Rare earth molten salt electrolysis device

Abstract

The utility model relates to the field of rare earth production devices, in particular to a rare earth molten salt electrolysis device which comprises a bottom plate, an electrolytic bath is fixed to the bottom plate, a top cover is arranged at the top of the electrolytic bath, an inlet hole is formed in the top cover, a lifting motor is further fixed to the bottom plate, and a screw is fixed to the output end of the lifting motor. A plurality of sliding rods are further fixed to the bottom plate, a sliding plate is further arranged above the bottom plate, a threaded pipe is fixed to the sliding plate, the screw penetrates through the threaded pipe and is in threaded connection with the threaded pipe, the sliding rods penetrate through the sliding plate and are in sliding connection with the sliding plate, a rotating disc is arranged on the sliding plate, and the rotating disc is driven by a rotating motor to rotate. Fixing devices are further symmetrically fixed to the two sides of the rotary disc, each fixing device comprises a positioning plate fixed to the rotary disc, and a positioning ring is fixed to each positioning plate. According to the device, electrolysis can be started without waiting for a new cathode bar to be fixed after the cathode bar subjected to electrolysis is taken down, and the rare earth molten salt electrolysis efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of rare earth production equipment, and more particularly to a rare earth molten salt electrolysis device. Background Technology

[0002] Molten salt electrolysis is one of the important methods for preparing rare earth metals and their alloys. Currently, the chloride molten salt electrolysis method is mainly used industrially. Under the action of direct current, rare earth ions in the rare earth-containing molten salt electrolyte gain electrons at the cathode of the electrolytic cell and are reduced to metals, while chlorine gas is released at the anode. The equipment used is mainly medium-sized electrolytic cells of 3000-8000 amps and large electrolytic cells of 10,000 amps or more. During the electrolysis process, the cathode rod needs to be inserted into the electrolyte for the electrolytic reaction. As the electrolysis progresses, the diameter of the end of the cathode rod inserted into the electrolyte gradually decreases and the end gradually dissolves, resulting in a decrease in current efficiency and an increase in energy consumption. Therefore, it is necessary to continuously adjust the insertion depth of the cathode in the molten salt electrolyte to achieve stable control of the rare earth electrolysis process. Patent application number: CN202021767088.7 discloses a lifting rare earth molten salt electrolytic cell cathode device, including a mounting frame for connecting to the electrolytic cell. The mounting frame consists of a left mounting body and a right mounting body that are detachably and fixedly connected to form a ring structure. A bracket is fixed to the right end of the right mounting body. The bracket is equipped with a lifting mechanism, which has a slidable horizontal arm. The horizontal arm is fixed with a clamping mechanism, which includes a fixed clamping component. The right front end of the fixed clamping component is hinged to a suitable movable clamping component. The fixed clamping component is slidably positioned with a slide rod extending from the front and rear ends of the fixed clamping component. The slide rod and the movable clamping component are slidably connected left and right. A clamping cavity is provided between the fixed clamping component and the movable clamping component. The fixed clamping component and the movable clamping component clamp and install the cathode rod in the clamping cavity. Rare earth electrolysis is performed by cooperating with the electrolytic cell through the cathode rod. However, after electrolysis for a certain period of time, when the size of the cathode rod affects the electrolysis efficiency, the cathode rod needs to be replaced for electrolysis. This type of device requires removing the electrolyzed cathode rod and reinstalling a new cathode rod before electrolysis can continue, which affects the electrolysis efficiency.

[0003] This invention was developed to address the shortcomings of existing technologies. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rare earth molten salt electrolysis device.

[0005] This invention can be achieved through the following technical solutions:

[0006] This invention discloses a rare earth molten salt electrolysis device, comprising a base plate, an electrolytic cell fixed on the base plate, a top cover on the top of the electrolytic cell, an inlet hole on the top cover, a lifting motor fixed on the base plate, a screw fixed at the output end of the lifting motor, multiple sliding rods fixed on the base plate, a sliding plate above the base plate, a threaded tube fixed on the sliding plate, the screw passing through the threaded tube and threadedly connected to the threaded tube, the sliding rods passing through the sliding plate and slidably connected to the sliding plate, a turntable on the sliding plate, the turntable being driven to rotate by a rotary motor, and symmetrically fixed devices on both sides of the turntable, each fixing device comprising a positioning plate fixed on the turntable, a positioning ring fixed on the positioning plate, a fixing plate on one side of the positioning plate, a fixing ring fixed on the fixing plate, a threaded post fixed on the positioning plate, the threaded post passing through the fixing plate and slidably connected to the fixing plate, and a nut threadedly connected to the threaded post at its end. A cathode rod is placed between the fixed ring and the positioning ring. The corresponding nut is rotated, moving along the threaded post. After the fixed ring secures the cathode rod to the positioning ring, the lifting motor drives the screw to rotate. As the screw rotates, the slide plate rises, and the cathode rod rises with it. Once the cathode rod reaches above the top cover, the rotary motor drives the turntable to rotate 180 degrees, bringing the cathode rod above the inlet hole. The lifting motor then drives the screw to rotate in the opposite direction, causing the slide plate to descend. The cathode rod passes through the inlet hole and is inserted into the electrolytic cell. The cathode rod, in conjunction with the anode plate inside the electrolytic cell, electrolyzes the electrolyte. The molten metal collects in the crucible at the bottom of the electrolytic cell. During electrolysis, the cathode rod gradually decreases in volume. The descending slide plate ensures the cathode rod's volume within the electrolytic cell remains constant. After the cathode rod descends to the designated position, a new cathode rod is fixed on another fixing device on the turntable. When it is necessary to remove the cathode rod from the electrolytic cell, the lifting motor drives the screw to rotate in the opposite direction, and the slide plate rises. When the slide plate rises to the designated height, the rotary motor drives the turntable to rotate 180 degrees again, and the new cathode rod reaches the inlet position again. The new cathode rod is then inserted into the electrolytic cell for electrolysis. This process is repeated. This device can generate rare earth metals through molten salt electrolysis. Furthermore, when it is necessary to replace the cathode rod, a new cathode rod is fixed on the turntable and inserted into the electrolytic cell for electrolysis. There is no need to wait for the cathode rod to be removed after electrolysis is completed before fixing the new cathode rod to start electrolysis, which greatly improves the efficiency of rare earth molten salt electrolysis.

[0007] Preferably, the fixing plate is further fixed with multiple positioning rods, which pass through the positioning plate and are slidably connected to it.

[0008] Preferably, a gear ring is fixed on the turntable, the rotary motor is fixed on the slide plate, and a gear is fixed at the output end of the rotary motor, the gear meshing with the gear ring.

[0009] Preferably, a support tube is also fixed on the base plate, and the support tube is provided with a support hole. When fixing the cathode rod, the bottom of the cathode rod is inserted into the support hole of the support tube, and the support tube supports the cathode rod to ensure that it is in a vertical state, thus fixing the cathode rod between the positioning ring and the fixing ring.

[0010] Compared with existing technologies, the present invention has the following advantages:

[0011] This device uses a spiral blade to move rare earth elements in a solution, allowing them to collide and mix, thus achieving rapid dissolution. Furthermore, by using a water pump to extract the solution, a water flow can be formed to flush the rare earth elements, effectively accelerating the dissolution process. Attached Figure Description

[0012] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0013] Figure 1 This is a schematic diagram of the structure of the present invention;

[0014] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0015] In the diagram: 1. Base plate; 2. Electrolytic cell; 3. Top cover; 4. Entry hole; 5. Lifting motor; 6. Screw; 7. Slide rod; 8. Slide plate; 9. Turntable; 10. Cathode rod; 11. Fixing device; 12. Positioning ring; 13. Positioning plate; 14. Fixing plate; 15. Fixing ring; 16. Threaded column; 17. Nut; 18. Positioning rod; 19. Gear ring; 20. Gear; 21. Rotary motor; 22. Support tube; 23. Support hole; Detailed Implementation

[0016] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings:

[0017] 1 was implemented:

[0018] like Figures 1 to 2As shown, this embodiment discloses a rare earth molten salt electrolysis device, including a base plate 1, an electrolysis cell 2 fixed on the base plate 1, a top cover 3 on the top of the electrolysis cell 2, an inlet hole 4 on the top cover 3, a lifting motor 5 fixed on the base plate 1, a screw 6 fixed at the output end of the lifting motor 5, multiple sliding rods 7 fixed on the base plate 1, a sliding plate 8 above the base plate 1, a threaded tube fixed on the sliding plate 8, the screw 6 passing through the threaded tube and threadedly connected to the threaded tube, the sliding rods 7 passing through the sliding plate 8 and slidably connected to the sliding plate 8, and a sliding plate 8 having a... There is a turntable 9, which is driven to rotate by a rotary motor 21. On both sides of the turntable 9, there are also symmetrical fixing devices 11. The fixing devices 11 include a positioning plate 13 fixed on the turntable 9. A positioning ring 12 is fixed on the positioning plate 13. A fixing plate 14 is also provided on one side of the positioning plate 13. A fixing ring 15 is fixed on the fixing plate 14. A threaded post 16 is also fixed on the positioning plate 13. The threaded post 16 passes through the fixing plate 14 and is slidably connected to the fixing plate 14. A nut 17 is provided at the end of the threaded post 16 and is threadedly connected to the threaded post 16. A cathode rod 10 is placed between a fixed ring 15 and a positioning ring 12. The corresponding nut 17 is rotated, moving on a threaded post 16. After the fixed ring 15 secures the cathode rod 10 to the positioning ring 12, the lifting motor 5 drives the screw 6 to rotate. As the screw 6 rotates, the slide plate 8 rises, and the cathode rod 10 rises with it. After the cathode rod 10 rises above the top cover 3, the rotary motor 21 drives the turntable 9 to rotate 180 degrees, bringing the cathode rod 10 above the inlet hole 4. The lifting motor 5 then drives the screw 6 to rotate in the opposite direction, causing the slide plate 8 to descend. The cathode rod 10 passes through the inlet hole 4 and is inserted into the electrolytic cell 2. The cathode rod 10, in conjunction with the anode plate in the electrolytic cell 2, electrolyzes the electrolyte. The molten metal falls into a crucible at the bottom of the electrolytic cell 2 and is collected. During electrolysis, the cathode rod 10 gradually decreases in volume. The descending slide plate 8 gradually lowers the cathode rod 10, ensuring the cathode in the electrolytic cell 2 remains within its proper position. The volume of cathode rod 10 is such that after cathode rod 10 descends to the designated position, a new cathode rod 10 is fixed on another fixing device 11 on the turntable 9. When it is necessary to remove cathode rod 10 from the electrolytic cell 2, the lifting motor 5 drives screw 6 to rotate in the opposite direction, and slide plate 8 rises. When slide plate 8 rises to the designated height, the rotary motor 21 drives the turntable 9 to rotate 180 degrees again, and the new cathode rod 10 reaches the position of entry hole 4 again. The new cathode rod 10 is then inserted into the electrolytic cell 2 for electrolysis. This process is repeated. This device can generate rare earth metals through molten salt electrolysis. When it is necessary to replace cathode rod 10, a new cathode rod 10 is fixed on the turntable 9 and inserted into the electrolytic cell 2 for electrolysis. There is no need to wait for the cathode rod 10 to be removed after electrolysis is completed before fixing the new cathode rod 10 to start electrolysis, which greatly improves the efficiency of rare earth molten salt electrolysis.

[0019] The fixing plate 14 is also fixed with multiple positioning rods 18, which pass through the positioning plate 13 and are slidably connected to the positioning plate 13.

[0020] Among them, a gear ring 19 is fixed on the turntable 9, a rotary motor 21 is fixed on the slide plate 8, and a gear 20 is fixed at the output end of the rotary motor 21. The gear 20 meshes with the gear ring 19.

[0021] Implementation 2:

[0022] This embodiment discloses a rare earth molten salt electrolysis device. Based on the structure and principle of Embodiment 1, this embodiment also has a support tube 22 fixed on the base plate 1, and a support hole 23 is provided on the support tube 22. When fixing the cathode rod 10, the bottom of the cathode rod 10 is inserted into the support hole 23 of the support tube 22. The support tube 22 supports and ensures that the cathode rod 10 is in a vertical state, and the cathode rod 10 is fixed between the positioning ring 12 and the fixing ring 15.

[0023] The above are merely preferred embodiments of the present invention. It should be noted that, for those skilled in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be considered within the scope of protection of the present invention.

Claims

1. A rare earth molten salt electrolysis device, comprising a base plate, characterized in that, An electrolytic cell is fixed on the base plate, and a top cover is provided on the top of the electrolytic cell. The top cover has an entry hole. A lifting motor is also fixed on the base plate, and a screw is fixed to the output end of the lifting motor. Multiple sliding rods are also fixed on the base plate. A sliding plate is also provided above the base plate, and a threaded tube is fixed on the sliding plate. The screw passes through the threaded tube and is threadedly connected to the threaded tube. The sliding rods pass through the sliding plate and are slidably connected to the sliding plate. A turntable is provided on the sliding plate, and the turntable is driven to rotate by a rotary motor. Fixing devices are symmetrically fixed on both sides of the turntable. The fixing devices include a positioning plate fixed on the turntable, a positioning ring fixed on the positioning plate, and a fixing plate is also provided on one side of the positioning plate. A fixing ring is fixed on the fixing plate, and a threaded post is fixed on the positioning plate. The threaded post passes through the fixing plate and is slidably connected to the fixing plate. A nut is provided at the end of the threaded post and is threadedly connected to the threaded post.

2. The rare earth molten salt electrolysis apparatus according to claim 1, characterized in that: The fixing plate is also fixed with multiple positioning rods, which pass through the positioning plate and are slidably connected to it.

3. The rare earth molten salt electrolysis apparatus according to claim 1, characterized in that: A gear ring is fixed on the turntable, the rotary motor is fixed on the slide plate, and a gear is fixed at the output end of the rotary motor, which meshes with the gear ring.

4. The rare earth molten salt electrolysis apparatus according to claim 1, characterized in that: A support tube is also fixed on the base plate, and the support tube is provided with support holes.

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