Lithium material pickling and impurity removing device

By introducing mixing components, temperature control components, and scraping components into the lithium acid washing unit, the problem of uneven mixing between the neutralization and impurity removal solution and the slurry was solved, achieving efficient material mixing and impurity separation, and improving the purity and neutralization efficiency of the lithium material.

CN224092012UActive Publication Date: 2026-04-07INSTITUTE OF APPLIED CHEMISTRY JIANGXI ACADEMY OF SCIENCES +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-09
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

In existing lithium processing, the neutralization and impurity removal solution is not mixed evenly with the slurry, resulting in poor impurity removal and affecting material purity and neutralization efficiency.

Method used

The system employs a mixing component for stirring, combined with a temperature control component for heating and a scraping component for cleaning the inner wall, and a purification component for separating precipitated impurities. Multiple filtration processes are achieved through a liquid pump and a transfer pump.

Benefits of technology

This achieves uniform mixing of materials, improves neutralization efficiency and purity, enhances impurity removal, and improves the practicality of the device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of impurity removal devices, in particular to a lithium material pickling impurity removal device which can stir neutralization impurity removal liquid, so that materials are uniformly mixed, the neutralization efficiency and quality are improved, and the practicability is improved. Comprising a pickling cylinder, a feeding pipe, a mixing assembly, an impurity removal assembly, a temperature control part and a scraping part, the top of the pickling cylinder is connected with the feeding pipe, the mixing assembly is installed in the pickling cylinder, the scraping part is installed on the mixing assembly, the bottom of the pickling cylinder is connected with the impurity removal assembly, and the temperature control part is installed outside the pickling cylinder.
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Description

Technical Field

[0001] This utility model relates to the technical field of impurity removal devices, and in particular to an acid washing and impurity removal device for lithium materials. Background Technology

[0002] Lithium materials refer to the raw materials used in the manufacture of lithium-ion batteries and other lithium products. Lithium materials mainly include various lithium compounds and mineral raw materials. Neutralization and impurity removal are crucial steps in the processing. Existing technology announcement CN214572249U discloses a mining acid washing device, including an acid washing tank with a drain pipe. A support block is installed on one side of the acid washing tank, and a support column is movably connected to the support block. A top plate is fixed to the top of the support column, and a hydraulic cleaning mechanism is installed at the bottom of the top plate. A conduit is installed at the bottom of the acid washing tank, connected to a rinsing mechanism. The rinsing mechanism includes an acid pipe with an interface on its outer wall connected to a pressure pump. A hose is also connected to the outer wall of the acid pipe, with a nozzle connected to the end of the hose furthest from the acid pipe, and a shower head is installed at the end of the acid pipe furthest from the acid washing tank. However, this device cannot agitate the neutralization and impurity removal liquid and the slurry. After the neutralization and impurity removal liquid falls into the slurry, it is difficult to mix evenly, resulting in poor impurity removal from the slurry. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a lithium acid washing and impurity removal device that can stir the neutralization and impurity removal liquid, so as to make the material mix evenly, improve the neutralization efficiency and quality, and improve the practicality.

[0004] This utility model discloses a lithium material pickling and impurity removal device, comprising a pickling drum, a feed pipe, a mixing component, an impurity removal component, a temperature control component, and a scraping component. The feed pipe is connected to the top of the pickling drum, the mixing component is installed inside the pickling drum, and the scraping component is installed on the mixing component. The bottom of the pickling drum is connected to the impurity removal component, and the temperature control component is installed outside the pickling drum. The material is fed into the pickling drum through the feed pipe for pickling and neutralization. The temperature control component can heat the inside of the pickling drum to improve the neutralization efficiency and quality. The mixing component can stir the neutralization and impurity removal liquid to make the material evenly mixed. The impurity removal component can remove and separate the precipitated impurities to make the material purer. The scraping component can clean the inner wall of the pickling drum to improve its practicality.

[0005] Preferably, an annular pipe is installed at the bottom of the pickling cylinder, and an output head is provided on the annular pipe. The output end of the output head is located inside the pickling cylinder. A liquid pump is installed at the bottom left side of the pickling cylinder, and the output end of the liquid pump is connected to the input end of the annular pipe. The input end of the liquid pump is connected to the pickling neutralization liquid pipeline. The liquid pump is started to draw the pickling impurity removal liquid into the annular pipe, and then into the pickling cylinder through the annular pipe. The liquid is introduced into the pickling cylinder at the bottom to increase the contact area with the material.

[0006] Preferably, the mixing assembly includes a mixing motor, a mixing shaft, and multiple stirring blades. The mixing motor is installed at the top of the pickling tank, and the output end of the mixing motor passes through the top of the pickling tank and is installed with the mixing shaft. The mixing shaft is rotatably installed inside the pickling tank, and multiple stirring blades are evenly installed on the outer wall of the mixing shaft. When the mixing motor is started, it drives the mixing shaft to rotate, and the mixing shaft drives multiple sets of stirring blades to rotate, thereby mixing and agitating the material and the pickling solution to improve the impurity removal effect.

