Reaction kettle for preparing battery-grade lithium carbonate

Abstract

The utility model relates to the technical field of lithium carbonate production equipment, and discloses a reaction kettle for preparing battery grade lithium carbonate, which comprises a barrel body, the inner wall of the top of the barrel body is rotatably connected with a stirring barrel, the top of the barrel body is provided with an air inlet pipe, the bottom end of the air inlet pipe penetrates through the top wall of the barrel body, and the bottom end of the air inlet pipe penetrates through the stirring barrel; through the arrangement of the gas inlet pipe, the gas storage box, the one-way gas guide pipe, the plugging hole and the plugging plate, carbon dioxide gas can be conveniently and uniformly injected into mother liquor, so that the carbon dioxide gas is fully mixed and reacted with the mother liquor, and the utilization rate of carbon dioxide is increased; through arrangement of a second bevel gear, a stirring barrel, a rotating barrel, a third bevel gear, a first stirring rod and a second stirring rod, the rotating directions of the second bevel gear and the third bevel gear are opposite, the first stirring rod and the second stirring rod are driven to fully mix mother liquor and carbon dioxide, and the utilization rate of carbon dioxide is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium carbonate production equipment, in particular to a reaction kettle for preparing battery-grade lithium carbonate. Background Art

[0002] Lithium carbonate is a relatively important compound among lithium salts today. It is mainly used in new energy vehicle batteries, glass ceramics, alloys and medicines. The new energy industry is developing rapidly, including lithium-ion batteries. The cost of the positive electrode material in the lithium battery accounts for 70-80% of the entire battery. The mainstream products on the market today mainly include positive electrode materials such as lithium nickel cobalt manganese oxide, lithium cobalt oxide, and lithium iron phosphate, all of which are made of lithium carbonate. As the demand for new energy vehicles continues to increase, the problems that arise also increase, especially the problems of power batteries are particularly prominent, which is related to the purity of the raw materials and the performance of the materials, so the purity requirements for lithium carbonate are getting higher and higher.

[0003] At present, battery-grade lithium carbonate is mainly prepared with industrial-grade lithium carbonate as raw material, mainly including causticization, electrolysis, hydrogenation, etc. Among them, the hydrogenation method is the most reliable, but a lot of carbon dioxide is not fully utilized in the hydrogenation reaction and synthesis reaction, and the utilization rate is even too low, which seriously wastes high-purity carbon dioxide gas, resulting in waste of gas raw materials and incomplete reaction of industrial-grade lithium carbonate.

[0004] Therefore, it is necessary to provide a reactor for preparing battery-grade lithium carbonate to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide a reaction kettle for preparing battery-grade lithium carbonate, which facilitates improving the utilization rate of carbon dioxide through the arrangement of an air inlet pipe, a gas storage box, a one-way air guide pipe, a blocking hole and a blocking plate.

[0006] The above-mentioned technical purpose of the utility model is achieved through the following technical scheme: a reactor for preparing battery-grade lithium carbonate, comprising a cylinder, the top inner wall of the cylinder is rotatably connected to a stirring drum, the top of the cylinder is provided with an air inlet pipe, the bottom end of the air inlet pipe penetrates the top wall of the cylinder, the bottom end of the air inlet pipe penetrates the stirring drum, the bottom end of the air inlet pipe is fixedly connected to an air storage box, the top of the air storage box is provided with a plurality of one-way air guide pipes, the outer side of the stirring drum is sleeved with a second bevel gear, the stirring drum is fixedly connected to the second bevel gear, the outer wall of the stirring drum is provided with a plurality of first stirring rods, the bottom end of the stirring drum is fixedly connected to a plurality of sealing plates, the bottom ends of the plurality of sealing plates are fixedly opened with a plurality of sealing holes, and the outer side of the stirring drum is provided with a stirring mechanism.

[0007] By adopting the above technical solution, through the arrangement of the air inlet pipe, the air storage box, the one-way air guide pipe, the blocking hole and the blocking plate, it is convenient to uniformly inject carbon dioxide gas into the mother liquor, so that the carbon dioxide gas can fully mix and react with the mother liquor, thereby improving the utilization rate of carbon dioxide.

