cleaning of impurities in the slag trough 300. In the process of placing the slag trough 300, the first driving assembly drives the rotating seat 420 to rotate, so as to move the grabbing arm to the top of the trough body 100.

[0063] The second driving assembly is used to drive the pick-up and place arm 430 to move up and down, so that the pick-up and place arm 430 can be extended into or removed from the tank body 100. Specifically, in the process of taking out the slag receiving trough 300, the second driving assembly drives the pick-up and place arm 430 to rise to take the slag receiving trough 300 out of the tank body 100; in the process of placing the slag receiving trough 300, the second driving assembly drives the pick-up and place arm 430 to descend to place the slag receiving trough 300 into the tank body 100.

[0064] Specifically, in the process of taking out the slag receiving trough 300, first, the first driving component drives the rotating seat 420 to rotate so as to move the pick-up and placement arm 430 to the top of the trough body 100; then, the second driving component drives the pick-up and placement arm 430 to descend so that the pick-up and placement arm 430 extends into the trough body 100; when the pick-up and placement arm 430 moves to the target position, the grasping component is switched from the release state to the grasping state, so as to grasp the slag receiving trough 300; then, the second driving component drives the pick-up and placement arm 430 to rise so as to move the driving arm out of the trough body 100; then, the first driving component drives the rotating seat 420 to rotate so as to move the pick-up and placement arm 430 to the slag removal position; then, the grasping component is switched from the grasping state to the release state, so as to place the slag receiving trough 300 in the slag removal position, thereby facilitating slag removal.

[0065] The process of placing the slag receiving trough 300 into the trough body 100 is opposite to the process of taking the slag receiving trough 300 out of the trough body 100, and will not be described in detail here.

[0066] The rare earth metal electrolytic cell provided by the present invention achieves the purpose of preventing impurities from falling into the crucible 200 by arranging a slag receiving groove 300 and a slag guiding slope 110 for guiding impurities into the slag receiving groove 300 at the bottom of the cell body 100, thereby achieving the purpose of improving the quality of the electrolyzed rare earth metal.

[0067] like Figure 3 , 6 As shown in Figure 9, the grabbing assembly includes a grabbing element 441 and a third driving structure.

[0068] The grabbing element 441 is arranged at the bottom end of the pick-and-place arm 430, and the grabbing element 441 has a first position and a second position. When the grabbing element 441 is in the first position, the grabbing element 441 cannot cooperate with the inner side wall of the slag receiving groove 300, thereby achieving the purpose of placing the slag receiving groove 300; when the grabbing element 441 is in the second position, the grabbing element 441 can cooperate with the inner side wall of the slag receiving groove 300, thereby achieving the purpose of grabbing the slag receiving groove 300. The third driving structure is used to drive the grabbing element 441 to move, so that the grabbing assembly switches between the grabbing state and the release state.

[0069] During grabbing, the third driving structure drives the grabbing element 441 from the first position to the second position to grab the slag receiving groove 300 ; during placement, the third driving structure drives the grabbing element 441 from the second position to the first position to release the slag receiving groove 300 .

[0070] like Figure 3 , 8 As shown, the first driving assembly includes a first motor 451 .

[0071] The first motor 451 is fixedly arranged on the base 410. The power output shaft of the first motor 451 is connected to the power input shaft of the rotating seat 420 to drive the rotating seat 420 to rotate. Specifically, the power output shaft of the first motor 451 is coaxially sleeved with a first gear 453. The power input shaft of the rotating seat 420 is coaxially sleeved with a second gear 452 meshing with the first gear 453.

[0072] When in use, the first motor 451 drives the first gear 453 to rotate, and the first gear 453 drives the second gear 452 to rotate, thereby achieving the purpose of driving the rotating seat 420 to rotate. The structure is simple and it is easy to control the rotation of the rotating seat 420.

[0073] like Figure 3 , 5As shown, the second driving assembly includes a lead screw 461 , a nut 462 and a second motor 463 .

