Modularized fluoride salt material box at upper part of electrolytic tank
By designing a modular fluorinated salt box at the upper part of the electrolytic tank, using a cylinder-free brushless fixed-capacity loader and an inclined boiling plate, the leakage and accumulation of material during the removal of the fluorinated salt box in the prior art is solved. Achieve more efficient use of fluoride salts and a more convenient maintenance process.
Patent Information
- Application Number
- CN202421273662.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-06-05
AI Technical Summary
The integrated structure of the fluorinated salt box in the upper part of the existing electrolytic tank and the upper part of the electrolytic tank is designed, which easily leads to leakage of fluorinated salt when removing the feeder, and the design of the bottom part of the material box causes serious accumulation of fluorinated salt.
Design a modular fluorinated salt box at the upper part of the electrolytic cell, with a cylinder-free brushless fixed-capacity loader and an inclined boiling plate. The cutting pipe adopts a concave-convex and convex docking method, and adds a suspended ring and a movable fixing card for easy disassembly. Repair and prevent waste of fluorinated salts.
It effectively solves the material leakage and accumulation problems during the removal of the fluorinated salt box, reduces the difficulty of maintenance, avoids waste of fluorinated salt, and improves the sealing of the material box and the superstructure.
Smart Images
Figure CN222476775U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aluminum electrolysis production, in particular to a modular fluoride salt material box on the upper part of an electrolytic cell. Background Art
[0002] During the aluminum electrolysis process, the fluoride salt required for the electrolytic cell is regularly fed through a constant-volume feeder in the fluoride salt bin above the cell. Specifically, ground fluoride salt is added to one to three fluoride salt bins above the cell via a telescopic fluoride salt feeder. Fluoride salt in the bins is automatically fed through a cylinder-less, brushless constant-volume feeder controlled by a feed cylinder at intervals set by the cell controller. Fluoride salt enters the electrolytic cell through a feed pipe in the gas hood, where it is used for aluminum electrolysis using the cryolite-alumina molten salt electrolysis method.
[0003] Most of the existing electrolytic cells have an upper fluoride salt material box that is designed as an integral part of the upper structure of the electrolytic cell. The material box shell is fixed to the upper structure frame by welding. The boiling plate at the bottom of the material box and the barrel-less and brushless feeder need to be repaired on-site. Once the barrel-less and brushless feeder is removed, the fluoride salt in the material box will leak into the feeding point, causing waste of fluoride salt. The material box space is small and manual cleaning is difficult. In addition, the bottom of the existing fluoride salt material box is designed with three horizontal fluoride salt boiling plates, and one side of the feeding port is designed as an inclined steel plate style. This structure causes serious fluoride material accumulation in the box. Utility Model Content
[0004] The purpose of the utility model is to provide a modular fluoride salt material box on the upper part of the electrolytic cell, so as to solve the problem of material leakage caused by removing the feeder when the fluoride salt material box is integrated with the upper structure of the electrolytic cell mentioned in the background technology, and the problem of serious material accumulation caused by the design of three horizontal boiling plates on the bottom of the fluoride salt material box.
[0005] The utility model adopts the following technical solutions:
[0006] The utility model discloses a modular fluoride salt material box on the upper part of an electrolytic cell, comprising a material box, a barrel-less and brushless constant-volume feeder is arranged in the middle position inside the material box, a feeding cylinder connected to the barrel-less and brushless constant-volume feeder is arranged in the center of the material box top cover, and a manual valve is arranged at the front section of the lifting air supply pipe of the feeding cylinder.
[0007] The top cover of the material box is provided with a plurality of hanging rings near the edges thereof, the edge of the top cover of the material box is provided with a plurality of movable fixing clips, and the top cover of the material box is provided with a feeding port cover.
[0008] A boiling plate with an inclination angle greater than the repose angle of powdered alumina of 37° and less than 45° is provided on the bottom plate inside the material box and around the cylinder-less brushless constant volume feeder.
[0009] A first discharge pipe detachably connected to the barrelless brushless constant volume discharger is provided on the lower side of the material box bottom plate. The lower end of the first discharge pipe is connected to the second discharge pipe through a concave-convex docking method. The second discharge pipe is arranged through the air collecting hood, and the upper port of the air collecting hood is fixedly connected to the horizontal cover plate.
[0010] Furthermore, a sealing gasket is provided between the bottom plate of the material box and the horizontal cover plate.
[0011] Furthermore, the movable fixing card includes a pin rod, an I-beam slot and a vertical plate, the pin rod is fixedly connected to the top cover of the material box, the pin rod is connected to the I-beam slot pin, the I-beam slot is fixedly connected to the vertical plate, and the vertical plate is fixed to the horizontal cover plate.
[0012] Furthermore, a reserved hole is provided on the horizontal cover plate for the first discharge pipe to pass through.
[0013] Furthermore, the number of the hanging rings is at least 3.