[0008] The utility model is further configured as follows: the stirring mechanism includes a plurality of second stirring rods, the outer side of the stirring drum is rotatably connected to a rotating drum, the outer side of the rotating drum is sleeved with a third bevel gear, the rotating drum is fixedly connected to the third bevel gear, and one end of the plurality of second stirring rods is fixedly connected to the outer side of the rotating drum.

[0009] By adopting the above technical solution and fully cooperating with the first stirring rod, the mixing effect can be improved and the utilization rate of carbon dioxide can be further improved.

[0010] The utility model is further configured as follows: two support plates are fixedly connected to the top of the cylinder, the two support plates are respectively located on both sides of the air inlet pipe, the tops of the two support plates are fixedly connected to a fixing plate, a fixing groove is opened on the top of the fixing plate, the air inlet pipe passes through the fixing groove, and the air inlet pipe is fixedly connected to the fixing groove.

[0011] By adopting the above technical solution, the intake pipe can be limited and fixed to a certain extent, thereby preventing the intake pipe from shaking.

[0012] The utility model is further configured as follows: a mounting frame is fixedly connected to the side wall of the cylinder, a motor is fixedly installed on the top of the mounting frame, an output end of the motor passes through the side wall of the cylinder, and a first bevel gear is fixedly connected to the output end of the motor.

[0013] By adopting the above technical solution, the motor is started, which conveniently drives the first bevel gear to rotate, and then drives the second bevel gear and the third bevel gear to rotate in the opposite direction, which can improve the mixing effect and further improve the utilization rate of carbon dioxide.

[0014] The utility model is further configured as follows: the first bevel gear is meshed with the second bevel gear, and the first bevel gear is meshed with the third bevel gear.

[0015] By adopting the above technical solution, it is convenient to drive the second bevel gear and the third bevel gear to rotate in the opposite direction.

[0016] The utility model is further configured as follows: a feed pipe is connected to the top of the cylinder, and a discharge pipe is connected to the side wall of the cylinder.

[0017] By adopting the above technical solution, it is convenient to pour the mother liquid into the cylinder and to guide the liquid after the reaction out of the cylinder.

[0018] In summary, the utility model has the following beneficial effects: through the arrangement of the air inlet pipe, the air storage box, the one-way air guide pipe, the blocking hole and the blocking plate, it is convenient to evenly inject carbon dioxide gas into the mother liquor, so that the carbon dioxide gas is fully mixed and reacted with the mother liquor, thereby improving the utilization rate of carbon dioxide; through the arrangement of the second bevel gear, the mixing drum, the rotating drum, the third bevel gear, the first stirring rod and the second stirring rod, the second bevel gear and the third bevel gear rotate in opposite directions, thereby driving the first stirring rod and the second stirring rod to fully mix the mother liquor and carbon dioxide, thereby improving the utilization rate of carbon dioxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the air intake pipe and the air storage box of the utility model;

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the mixing drum, the third bevel gear and the second mixing rod of the utility model;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the second bevel gear, the blocking plate and the blocking hole of the utility model.