[0007] Preferably, the temperature control component includes a heating jacket and a heating wire. The heating jacket is installed outside the pickling tank, and the heating wire is installed inside the heating jacket. The heating wire is activated to preheat the inside of the pickling tank, thereby improving neutralization efficiency and quality.

[0008] Preferably, the scraping component includes multiple sets of connecting rods and multiple scrapers. Multiple connecting rods are installed at the upper and lower ends of the mixing shaft, and connecting rods are installed on the connecting rods. The connecting rods contact the inner wall of the pickling tank. When the mixing shaft rotates, it drives the scrapers to rotate, scraping and cleaning the inner wall of the pickling tank to prevent material from adhering and affecting material discharge.

[0009] Preferably, the impurity removal assembly includes a discharge pipe, multiple support legs, a connecting pipe, a valve, an impurity removal box, a base plate, and a filter screen. The discharge pipe is installed at the bottom output end of the pickling drum, and a valve is installed on the discharge pipe. The bottom of the pickling drum is connected to the top of the impurity removal box via multiple support legs. A base plate is installed at the bottom of the impurity removal box, and a connecting pipe is connected to the top input end of the impurity removal box. A valve is installed on the connecting pipe, and the input end of the connecting pipe is connected to the discharge pipe. A filter screen is installed inside the impurity removal box. After agitation, the mixing motor is turned off, allowing the material inside the pickling drum to settle. The valve is opened, and impurities are input into the impurity removal box through the discharge pipe and the connecting pipe. The settled impurities are placed into the impurity removal box and filtered through the filter screen. The liquid material enters the bottom of the impurity removal box.

[0010] Preferably, the filter screen also includes a rotating shaft, a drive motor, a spiral conveyor blade, a slag discharge pipe, a conveying pipe, and a conveying pump. The filter screen is inclined on both sides, and a semi-circular output cylinder is located in the middle of the filter screen. The rotating shaft is rotatably installed in the middle of the output cylinder. The input end of the rotating shaft is connected to the output end of the drive motor. A spiral conveyor blade is installed on the outer wall of the rotating shaft. A slag discharge pipe is installed on the left side wall of the impurity removal box. The input end of the slag discharge pipe is connected to the lower front end of the impurity removal box, and a conveying pump is installed on the conveying pipe. The output end of the conveying pipe passes through the top of the pickling cylinder and communicates with its interior. When the concentration of the filtered liquid material is high, the conveying pump is started to input the liquid into the pickling cylinder through the conveying pipe. The mixing motor is restarted to mix and agitate the inside of the pickling cylinder. After multiple filtration processes to dilute the concentration, the impurities are discharged through the discharge pipe. At the same time, the drive motor is started to drive the rotating shaft to rotate, which in turn drives the spiral conveyor blade to rotate, pushing the impurities on the top of the filter screen to the left and discharging them through the slag discharge pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: the material is fed into the pickling tank through the feed pipe for pickling and neutralization; the temperature control component can heat the inside of the pickling tank to improve the neutralization efficiency and quality; the mixing component can stir the neutralization and impurity removal liquid to make the material evenly mixed; the impurity removal component can remove and separate the precipitated impurities to make the material purer; and the scraping component can clean the inner wall of the pickling tank to improve its practicality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the isometric structure of this utility model;

[0014] Figure 3 This is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 4 This is a front cross-sectional structural diagram of the present invention;

[0016] Figure 5 This is a schematic diagram of the right-side cross-sectional structure of this utility model;

[0017] The following are labels in the attached diagram: 1. Pickling cylinder; 2. Feed pipe; 3. Annular pipe; 4. Liquid pump; 5. Heating jacket; 6. Heating wire; 7. Mixing motor; 8. Mixing shaft; 9. Stirring blade; 10. Connecting rod; 11. Scraper; 12. Discharge pipe; 13. Support leg; 14. Connecting pipe; 15. Valve; 16. Impurity removal box; 17. Base plate; 18. Filter screen; 19. Rotating shaft; 20. Drive motor; 21. Screw conveyor blade; 22. Slag discharge pipe; 23. Conveying pipe; 24. Conveying pump. Detailed Implementation

