Lithium carbonate reaction device

Abstract

The utility model provides a lithium carbonate reaction device. The lithium carbonate reaction device comprises a reaction part, and the reaction part is provided with a reaction cavity, an opening, a solid outlet and a liquid outlet, the feeding part comprises a feeding pipeline and an annular pipeline communicated with the feeding pipeline, the feeding part is located above the opening, the annular pipeline is provided with a plurality of discharging units, the discharging units are arranged in the circumferential direction of the annular pipeline, and materials enter the opening through the feeding pipeline and the discharging units in sequence. According to the technical scheme, the problem that a lithium carbonate reaction device in the prior art is difficult to discharge is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium carbonate preparation technical field, specifically, relate to a lithium carbonate reaction device. BACKGROUND

[0002] Type II lithium carbonate (industrial lithium carbonate) is an important lithium salt compound, which has a wide range of applications in industry. In general, the production of industrial lithium carbonate uses a lithium sinker crystallizer. The crystallizer, as a reaction device for industrial lithium carbonate, is composed of a speed reducer, a stirring shaft, a center cylinder, a flow guide cylinder, an overflow tank, a crystallizer shell, a feed pipeline, a liquid inlet pipeline, and a bottom flow pipeline. Lithium chloride mother liquor enters the crystallizer through the feed pipeline, and sodium carbonate solution enters the crystallizer through the liquid inlet pipeline. Under the action of the stirring shaft, the lithium chloride mother liquor and the sodium carbonate solution in the crystallizer can be stirred to generate lithium carbonate crystals.

[0003] Due to the large flow of lithium chloride mother liquor, when the lithium chloride mother liquor enters the crystallizer through the feed pipeline, on the one hand, the lithium chloride mother liquor will come into contact with the liquid surface of the sodium carbonate solution. The contact between the lithium chloride mother liquor and the sodium carbonate solution will generate an impact force, which will cause the lithium chloride mother liquor to splash in the crystallizer, resulting in the generated lithium carbonate crystals condensing on the inner wall of the stirring shaft and the flow guide cylinder. Over time, the mass of the lithium carbonate crystals will become larger, causing the lithium carbonate crystals to fall to the bottom of the crystallizer. This will cause the bottom flow pipeline to be blocked, making it difficult to discharge the crystallizer. On the other hand, due to the formation of a stream when the lithium chloride mother liquor enters the crystallizer through the feed pipeline, the reaction between the lithium chloride mother liquor and the sodium carbonate solution will not be complete, which will affect the quality and yield of the lithium carbonate crystal production. SUMMARY

[0004] The main purpose of the present utility model is to provide a lithium carbonate reaction device to solve the problem of difficult discharge in the prior art.

[0005] To achieve the above purpose, the utility model provides a lithium carbonate reaction device, which comprises a reaction part with a reaction cavity, an opening, a solid outlet, and a liquid outlet; a feed part comprising a feed pipeline and an annular pipeline connected to the feed pipeline, the feed part being located above the opening, the annular pipeline having a plurality of discharge units arranged along the circumference of the annular pipeline, and the material entering the opening in sequence through the feed pipeline and the plurality of discharge units.

[0006] Further, each discharge unit comprises a plurality of discharge holes spaced along the height direction of the reaction cavity.

[0007] Further, along the height direction of the reaction cavity, the inner diameters of the plurality of discharge holes of each discharge unit decrease successively from top to bottom.

[0008] Further, the annular pipeline is further provided with a plurality of discharge ports, the plurality of discharge ports are arranged at intervals along the circumference of the annular pipeline, the plurality of discharge ports are located on the side opposite to the discharge port of the annular pipeline, and the cross-sectional area of each discharge port is greater than the cross-sectional area of any one of the plurality of discharge holes.

[0009] Further, the feed pipeline comprises a feed main pipe and a plurality of feed branch pipes in communication with the feed main pipe, and the plurality of feed branch pipes are in communication with the annular pipeline.

[0010] Further, the feed pipeline comprises a feed main pipe and a plurality of feed branch pipes in communication with the feed main pipe, and the plurality of feed branch pipes are in communication with the annular pipeline.

[0011] Further, the reaction part comprises: an outer shell; a reaction cylinder having the reaction cavity and an opening and a bottom flow port in communication with the reaction cavity; an overflow cylinder located between the inner wall of the outer shell and the outer wall of the reaction cylinder, the top end of the overflow cylinder being lower than the top end of the reaction cylinder, the bottom end of the overflow cylinder being connected with the outer shell, the overflow passage being formed between the outer wall of the reaction cylinder and the inner wall of the overflow cylinder, the buffer cavity being formed between the outer shell and the outer wall of the overflow cylinder, the bottom end of the overflow passage being in communication with the bottom flow port, the top end of the overflow passage being in communication with the buffer cavity, the bottom of the outer shell being provided with a solid outlet in communication with the bottom flow port, and the outer shell being further provided with a liquid outlet in communication with the buffer cavity.