[0074] The lead screw 461 is rotatably arranged on the rotating seat 420. Specifically, a support column 421 extending in the longitudinal direction is arranged on the top of the rotating seat 420, and the lead screw 461 is arranged in the support column 421 and is rotatably connected with the support column 421. The nut 462 is sleeved on the lead screw 461 and is transmission-connected with the lead screw 461, so that when the lead screw 461 rotates, the nut 462 can be driven to move. The pick-and-place arm 430 is L-shaped, and the first end of the pick-and-place arm 430 is fixedly connected with the nut 462 and the second end extends downward. The second motor 463 is fixedly arranged on the rotating seat 420, and the power output shaft of the second motor 463 is transmission-connected with the power input end of the lead screw 461 to drive the lead screw 461 to rotate. Specifically, the power output shaft of the second motor 463 is coaxially sleeved with a third gear 464, and the power input end of the lead screw 461 is coaxially sleeved with a fourth gear 465 meshing with the third gear 464.

[0075] When in use, the second motor 463 drives the third gear 464 to rotate, the third gear 464 drives the fourth gear 465 to rotate, the fourth gear 465 drives the lead screw 461 to rotate, and the lead screw 461 drives the nut 462 to move linearly along its own axis. Specifically, when the lead screw 461 rotates in the forward direction, the lead screw 461 drives the nut 462 to rise; when the lead screw 461 rotates in the reverse direction, the lead screw 461 drives the nut 462 to fall, so that the second motor 463 drives the lead screw 461 to rotate, thereby achieving the purpose of driving the pick-and-place arm 430 to move up and down. The structure is simple, and the drive is reliable and stable through the cooperation of the lead screw 461 and the nut 462.

[0076] like Figure 3 , 4 As shown in , 6 and 9 , the third driving structure includes a turntable 442 and a third motor 443 .

[0077] The turntable 442 is rotatably disposed in the pick-and-place arm 430 and is rotatably connected to the pick-and-place arm 430. The third motor 443 is fixedly disposed on the pick-and-place arm 430, and the power output shaft of the third motor 443 is transmission-connected to the power input shaft of the turntable 442 to drive the turntable 442 to rotate. Specifically, the power output shaft of the third motor 443 is coaxially sleeved with a fifth gear 444, and the power input shaft of the turntable 442 is coaxially sleeved with a sixth gear 445 meshing with the fifth gear 444.

[0078] There are multiple gripping elements 441, which are evenly arranged around the axis of the rotating disk 442. The gripping elements 441 are slidably connected to the pick-and-place arm 430, so that the gripping elements 441 can only move radially along the rotating disk 442. A sliding portion 401 is provided at one end of the gripping element 441 facing the axis of the rotating disk 442, and a guide groove 402 matching the sliding portion 401 is correspondingly provided on the rotating disk 442, so that when the rotating disk 442 rotates, the rotating disk 442 can apply a force to the sliding portion 401 through the guide groove 402, thereby driving the gripping element 441 to move. Specifically, when the turntable 442 rotates forward, with the cooperation of the guide groove 402 and the sliding part 401, the turntable 442 drives the grasping element 441 to move from the first position to the second position; when the turntable 442 rotates reversely, with the cooperation of the guide groove 402 and the sliding part 401, the turntable 442 drives the grasping element 441 to move from the second position to the first position.

[0079] When in use, during the process of grabbing the slag trough 300, the third motor 443 drives the turntable 442 to rotate forward, and with the cooperation of the guide groove 402 and the sliding part 401, the turntable 442 drives the grabbing element 441 to move from the first position to the second position, so that the grabbing element 441 can cooperate with the side wall of the slag trough 300, thereby achieving the purpose of grabbing the slag trough 300.

[0080] During the process of placing the slag trough 300, the third motor 443 drives the turntable 442 to rotate in the opposite direction. With the cooperation of the guide groove 402 and the sliding part 401, the turntable 442 drives the grabbing element 441 to move from the second position to the first position, so that the grabbing element 441 cannot cooperate with the side wall of the slag trough 300, thereby achieving the purpose of releasing the slag trough 300. The structure is simple, and through the cooperation of the guide groove 402 and the sliding part 401, the drive is reliable and stable.

[0081] In this embodiment, the guide groove 402 is arc-shaped, and the sliding portion 401 is a sliding latch.

[0082] Preferably, the inner side wall of the slag receiving groove 300 is provided with a limit groove 330 that matches with the grabbing element 441, so as to achieve the purpose of improving the grabbing effect. Preferably, the limit groove 330 is slightly larger than the end of the grabbing element 441 that matches with the limit groove 330, so that the grabbing element 441 can be inserted into the limit groove 330.