[0014] Furthermore, the discharge port of the first discharge pipe is set as a convex port, and the discharge port of the second discharge pipe is set as a concave port corresponding to the convex port of the first discharge pipe.
[0015] Compared with the prior art, the beneficial technical effects of the present invention are:
[0016] The utility model is provided with a boiling plate with an inclination angle greater than 37° and less than 45° on the bottom plate inside the material box and around the cylinder-free brushless constant volume feeder. The inclination of the boiling plate solves the problem of dynamic material accumulation and continuous reduction of volume caused by material accumulation inside the material box. At the same time, the material box is set as a detachable device, and the fluoride salt feeding pipe is set as a split type with concave and convex mouths connected. The lifting ring and the movable fixing card are added, so that the boiling plate or the cylinder-free brushless feeder can be disassembled and maintained, which reduces the difficulty of cleaning and ensures that no waste of fluoride salt is caused during disassembly and maintenance. At the same time, the concave and convex docking mode of the first discharge pipe and the second discharge pipe facilitates accurate docking during installation of the material box, and the lifting ring and the movable card facilitate quick and accurate positioning of the material box during lifting; the sealing gasket between the bottom of the material box and the horizontal cover plate is conducive to improving the sealing between the fluoride salt material box and the upper structure; closing the manual valve in front of the discharge cylinder lifting air supply pipe is conducive to preventing fluoride salt leakage when the material box is dismantled, and at the same time, closing the manual valve before the compressed air pipeline in the electrolysis plant is shut down for maintenance is also conducive to preventing fluoride salt material box leakage during the shutdown period. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present invention will be further described below with reference to the accompanying drawings.
[0018] Figure 1 This is a schematic diagram of the modular fluoride salt material box structure on the upper part of the electrolytic cell of the utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the movable fixing card of the utility model.
[0020] Explanation of the accompanying symbols: 1. Material box; 2. Cylinderless and brushless constant volume feeder; 3. Feeding cylinder; 4. Feeding port cover; 5. Movable fixing card; 501. Pin rod; 502. I-beam slot; 503. Vertical plate; 6. First feeding pipe; 7. Boiling plate; 8. Sealing gasket; 9. Second feeding pipe; 10. Lifting ring; 11. Manual valve; 12. Horizontal cover plate; 13. Gas collecting hood. DETAILED DESCRIPTION
[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
[0022] like Figure 1 As shown, this embodiment discloses a modular fluoride salt feed box on the upper part of the electrolytic cell, including a feed box 1, a barrel-less brushless constant volume feeder 2 is set in the middle position inside the feed box 1, a feeding cylinder 3 connected to the barrel-less brushless constant volume feeder 2 is set in the center of the top cover of the feed box 1, and a manual valve 11 is set in the front section of the lifting air supply pipe of the feeding cylinder 3. The feeding cylinder 3 is provided with a lifting air supply pipe and a descending air supply pipe. When the lifting air supply pipe is working to supply air, the barrel-less brushless constant volume feeder 2 starts to discharge, and when the lifting air supply pipe is closed to supply air to the descending air supply pipe, the barrel-less brushless constant volume feeder 2 stops discharging. The manual valve 11 is installed on the lifting air supply pipe for
[0023] When disassembling the material box, close the manual valve 11, and the brushless constant volume feeder 2 is in the closed state. The fluoride salt in the material box 1 cannot flow to the shelling hole of the electrolytic cell, thus avoiding excessive fluoride addition affecting the technical condition of the electrolytic cell and wasting fluoride salt.
[0024] A plurality of lifting rings 10 are provided near the edges of the top cover of the material box 1 , a plurality of movable fixing clips 5 are provided on the edge of the top cover of the material box 1 , and a feeding port cover 4 is provided on the top cover of the material box 1 .
[0025] A boiling plate 7 with an inclination angle greater than the repose angle of powdered alumina of 37° and less than 45° is provided on the bottom plate inside the material box 1 around the cylinder-less brushless constant volume feeder 2.
[0026] A first discharge pipe 6 is provided on the lower side of the bottom plate of the material box 1. The upper end of the first discharge pipe 6 is detachably connected to the tubeless brushless constant volume discharger 2. The lower end of the first discharge pipe 6 is connected to the second discharge pipe 9 through a concave-convex docking method. The second discharge pipe 9 is arranged through the air collecting hood 13, and the upper port of the air collecting hood 13 is fixedly connected to the horizontal cover plate 12.
[0027] In this embodiment, a sealing gasket 8 is provided between the bottom plate of the material box 1 and the horizontal cover plate 12. The sealing gasket 8 is adhered to the bottom plate of the material box 1 to reduce friction and shaking during installation of the material box 1 and improve sealing performance.
[0028] like Figure 1 and Figure 2 As shown, the movable fixing card 5 includes a pin rod 501, an I-beam slot 502 and a vertical plate 503. The pin rod 501 is fixedly connected to the top cover of the material box 1. The pin rod 501 is connected to the I-beam slot 502 by a pin. The I-beam slot 502 is fixedly connected to the vertical plate 503. The vertical plate 503 is fixed on the horizontal cover plate 12.
