Device for precipitating and cleaning lithium carbonate

Abstract

The utility model relates to a device for precipitating and cleaning lithium carbonate, which comprises a precipitating box and a cleaning tank, a circle of water collecting tank is arranged around the outer side of the cleaning tank, the top of the water collecting tank is provided with an overflow hole communicated with the cleaning tank, and the top of the cleaning tank is also provided with a cover plate. Wherein a cover plate at the inner edge of an opening of the cleaning tank is bent upwards to form a circle of arching part I, a cylinder for sealing a plurality of groups of overflow holes is arranged in the cleaning tank, a plurality of groups of cross rods are arranged on the inner wall of the bottom of the cylinder in the radial direction, an electric push rod connected with the cross rods is arranged on the cover plate, and vertical rods extending to the outer side of the cover plate are further arranged on the cross rods. A mounting plate connected with the multiple groups of vertical rods is arranged above the cover plate, a motor is arranged on the mounting plate, and a rotating shaft of the motor extends into the cleaning tank and is provided with a stirring paddle; a supporting plate connected with the cylinder through a plurality of sets of connecting rods is arranged at the bottom of the cleaning tank, and a discharging pipe connected with the sediment box is arranged on the side wall, above the supporting plate, of the cleaning tank. The structure is reduced, and use is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium carbonate processing, in particular to a device for precipitating and cleaning lithium carbonate. Background Art

[0002] With the widespread use of electronic products such as electric vehicles and smartphones, lithium has become increasingly popular as an important battery material. The electrolytic aluminum slag produced during aluminum smelting contains a large amount of lithium, so lithium can be extracted by processing the electrolytic aluminum slag. The specific steps are: 1. Pre-treating the electrolytic aluminum slag: First, drying the slag and then crushing it in a ball mill; 2. Placing the pre-treated electrolytic aluminum slag in a reactor, adding sufficient sulfuric acid to react, and filtering the reaction liquid through a filter to obtain a lithium-containing sulfate solution; 3. Reacting the lithium-containing sulfate solution with sodium carbonate to precipitate the lithium in the form of lithium carbonate. The precipitated lithium carbonate is washed with water, filtered, and dried to obtain a high-purity lithium carbonate product; 4. Calcining the lithium carbonate in a high-temperature electric furnace to obtain lithium oxide, which is then treated with water to obtain lithium hydroxide. Finally, through carbonation, high-purity lithium hydroxide is obtained.

[0003] Among them, the existing equipment for precipitating and cleaning lithium carbonate causes impurities inside the lithium carbonate to float on the water surface when the lithium carbonate is precipitated. After the lithium carbonate is precipitated, some impurities are easily discharged together with the lithium carbonate, affecting subsequent processing. Summary of the Invention

[0004] The object of the present invention is to provide a device for precipitating and cleaning lithium carbonate.

[0005] The technical problems of the present invention are mainly solved by the following technical solutions:

[0006] A device for precipitating and cleaning lithium carbonate, comprising a precipitation tank and a cleaning tank located above the precipitation tank:

[0007] A circle of water collecting trough is arranged around the outside of the cleaning tank, wherein the top of the water collecting trough is provided with an overflow hole connected to the cleaning tank, and a cover plate is further provided on the top of the cleaning tank, wherein the cover plate at the inner edge of the opening of the cleaning tank is bent upward to form a circle of arched portion I, and a cylinder is provided in the cleaning tank to seal multiple groups of overflow holes, the top of the cylinder can slide upward into the opening of the arched portion I, and multiple groups of cross bars are radially arranged on the inner wall of the bottom of the cylinder, wherein the cover plate is provided with an electric push rod connected to the cross bar, and the cross bar is also provided with a vertical rod extending to the outside of the cover plate, and a mounting plate connected to the multiple groups of vertical rods is provided above the cover plate, wherein a motor is provided on the mounting plate, and the rotating shaft of the motor extends into the cleaning tank and is equipped with a stirring paddle;

[0008] A support plate connected to the cylinder through multiple groups of connecting rods is provided at the bottom of the cleaning tank, wherein a discharge pipe connected to the sedimentation box is provided on the side wall of the cleaning tank above the support plate, and a circle of arched portion II is bent outward on the side wall of the cleaning tank located above the discharge pipe, and a circle of spray pipes is provided in the opening of the arched portion II, wherein water outlet holes are evenly provided on the side wall of the spray pipe, and the spray pipe is connected to the water tank through a pipe, and a water pump is provided on the pipe.

[0009] Preferably, an overflow pipe is provided at the outlet of the overflow hole, wherein both the overflow pipe and the discharge pipe are provided with solenoid valves.

[0010] Preferably, the support plate is located below the stirring paddle and the rotating shaft, wherein the stirring paddle is located in a circular opening formed between the multiple groups of connecting rods.

[0011] Preferably, the cover plate is provided with through holes for the vertical rods and the rotating shaft to pass through, and the mounting plate is located between the multiple groups of electric push rods.