[0012] Further, the lithium carbonate reaction device further comprises a discharge pipe in communication with the solid outlet, the discharge pipe being provided with a first valve, a second valve, a third valve and a transfer pump, the transfer pump being located between the second valve and the third valve.

[0013] Further, the lithium carbonate reaction device further comprises a stirring member, the stirring member comprising a motor, a rotating shaft connected with the output shaft of the motor and a stirring impeller connected to the outer periphery of the rotating shaft, the rotating shaft being rotatably arranged relative to the reaction part, and the stirring impeller being located in the reaction cavity.

[0014] Further, the lithium carbonate reaction device further comprises a liquid inlet part having a liquid inlet and a liquid outlet, the liquid outlet being in communication with the opening, and the liquid inlet being configured to introduce a sodium carbonate solution.

[0015] The technical scheme of the utility model discloses, material flows into annular pipeline from feed pipeline, and through multiple discharge units, material can enter into reaction cavity through multiple discharge units of annular pipeline, compared with prior art, only through setting feed pipeline to pass material into reaction cavity, in the embodiment, through additionally setting annular pipeline and multiple discharge units, on the one hand, the impact force of material flowing into reaction cavity can be reduced, so as to reduce the probability of material splashing in reaction cavity, thereby reducing the probability of lithium carbonate condensation on the inner wall of reaction cavity, so that the phenomenon of lithium carbonate falling to the bottom of lithium carbonate reaction device can be reduced, so as to reduce the probability of solid outlet of lithium carbonate reaction device being blocked and difficult to discharge, on the other hand, the probability of material entering into reaction cavity to form a stream can also be reduced, so as to avoid the phenomenon of incomplete and incomplete reaction of material in reaction cavity, and further avoid the phenomenon of affecting the quality and yield of lithium carbonate production. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the present application, and together with the description, explain the present application. The embodiments of the present application and its description are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 The structure of the embodiment of the lithium carbonate reaction device of the utility model is shown in the structure schematic view.

[0018] Figure 2 The structure of the feed part of the lithium carbonate reaction device of the utility model is shown in the structure schematic view. Figure 1

[0019] Among them, the above-mentioned drawings include the following signs:

[0020] 1, shell, 2, motor, 3, feed main pipe, 4, first flowmeter, 5, first regulating valve, 6, second flowmeter, 7, feed branch pipe, 8, overflow cylinder, 9, second regulating valve, 10, liquid outlet, 11, reaction cylinder, 12, liquid inlet part, 13, rotating shaft, 14, stirring impeller, 15, discharge pipe, 16, first valve, 17, second valve, 18, third valve, 19, material rotating pump, 20, solid outlet, 21, discharge port, 22, discharge unit, 23, annular pipeline, 25, reaction cavity, 27, overflow channel, 28, buffer cavity. DETAILED DESCRIPTION

[0021] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0022] It should be noted that in the embodiments of the utility model, the height direction of the reaction cavity 25 is​Figure 1 The radial direction of the reaction cavity 25 is perpendicular to the height direction of the reaction cavity 25.

[0023] As shown in Figure 1 and Figure 2 The embodiment of the utility model provides a lithium carbonate reaction device. The lithium carbonate reaction device includes a reaction part, the reaction part has a reaction cavity 25 and the opening, solid outlet 20 and liquid outlet that communicate with reaction cavity 25, feed part, including feed pipe line and the annular pipe 23 that communicate with feed pipe line, feed part is located the top of opening, the annular pipe 23 is equipped with a plurality of discharge units 22, a plurality of discharge units 22 are arranged along the circumference of annular pipe 23, and the material sequentially enters the opening through feed pipe line and a plurality of discharge units 22.

[0024] In the above technical solution, the material flows into the annular pipe 23 from the feed pipe line, and flows into the opening through the plurality of discharge units 22. In this way, the material can enter the reaction cavity 25 through the plurality of discharge units 22 of the annular pipe 23. Compared with the prior art in which the material is only introduced into the reaction cavity 25 through the feed pipe line, in the embodiment, the annular pipe 23 and the plurality of discharge units 22 are additionally provided. On the one hand, this can reduce the impact force of the material flowing into the reaction cavity 25, thereby reducing the probability of splashing of the material in the reaction cavity 25, and thus reducing the probability of condensation of lithium carbonate on the inner wall of the reaction cavity 25. This can reduce the phenomenon of lithium carbonate falling to the bottom of the lithium carbonate reaction device, thereby reducing the probability of blockage of the solid outlet 20 of the lithium carbonate reaction device. On the other hand, this can also reduce the probability of the material forming a stream when entering the reaction cavity 25, thereby avoiding the phenomenon of incomplete or incomplete reaction of the material in the reaction cavity 25, and further avoiding the phenomenon of affecting the quality and yield of lithium carbonate production.

[0025] It should be noted that in the embodiment of the utility model, the material is lithium chloride mother liquor, the reaction cavity 25 contains sodium carbonate solution, and the lithium chloride mother liquor is introduced into the reaction cavity 25 containing the sodium carbonate solution through the annular pipe 23.