[0083] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A rare earth metal electrolysis cell, comprising a cell body (100), wherein a crucible (200) is arranged at the bottom of the cell body (100), characterized in that: Also includes: a slag receiving trough (300) which is sleeved on the crucible (200) and has a slag storage cavity (310), wherein a bottom side wall of the slag storage cavity (310) is provided with a filtering hole (320); and A taking and placing device, used for taking the slag receiving trough (300) out of the trough body (100) or placing the slag receiving trough (300) into the trough body (100); A slag guiding slope (110) is provided at the bottom of the trough body (100), the height of the slag guiding slope (110) gradually decreases from the inner wall of the trough body (100) toward the slag receiving trough (300), and the lower part of the slag guiding slope (110) is higher than the outer side wall of the slag receiving trough (300) or remains flush with the outer side wall of the slag receiving trough (300); The pick-and-place device comprises: A base (410) disposed on one side of the tank body (100); A rotating seat (420) rotatably connected to the base (410); A pick-and-place arm (430) which is liftably disposed on the rotating seat (420); A grabbing assembly, which is arranged on the pick-and-place arm (430) and has a grabbing state capable of grabbing the slag receiving groove (300) and a releasing state capable of releasing the slag receiving groove (300); A first driving assembly, used for driving the rotating seat (420) to rotate; and A second driving assembly is used to drive the pick-and-place arm (430) to perform lifting motion.

2. The rare earth metal electrolytic cell according to claim 1, characterized in that: The grabbing component comprises: a gripping element (441) disposed at the bottom end of the pick-and-place arm (430), having a first position and a second position, wherein when the gripping element (441) is in the first position, the gripping element (441) cannot cooperate with the inner side wall of the slag receiving groove (300), and when the gripping element (441) is in the second position, the gripping element (441) can cooperate with the inner side wall of the slag receiving groove (300); and A third driving structure is arranged on the pick-and-place arm (430) and is transmission-connected to the grasping element (441). When grasping the slag receiving groove (300), the third driving structure drives the grasping element (441) from the first position to the second position. When releasing the slag receiving groove (300), the third driving structure drives the grasping element (441) from the second position to the first position.

3. The rare earth metal electrolytic cell according to claim 2, characterized in that: The third driving structure comprises: a rotating disk (442) rotatably disposed in the pick-and-place arm (430) and rotatably connected to the pick-and-place arm (430); and A third motor (443) is fixedly mounted on the pick-and-place arm (430), and a power output shaft thereof is drivingly connected to a power input shaft of the rotating disk (442) to drive the rotating disk (442) to rotate; There are multiple gripping elements (441), which are evenly arranged around the axis of the turntable (442). The gripping elements (441) are slidably connected to the pick-and-place arm (430) so that the gripping elements (441) can only move radially along the turntable (442). A sliding portion (401) is provided at one end of the gripping element (441) facing the axis of the turntable (442), and a guide groove (402) matching the sliding portion (401) is correspondingly provided on the turntable (442).

4. The rare earth metal electrolytic cell according to claim 3, characterized in that: The inner side wall of the slag receiving groove (300) is provided with a limiting groove (330) that matches the grabbing element (441).

5. The rare earth metal electrolytic cell according to any one of claims 1 to 4, characterized in that: The first driving assembly comprises a first motor (451), the first motor (451) being fixedly arranged on the base (410), and the power output shaft of the first motor (451) being drivingly connected to the power input shaft of the rotating seat (420) to drive the rotating seat (420) to rotate.

6. The rare earth metal electrolytic cell according to claim 5, characterized in that: The power output shaft of the first motor (451) is coaxially sleeved with a first gear (453), and the power input shaft of the rotating seat (420) is coaxially sleeved with a second gear (452) meshing with the first gear (453).

7. The rare earth metal electrolytic cell according to any one of claims 1, 2, 3, 4 or 6, characterized in that: The second driving assembly comprises: A lead screw (461) rotatably disposed on the rotating seat (420); a nut (462), which is sleeved on the lead screw (461) and is drivingly connected to the lead screw (461); A second motor (463) is fixedly mounted on the rotating seat (420), and a power output shaft thereof is drivingly connected to a power input end of the lead screw (461) to drive the lead screw (461) to rotate; The pick-and-place arm (430) is L-shaped, with a first end of the pick-and-place arm (430) being fixedly connected to the nut (462) and a second end extending downward.

8. The rare earth metal electrolytic cell according to claim 7, characterized in that: The power output shaft coaxial sleeve of the second motor (463) is provided with a third gear (464), and the power input end coaxial sleeve of the lead screw (461) is provided with a fourth gear (465) meshing with the third gear (464).

Images