[0012] Preferably, a scraper is provided at the bottom end of the rotating shaft, which is in close contact with the top surface of the supporting plate, wherein an arc-shaped notch is provided at the bottom end of the scraper, and the corresponding notches at the bottom of the scrapers on both sides of the rotating shaft are staggered.

[0013] Preferably, the diameter of the spray pipe is equal to the width of the opening of the arched portion II, wherein the arched portion II is located below the water collection tank.

[0014] Preferably, the cover plate is provided with a feed pipe staggered with the cross bar.

[0015] The beneficial effects of the present invention are as follows: the present invention achieves the purpose of cleaning by placing lithium carbonate and water on a support plate in a cleaning tank and stirring them with a stirring paddle, wherein the support plate and the cylinder are lifted, and the overflow hole is opened, and the liquid level in the cleaning tank is also lifted, so that the cleaning liquid flows into the water collection tank through the overflow hole, and then the orifice plate is reset to drive the cleaned lithium carbonate to move downward and flow into the sedimentation tank through the discharge pipe. At the same time, the water pump injects the liquid in the water tank into the spray pipe through the pipeline and sprays it downward from a number of water outlets, so as to flush the lithium carbonate above the support plate so that it can flow into the sedimentation tank through the discharge pipe, so that the cleaned lithium carbonate is mixed with water and precipitated again in the sedimentation tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a structural schematic diagram of the present invention in use.

[0018] In the figure: 1. sedimentation tank, 2. cleaning tank, 3. water collecting tank, 4. overflow hole, 5. cover plate, 6. arched part I, 7. cylinder, 8. cross bar, 9. electric push rod, 10. vertical rod, 11. mounting plate, 12. motor, 13. rotating shaft, 14. stirring paddle, 15. connecting rod, 16. support plate, 17. discharge pipe, 18. arched part II, 19. spray pipe, 20. pipeline, 21. water tank, 22. water pump, 23. scraper. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0020] A device for precipitating and cleaning lithium carbonate, comprising a precipitation tank 1 and a cleaning tank 2 located above the precipitation tank 1:

[0021] A circle of water collecting trough 3 is arranged around the outside of the cleaning tank 2, wherein the top of the water collecting trough 3 is provided with an overflow hole 4 connected to the cleaning tank 2, and a cover plate 5 is further provided on the top of the cleaning tank 2, wherein the cover plate 5 at the inner edge of the opening of the cleaning tank 2 is bent upward with a circle of arched portion I6, and a cylinder 7 is provided in the cleaning tank 2 to seal multiple groups of overflow holes 4, and the top of the cylinder 7 can slide upward into the opening of the arched portion I6, and multiple groups of cross bars 8 are radially arranged on the inner wall of the bottom of the cylinder 7, wherein the cover plate 5 is provided with an electric push rod 9 connected to the cross bar 8, and the cross bar 8 is also provided with a vertical rod 10 extending to the outside of the cover plate 5, and a mounting plate 11 connected to the multiple groups of vertical rods 10 is provided above the cover plate 5, wherein a motor 12 is provided on the mounting plate 11, and the rotating shaft 13 of the motor 12 extends into the cleaning tank 2 and is installed with a stirring paddle 14;

[0022] A support plate 16 connected to the cylinder 7 through multiple groups of connecting rods 15 is provided at the bottom of the cleaning tank 2, wherein a discharge pipe 17 connected to the sedimentation box 1 is provided on the side wall of the cleaning tank 2 above the support plate 16, and a circle of arched portion II18 is bent outward on the side wall of the cleaning tank 2 located above the discharge pipe 17, and a circle of spray pipes 19 is provided in the opening of the arched portion II18, wherein water outlet holes are evenly provided on the side wall of the spray pipe 19, and the spray pipe 19 is connected to the water tank 21 through a pipe 20, and a water pump 22 is provided on the pipe 20.

[0023] In this embodiment, an overflow pipe is provided at the outlet of the overflow hole 4 , wherein both the overflow pipe and the discharge pipe 17 are provided with solenoid valves.

[0024] In this embodiment, the support plate 16 is located below the stirring paddle 14 and the rotating shaft 13 to prevent it from obstructing the rotation of the rotating shaft 13 or the stirring paddle 14, wherein the stirring paddle 14 is located in a circular opening formed by multiple groups of connecting rods 15 to prevent the connecting rods 15 from obstructing the rotation of the rotating shaft 13 or the stirring paddle 14.

[0025] In this embodiment, the cover plate 5 is provided with through holes for the vertical rod 10 and the rotating shaft 13 to pass through, and the mounting plate 11 is located between the multiple groups of electric push rods 9.

[0026] In this embodiment, a scraper 23 is provided at the bottom of the shaft 13 and is in close contact with the top surface of the support plate 16. An arc-shaped notch is provided at the bottom of the scraper 23, and the corresponding notches at the bottom of the scraper 23 on both sides of the shaft 13 are staggered.

[0027] In this embodiment, the diameter of the spray pipe 19 is equal to the width of the opening of the arched portion II18, wherein the arched portion II18 is located below the water collecting tank 3.