[0018] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0019] like Figures 1 to 5As shown, a feed pipe 2 is connected to the top of the pickling cylinder 1, and an annular pipe 3 is installed at the bottom of the pickling cylinder 1. An output head is provided on the annular pipe 3, and the output end of the output head is located inside the pickling cylinder 1. A liquid pump 4 is installed at the bottom left side of the pickling cylinder 1, and the output end of the liquid pump 4 is connected to the input end of the annular pipe 3. A heating jacket 5 is installed outside the pickling cylinder 1, and an electric heating wire 6 is installed inside the heating jacket 5. A mixing motor 7 is installed at the top of the pickling cylinder 1, and a mixing shaft 8 is installed through the top of the mixing motor 7. The mixing shaft 8 is rotatably installed inside the pickling cylinder 1. Multiple stirring blades 9 are evenly installed on the outer wall of the mixing shaft 8. Multiple connecting rods 10 are installed at the upper and lower ends of the mixing shaft 8, and connecting rods 10 are installed on the connecting rods 10. The connecting rods 10 are in contact with the inner wall of the pickling cylinder 1. A discharge pipe 12 is installed at the bottom output end of the pickling cylinder 1, and a valve is installed on the discharge pipe 12. The bottom of the pickling drum 1 is connected to the top of the impurity removal box 16 via multiple support legs 13. A base plate 17 is installed at the bottom of the impurity removal box 16. A connecting pipe 14 is connected to the top input end of the impurity removal box 16. A valve 15 is installed on the connecting pipe 14. The input end of the connecting pipe 14 is connected to the discharge pipe 12. A filter screen 18 is installed inside the impurity removal box 16. The filter screen 18 is inclined on both the front and rear sides. A semi-circular output cylinder is set in the middle of the filter screen 18. A rotating shaft 19 is rotatably installed in the middle of the output cylinder. The input end of the rotating shaft 19 is connected to the output end of the drive motor 20. A spiral conveying blade 21 is installed on the outer wall of the rotating shaft 19. A slag discharge pipe 22 is installed on the left side wall of the impurity removal box 16. A conveying pipe 23 is connected to the lower front end of the impurity removal box 16 at the input end of the slag discharge pipe 22. A conveying pump 24 is installed on the conveying pipe 23. The output end of the conveying pipe 23 passes through the top of the pickling drum 1 and communicates with its interior.

[0020] Connect the input end of the pump 4 to the pickling neutralization liquid pipeline. Start the pump 4 to draw the pickling and impurity removal liquid into the annular pipe 3, and then into the pickling cylinder 1 through the annular pipe 3. The liquid is fed into the pickling cylinder 1 from the bottom to increase the contact area with the material. The material is fed into the pickling cylinder 1 through the feed pipe 2 for pickling and neutralization. Start the mixing motor 7 to drive the mixing shaft 8 to rotate. The mixing shaft 8 drives multiple sets of stirring blades 9 to rotate, mixing and agitating the material and the pickling and impurity removal liquid to improve the impurity removal effect. Start the heating wire 6 to preheat the inside of the pickling cylinder 1 to improve neutralization efficiency and quality. When the mixing shaft 8 rotates, it drives the scraper 11 to rotate, scraping and cleaning the inner wall of the pickling cylinder 1 to prevent material adhesion and ensure proper material discharge. After completion, turn off the mixing motor 7 to allow the material inside the pickling drum 1 to settle. Open valve 15 and input impurities into the impurity removal box 16 through discharge pipe 12 and connecting pipe 14. Put the settled impurities into the impurity removal box 16 and filter them through filter screen 18. The liquid material enters the bottom of the impurity removal box 16. When the concentration of the filtered liquid material is high, start the conveying pump 24 and input the liquid into the pickling drum 1 through conveying pipe 23. Restart the mixing motor 7 to mix and agitate the inside of the pickling drum 1. After multiple filtration processes to dilute the concentration, the impurities are discharged through discharge pipe 12. At the same time, start the drive motor 20 to drive the rotating shaft 19 to rotate and drive the spiral conveyor blade 21 to rotate, pushing the impurities at the top of the filter screen 18 to the left and discharging them through the slag discharge pipe 22.

[0021] like Figures 1 to 5 As shown, this utility model discloses a lithium material pickling and impurity removal device. During operation, the input end of the pump 4 is connected to the pickling and neutralization liquid pipeline. The pump 4 is started to draw the pickling and impurity removal liquid into the annular pipe 3, which then feeds it into the pickling cylinder 1. The material is fed into the pickling cylinder 1 through the feed pipe 2 for pickling and neutralization. The mixing motor 7 is started to drive the mixing shaft 8 to rotate, which in turn drives multiple sets of stirring blades 9 to mix and agitate the material and the pickling and impurity removal liquid. The heating wire 6 is started to preheat the inside of the pickling cylinder 1, improving neutralization efficiency and quality. The rotation of the mixing shaft 8 drives the scraper 11 to rotate, scraping and cleaning the inner wall of the pickling cylinder 1 to prevent material adhesion. After agitation is complete, the mixing motor 7 is turned off. The mixing motor 7 is activated to allow the material inside the pickling drum 1 to settle. Valve 15 is opened, and impurities are fed into the impurity removal box 16 through the discharge pipe 12 and the connecting pipe 14. The settled impurities are placed into the impurity removal box 16 and filtered through the filter screen 18. The liquid material enters the bottom of the impurity removal box 16. When the concentration of the filtered liquid material is high, the conveying pump 24 is started to feed the liquid into the pickling drum 1 through the conveying pipe 23. The mixing motor 7 is restarted to mix and agitate the inside of the pickling drum 1. After multiple filtration processes to reduce the concentration, the impurities are discharged through the discharge pipe 12. At the same time, the drive motor 20 is started to drive the rotating shaft 19 to rotate, which in turn drives the spiral conveyor blade 21 to rotate, pushing the impurities at the top of the filter screen 18 to the left and discharging them through the slag discharge pipe 22.