[0024] In the figure: 1. cylinder; 2. feed pipe; 3. discharge pipe; 4. mounting frame; 5. motor; 6. support plate; 7. fixing plate; 8. air inlet pipe; 9. air storage box; 10. one-way air guide pipe; 11. first bevel gear; 12. second bevel gear; 13. mixing cylinder; 14. first stirring rod; 15. third bevel gear; 16. rotating cylinder; 17. second stirring rod; 18. sealing plate; 19. sealing hole. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0026] See also Figures 1 to 5In an embodiment of the utility model, a reactor for preparing battery-grade lithium carbonate comprises a cylinder 1, the top inner wall of the cylinder 1 is rotatably connected with a mixing drum 13, an air inlet pipe 8 is arranged on the top of the cylinder 1, the bottom end of the air inlet pipe 8 penetrates the top wall of the cylinder 1, the bottom end of the air inlet pipe 8 penetrates the mixing drum 13, and a sealing gasket is arranged between the bottom end of the mixing drum 13 and the outer wall of the air inlet pipe 8 to prevent liquid from entering the interior of the mixing drum 13, the bottom end of the air inlet pipe 8 is fixedly connected with an air storage box 9, the top of the air storage box 9 is provided with a plurality of one-way air guide pipes 10, the mixing drum The outer side of 13 is sleeved with a second bevel gear 12, the mixing drum 13 is fixedly connected to the second bevel gear 12, the outer wall of the mixing drum 13 is provided with a plurality of first stirring rods 14, the bottom end of the mixing drum 13 is fixedly connected with a plurality of blocking plates 18, the bottom ends of the plurality of blocking plates 18 are fixedly opened with a plurality of blocking holes 19, and the outer side of the mixing drum 13 is provided with a stirring mechanism; when in use, the air inlet pipe 8 is externally connected to carbon dioxide gas, the feed pipe 2 is externally connected to the mother liquid, the motor 5 is started, and the output end of the motor 5 drives the first bevel gear 11 to rotate, thereby driving the second bevel gear 12 and the third bevel gear 1 5 rotates, and since the second bevel gear 12 and the third bevel gear 15 are in opposite directions, the mixing drum 13 and the rotating drum 16 are driven to rotate in the opposite direction, and then the first stirring rod 14 and the second stirring rod 17 are driven to rotate in the opposite direction, so that the mother liquid and the gas are fully stirred and mixed; at the same time, during the stirring of the mixing drum 13, since the one-way air guide pipes 10 are all located in the blocking holes 19, when the mixing drum 13 rotates, the blocking plate 18 is driven to rotate, and then the one-way air guide pipes 10 located in the blocking holes 19 are exposed, so that the carbon dioxide in the gas storage box 9 flows from the one-way air guide pipe 10 into the mother liquid for reaction, so that The carbon dioxide is obtained to fully react with the mother liquor; the stirring drum 13 keeps stirring all the time, and the one-way air guide pipe 10 is sometimes located in the blocking hole 19, and sometimes located outside the blocking hole 19, so that the carbon dioxide gas is evenly added to the mother liquor for a full reaction; the waste of carbon dioxide is avoided; the liquid after the full reaction is discharged from the discharge pipe 3; through the arrangement of the air inlet pipe 8, the air storage box 9, the one-way air guide pipe 10, the blocking hole 19 and the blocking plate 18, it is convenient to evenly inject carbon dioxide gas into the mother liquor, so that the carbon dioxide gas is fully mixed and reacted with the mother liquor, thereby improving the utilization rate of carbon dioxide.

[0027] In this embodiment, preferably, the stirring mechanism includes a plurality of second stirring rods 17, the outer side of the stirring drum 13 is rotatably connected to a rotating drum 16, the outer side of the rotating drum 16 is sleeved with a third bevel gear 15, the rotating drum 16 is fixedly connected to the third bevel gear 15, and one end of the plurality of second stirring rods 17 is fixedly connected to the outer side of the rotating drum 16; fully cooperating with the first stirring rod 14, the mixing effect can be improved, and the utilization rate of carbon dioxide can be further improved.

[0028] In the present embodiment, preferably, two support plates 6 are fixedly connected to the top of the cylinder 1, and the two support plates 6 are respectively located on both sides of the air inlet pipe 8, and a fixing plate 7 is fixedly connected to the top of the two support plates 6. A fixing groove is opened on the top of the fixing plate 7, and the air inlet pipe 8 passes through the fixing groove, and the air inlet pipe 8 is fixedly connected to the fixing groove; it plays a certain limiting and fixing role on the air inlet pipe 8 to prevent the air inlet pipe 8 from shaking.

[0029] In the present embodiment, preferably, the side wall of the cylinder 1 is fixedly connected with a mounting frame 4, the top of the mounting frame 4 is fixedly installed with a motor 5, the output end of the motor 5 passes through the side wall of the cylinder 1, and the output end of the motor 5 is fixedly connected with a first bevel gear 11; when the motor 5 is started, it is convenient to drive the first bevel gear 11 to rotate, and then drive the second bevel gear 12 and the third bevel gear 15 to rotate in the opposite direction, which can improve the mixing effect and further improve the utilization rate of carbon dioxide.

[0030] In this embodiment, preferably, the first bevel gear 11 is meshed with the second bevel gear 12 , and the first bevel gear 11 is meshed with the third bevel gear 15 , so as to conveniently drive the second bevel gear 12 and the third bevel gear 15 to rotate in opposite directions.

[0031] In this embodiment, preferably, a feed pipe 2 is connected to the top of the cylinder 1, and a discharge pipe 3 is connected to the side wall of the cylinder 1; this facilitates pouring the mother liquid into the cylinder 1 and conveniently leading the reacted liquid out of the cylinder 1.