[0028] In this embodiment, a feed pipe is provided on the cover plate 5 and is staggered with the cross bar 8 .

[0029] The working principle of the present invention is as follows: when in use, lithium carbonate and water are placed on the support plate 16 inside the cleaning tank 2, and the motor 12 is started to stir the lithium carbonate and water together through the rotating shaft 13 and the stirring paddle 14, thereby cleaning the lithium carbonate. After cleaning, the motor 12 is stopped to allow the lithium carbonate to precipitate inside the cleaning tank 2;

[0030] When the cylinder 7 moves upward, the connecting rod 15 drives the supporting plate 16 to move upward, so as to push the liquid at the bottom of the cleaning tank 2 upward through the supporting plate 16, so that the excess liquid above the cleaning tank 2 flows into the water collection tank 3 through the overflow hole 4. At the same time, as the supporting plate 16 pushes the upper part to be lifted and the liquid in the lower half of the cleaning tank 2 rises, the liquid above the lithium carbonate can also be discharged smoothly through the overflow hole 4 as the liquid level rises, so as to prevent the overflow hole 4 from being fixed at a certain position of the cleaning tank 2 when the lithium carbonate cleaning is sometimes large and sometimes small.

[0031] After the liquid level in the cleaning tank 2 is drained, the electric push rod 9 drives the support plate 16 and the lithium carbonate on its top to return to their original position through the cylinder 7, the connecting rod 15 and other components, and then opens the discharge pipe 17 to discharge it into the sedimentation tank 1. At the same time, the water pump 22 injects the liquid in the water tank 21 into the spray pipe 19 through the pipeline 20 and sprays it downward from a number of water outlets to flush the lithium carbonate above the support plate 16 so that it can flow into the sedimentation tank 1 through the discharge pipe, so that the lithium carbonate after cleaning is mixed with water and precipitated again in the sedimentation tank 1.

[0032] The present invention has been described in detail above, but the contents described are only preferred embodiments of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A device for precipitating and cleaning lithium carbonate, comprising a precipitation tank and a cleaning tank located above the precipitation tank, characterized in that: A circle of water collecting trough is arranged around the outside of the cleaning tank, wherein an overflow hole connected to the cleaning tank is arranged on the top of the water collecting trough, and a cover plate is also arranged on the top of the cleaning tank, wherein the cover plate at the inner edge of the opening of the cleaning tank is bent upward to form a circle of arched portion I, and a cylinder is arranged in the cleaning tank to seal multiple groups of overflow holes, and the top of the cylinder can slide upward into the opening of the arched portion I, and multiple groups of cross bars are radially arranged on the inner wall of the bottom of the cylinder, wherein an electric push rod connected to the cross bar is arranged on the cover plate, and vertical bars extending to the outside of the cover plate are also arranged on the cross bar, and a mounting plate connected to the multiple groups of vertical rods is arranged above the cover plate, wherein a motor is arranged on the mounting plate, and the rotating shaft of the motor extends into the cleaning tank and is installed with a stirring paddle; A support plate connected to the cylinder through multiple groups of connecting rods is provided at the bottom of the cleaning tank, wherein a discharge pipe connected to the sedimentation box is provided on the side wall of the cleaning tank above the support plate, and a circle of arched portion II is bent outward on the side wall of the cleaning tank located above the discharge pipe, and a circle of spray pipes is provided in the opening of the arched portion II, wherein water outlet holes are evenly provided on the side walls of the spray pipes, and the spray pipes are connected to the water tank through a pipe, and a water pump is provided on the pipe.

2. A device for precipitating and cleaning lithium carbonate according to claim 1, characterized in that: An overflow pipe is arranged at the outlet of the overflow hole, wherein both the overflow pipe and the discharge pipe are provided with solenoid valves.

3. A device for precipitating and cleaning lithium carbonate according to claim 1, characterized in that: The support plate is located below the stirring paddle and the rotating shaft, wherein the stirring paddle is located in a circular opening formed by a plurality of connecting rods.

4. A device for precipitating and cleaning lithium carbonate according to claim 1, characterized in that: The cover plate is provided with through holes for the vertical rod and the rotating shaft to pass through, and the mounting plate is located between the multiple groups of electric push rods.

5. A device for precipitating and cleaning lithium carbonate according to claim 1, characterized in that: The bottom end of the rotating shaft is provided with a scraper closely attached to the top surface of the supporting plate, wherein the bottom end of the scraper is provided with an arc-shaped notch, and the corresponding notches at the bottom of the scraper on both sides of the rotating shaft are staggered.

6. A device for precipitating and cleaning lithium carbonate according to claim 1, characterized in that: The diameter of the spray pipe is equal to the width of the opening of the arched portion II, wherein the arched portion II is located below the water collection tank.

7. A device for precipitating and cleaning lithium carbonate according to claim 1, characterized in that: The cover plate is provided with a feeding pipe staggered with the cross bar.

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