[0022] The liquid pump 4, mixing motor 7, valve 15, drive motor 20 and delivery pump 24 of the lithium material acid washing and impurity removal device of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0023] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A lithium material acid washing and impurity removal device, characterized in that, It includes a pickling drum (1), a feed pipe (2), a mixing component, a cleaning component, a temperature control component, and a scraping component. The top of the pickling drum (1) is connected to the feed pipe (2). The mixing component is installed inside the pickling drum (1). The scraping component is installed on the mixing component. The bottom of the pickling drum (1) is connected to the cleaning component. The temperature control component is installed on the outside of the pickling drum (1).

2. The lithium material acid washing and impurity removal device as described in claim 1, characterized in that, The bottom of the pickling cylinder (1) is equipped with an annular tube (3), and an output head is provided on the annular tube (3). The output end of the output head is located inside the pickling cylinder (1). A liquid pump (4) is installed on the bottom left side of the pickling cylinder (1), and the output end of the liquid pump (4) is connected to the input end of the annular tube (3).

3. The lithium material acid washing and impurity removal device as described in claim 1, characterized in that, The mixing assembly includes a mixing motor (7), a mixing shaft (8), and multiple stirring blades (9). The mixing motor (7) is installed at the top of the pickling tank (1). The output end of the mixing motor (7) passes through the top of the pickling tank (1) and is installed with the mixing shaft (8). The mixing shaft (8) is rotatably installed inside the pickling tank (1). Multiple stirring blades (9) are evenly installed on the outer wall of the mixing shaft (8).

4. The lithium material acid washing and impurity removal device as described in claim 1, characterized in that, The temperature control components include a heating jacket (5) and a heating wire (6). The heating jacket (5) is installed outside the pickling cylinder (1), and the heating wire (6) is installed inside the heating jacket (5).

5. The lithium material acid washing and impurity removal device as described in claim 3, characterized in that, The scraping component includes multiple sets of connecting rods (10) and multiple scrapers (11). Multiple connecting rods (10) are installed at the upper and lower ends of the mixing shaft (8). Connecting rods (10) are installed on the connecting rods (10) and the connecting rods (10) are in contact with the inner wall of the pickling cylinder (1).

6. The lithium material acid washing and impurity removal device as described in claim 1, characterized in that, The impurity removal assembly includes a discharge pipe (12), multiple support legs (13), a connecting pipe (14), a valve (15), an impurity removal box (16), a base plate (17), and a filter screen (18). The discharge pipe (12) is installed at the bottom output end of the pickling drum (1). A valve is installed on the discharge pipe (12). The bottom of the pickling drum (1) is connected to the top of the impurity removal box (16) through multiple support legs (13). A base plate (17) is installed at the bottom of the impurity removal box (16). A connecting pipe (14) is connected to the top input end of the impurity removal box (16). A valve (15) is installed on the connecting pipe (14). The input end of the connecting pipe (14) is connected to the discharge pipe (12). A filter screen (18) is installed inside the impurity removal box (16).

7. The lithium material acid washing and impurity removal device as described in claim 6, characterized in that, It also includes a rotating shaft (19), a drive motor (20), a spiral conveyor blade (21), a slag discharge pipe (22), a conveying pipe (23), and a conveying pump (24). The filter screen (18) is inclined on both the front and rear sides. A semi-circular output cylinder is provided in the middle of the filter screen (18). The rotating shaft (19) is rotatably installed in the middle of the output cylinder. The input end of the rotating shaft (19) is connected to the output end of the drive motor (20). A spiral conveyor blade (21) is installed on the outer wall of the rotating shaft (19). A slag discharge pipe (22) is installed on the left side wall of the impurity removal box (16). The input end of the slag discharge pipe (22) is connected to the lower front end of the impurity removal box (16) and the conveying pipe (23). A conveying pump (24) is installed on the conveying pipe (23). The output end of the conveying pipe (23) passes through the top of the pickling cylinder (1) and communicates with its interior.