[0032] Working principle: When in use, the air inlet pipe 8 is connected to the carbon dioxide gas, the feed pipe 2 is connected to the mother liquid, the motor 5 is started, and the output end of the motor 5 drives the first bevel gear 11 to rotate, and then drives the second bevel gear 12 and the third bevel gear 15 to rotate. Since the second bevel gear 12 and the third bevel gear 15 are in opposite directions, the stirring drum 13 and the rotating drum 16 are driven to rotate in the opposite direction, and then the first stirring rod 14 and the second stirring rod 17 are driven to rotate in the opposite direction, so as to fully stir and mix the mother liquid and the gas; at the same time, during the stirring of the stirring drum 13, since the one-way air guide pipes 10 are all located In the blocking hole 19, when the mixing drum 13 rotates, the blocking plate 18 is driven to rotate, thereby exposing the one-way air guide pipe 10 in the blocking hole 19, and the carbon dioxide in the gas storage box 9 flows into the mother liquor from the one-way air guide pipe 10 for reaction, so that the carbon dioxide and the mother liquor are fully reacted; the mixing drum 13 continues to stir, and the one-way air guide pipe 10 is sometimes located in the blocking hole 19 and sometimes located outside the blocking hole 19, so that the carbon dioxide gas is evenly added to the mother liquor for full reaction; the waste of carbon dioxide is avoided; the liquid after full reaction is discharged from the discharge pipe 3.

[0033] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A reactor for preparing battery-grade lithium carbonate, comprising a cylinder (1), Features: The top inner wall of the cylinder (1) is rotatably connected to a mixing drum (13); an air inlet pipe (8) is arranged on the top of the cylinder (1); the bottom end of the air inlet pipe (8) penetrates the top wall of the cylinder (1); the bottom end of the air inlet pipe (8) penetrates the mixing drum (13); the bottom end of the air inlet pipe (8) is fixedly connected to an air storage box (9); a plurality of one-way air guide pipes (10) are arranged on the top of the air storage box (9); a second bevel gear (12) is sleeved on the outer side of the mixing drum (13); the mixing drum (13) is fixedly connected to the second bevel gear (12); a plurality of first stirring rods (14) are arranged on the outer wall of the mixing drum (13); a plurality of sealing plates (18) are fixedly connected to the bottom end of the mixing drum (13); a plurality of sealing holes (19) are fixedly opened at the bottom ends of the plurality of sealing plates (18); a stirring mechanism is arranged on the outer side of the mixing drum (13).

2. A reactor for preparing battery-grade lithium carbonate according to claim 1, Features: The stirring mechanism comprises a plurality of second stirring rods (17); the outer side of the stirring drum (13) is rotatably connected to a rotating drum (16); the outer side of the rotating drum (16) is sleeved with a third bevel gear (15); the rotating drum (16) is fixedly connected to the third bevel gear (15); and one end of the plurality of second stirring rods (17) is fixedly connected to the outer side of the rotating drum (16).

3. A reactor for preparing battery-grade lithium carbonate according to claim 1, Features: Two support plates (6) are fixedly connected to the top of the cylinder (1), and the two support plates (6) are respectively located on both sides of the air inlet pipe (8). A fixing plate (7) is fixedly connected to the top of the two support plates (6), and a fixing groove is provided on the top of the fixing plate (7). The air inlet pipe (8) passes through the fixing groove, and the air inlet pipe (8) is fixedly connected to the fixing groove.

4. A reactor for preparing battery-grade lithium carbonate according to claim 2, Features: The side wall of the cylinder (1) is fixedly connected to a mounting frame (4), the top of the mounting frame (4) is fixedly mounted with a motor (5), the output end of the motor (5) passes through the side wall of the cylinder (1), and the output end of the motor (5) is fixedly connected to a first bevel gear (11).

5. A reactor for preparing battery-grade lithium carbonate according to claim 4, Features: The first bevel gear (11) is meshed with the second bevel gear (12), and the first bevel gear (11) is meshed with the third bevel gear (15).

6. A reactor for preparing battery-grade lithium carbonate according to claim 1, Features: The top of the cylinder (1) is connected to a feed pipe (2), and the side wall of the cylinder (1) is connected to a discharge pipe (3).

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