[0029] The horizontal cover plate 12 is provided with a reserved hole for the first discharge pipe 6 to pass through. The discharge port of the first discharge pipe 6 is set as a convex port, and the discharge port of the second discharge pipe 9 is set as a concave port corresponding to the convex port of the first discharge pipe 6.
[0030] In this embodiment, the number of the hanging rings 10 is at least three.
[0031] like Figure 1 As shown, the action process of the utility model is as follows:
[0032] To install the feed box 1, lift it to the desired location using the lifting ring 10. Then lower it so that the first discharge pipe 6 and the second discharge pipe 9 are docked. The pin 501 of the movable fixing clamp 5 is fixed to the I-beam slot 502, and the compressed air line of the discharge cylinder 3 is connected. Fluoride salt is added to the feed box 1. The boiling plate 7, set at an angle greater than 37 degrees and less than 45 degrees, effectively reduces fluoride salt accumulation in the feed box 1. The drumless, brushless, constant-volume discharger 2 can discharge the fluoride salt in a timely and quantitative manner. The fluoride salt enters the electrolytic cell through the first discharge pipe 6 and the second discharge pipe 9.
[0033] When it is necessary to repair the barrelless brushless constant volume feeder 2 or the boiling plate 7, close the feeding cylinder 3 and lift the manual valve 11 set at the front section of the air supply pipe, disconnect the connecting pipe of the material box 1, close the barrelless brushless constant volume feeder 2, and the remaining salt material in the material box 1 will not leak. Use the lifting ring 10 to lift the material box 1 and place it on the maintenance rack. Place the material receiving box at the bottom of the maintenance rack, open the manual valve 11, remove the barrelless brushless constant volume feeder 2, and the remaining salt material in the material box 1 will flow into the material receiving box below and can be used again. After the repair of the barrelless brushless constant volume feeder 2 or the boiling plate 7 is completed, reinstall it in the feed box 1, and lift the material box 1 to the required position of the upper structure of the electrolytic cell through the lifting ring 10, and repeat the above installation action.
[0034] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.
Claims
1. A modular fluoride salt material box on the upper part of an electrolytic cell, characterized in that: It comprises a material box (1), a barrelless and brushless constant volume feeder (2) is arranged in the middle of the material box (1), a feeding cylinder (3) connected to the barrelless and brushless constant volume feeder (2) is arranged in the center of the top cover of the material box (1), and a manual valve (11) is arranged at the front section of the lifting air supply pipe of the feeding cylinder (3); A plurality of lifting rings (10) are arranged near the edges of the top cover of the material box (1), a plurality of movable fixing clips (5) are arranged on the edge of the top cover of the material box (1), and a feeding port cover (4) is arranged on the top cover of the material box (1); A boiling plate (7) is arranged on the inner bottom plate of the material box (1) around the cylinderless brushless constant volume feeder (2) and is inclined toward the brushless constant volume feeder (2); A first feed pipe (6) is arranged on the lower side of the bottom plate of the material box (1), the upper end of the first feed pipe (6) is connected to the tubeless brushless constant volume feeder (2), the lower end of the first feed pipe (6) is connected to the second feed pipe (9) by a concave-convex joint method, the second feed pipe (9) is arranged through the air collecting hood (13), and the upper port of the air collecting hood (13) is fixedly connected to the horizontal cover plate (12).
2. The upper modular fluoride salt tank of the electrolytic cell according to claim 1, characterized in that: A sealing gasket (8) is provided between the bottom plate of the material box (1) and the horizontal cover plate (12).
3. The upper modular fluoride salt tank of the electrolytic cell according to claim 1, characterized in that: The movable fixing card (5) comprises a pin rod (501), an I-beam slot (502) and a vertical plate (503), wherein the pin rod (501) is fixedly connected to the top cover of the material box (1), the pin rod (501) is connected to the I-beam slot (502) by a pin, the I-beam slot (502) is fixedly connected to the vertical plate (503), and the vertical plate (503) is fixed to the horizontal cover plate (12).
4. The upper modular fluoride salt tank of the electrolytic cell according to claim 3, characterized in that: The horizontal cover plate (12) is provided with a reserved hole for the first discharge pipe (6) to pass through.
5. The upper modular fluoride salt tank of the electrolytic cell according to claim 1, characterized in that: The number of the hanging rings (10) is at least 3.
6. The upper modular fluoride salt tank of the electrolytic cell according to claim 1, characterized in that: The discharge port of the first discharge pipe (6) is arranged as a convex port, and the discharge port of the second discharge pipe (9) is arranged as a concave port corresponding to the convex port of the first discharge pipe (6).
7. The upper modular fluoride salt tank of the electrolytic cell according to claim 1, characterized in that: The inclination angle of the boiling plate (7) is greater than 37° and less than 45°.