[0026] It should be noted that in the embodiment of the utility model, the stream refers to a relatively independent liquid flow.

[0027] Specifically, in the embodiment of the utility model, the annular pipe 23 is a circular coil pipe, the circular coil pipe is a DN80 pipe, that is, the nominal diameter of the circular coil pipe is 80 mm, and the circular coil pipe is located above the reaction part. The distance between the circular coil pipe and the liquid level of the reaction solution formed by the sodium carbonate solution and the lithium chloride mother liquor in the reaction part is 100 mm. In this way, it can be ensured that the sodium carbonate solution does not contact the circular coil pipe during the reaction.

[0028] As shown in Figure 1 andFigure 2 As shown in the embodiment of the utility model, each discharge unit 22 includes a plurality of discharge holes, and the plurality of discharge holes are arranged along the height direction of the reaction cavity 25.

[0029] Through the above arrangement, on the one hand, the discharge amount of the material can be further increased, thereby improving the production rate of lithium carbonate; on the other hand, the material can flow into the reaction cavity 25 along the height direction of the reaction cavity 25 and the circumferential direction of the annular pipeline 23 through the plurality of discharge holes, thereby avoiding the material from impacting a certain area in the reaction cavity 25, so that the reaction of the material in the reaction cavity 25 is more uniform.

[0030] Preferably, in the embodiment of the utility model, the plurality of discharge holes of each discharge unit 22 are uniformly and spacedly arranged along the height direction of the reaction cavity 25.

[0031] Specifically, in the embodiment of the utility model, the shape of each discharge hole is circular.

[0032] As shown in the embodiment of the utility model, the inner diameter of the plurality of discharge holes of each discharge unit 22 decreases successively from top to bottom along the height direction of the reaction cavity 25. Figure 1 Figure 2 In the above technical solution, compared with the inner diameter of the plurality of discharge holes successively increasing from top to bottom along the height direction of the reaction cavity 25, in the embodiment, the probability of the material splashing when flowing into the reaction cavity 25 can be further reduced, thereby further reducing the probability of lithium carbonate condensing on the inner wall of the reaction cavity 25, and further reducing the probability of lithium carbonate falling to the bottom of the lithium carbonate reaction device, so that the probability of the lithium carbonate reaction device being difficult to discharge can be reduced.

[0033] In one embodiment, the inner diameter of the plurality of discharge holes of each discharge unit 22 is equal from top to bottom along the height direction of the reaction cavity 25.

[0034] In the prior art, when the material flow is too large, the material is difficult to flow out from the plurality of discharge units 22 of the annular pipeline 23 in time, therefore, as shown in the embodiment of the utility model, the annular pipeline 23 is further provided with a plurality of discharge ports 21, the plurality of discharge ports 21 are spacedly arranged along the circumferential direction of the annular pipeline 23, the plurality of discharge ports 21 are located on the side opposite to the opening of the annular pipeline 23, and the cross-sectional area of each discharge port 21 is greater than the cross-sectional area of any one of the plurality of discharge holes.

[0035] Figure 1 Figure 2

[0036] ​​​​Through the above arrangement, when the flow of the material is too large, the material can flow from the multiple discharge ports 21 to the opening, so that the material can be uniformly distributed in the reaction cavity 25, so that the material can be fully reacted in the reaction cavity 25, so that the problem that the material is difficult to flow out from the annular pipeline 23 in time when the flow of the material is too large in the prior art can be solved.

[0037] Preferably, in the embodiment of the utility model, the number of the discharge ports 21 is four, and the multiple discharge ports 21 are uniformly distributed on the annular pipeline 23.

[0038] Specifically, in the embodiment of the utility model, the shape of the discharge port 21 is rectangular.

[0039] As shown in Figure 1 and Figure 2 In the embodiment of the utility model, the feed pipeline comprises a feed main pipe 3 and multiple feed branch pipes 7 in communication with the feed main pipe 3, and the multiple feed branch pipes 7 are all in communication with the annular pipeline 23.

[0040] In the above technical solution, the material can flow into the annular pipeline 23 from the multiple feed branch pipes 7 through the feed main pipe 3, and then flow into the reaction cavity 25 from the multiple discharge holes of the annular pipeline 23, so that the material can be fully reacted in the reaction cavity 25.

[0041] As shown in Figure 1 and Figure 2 In the embodiment of the utility model, the number of the feed branch pipes 7 is two, the feed main pipe 3 is provided with a first flow meter 4, one of the two feed branch pipes 7 is provided with a second flow meter 6 and a first regulating valve 5, and the other of the two feed branch pipes 7 is provided with a second regulating valve 9.

[0042] Through the above arrangement, the flow of the feed main pipe 3 and the two feed branch pipes 7 can be known, and when the discharge of the two feed branch pipes 7 is not smooth, the opening size of the first regulating valve 5 and the second regulating valve 9 can be respectively remotely adjusted, so that the material can uniformly enter the annular pipeline 23, so that the material can uniformly and slowly flow into the reaction cavity 25 through the multiple discharge holes, so that the material can be fully reacted in the reaction cavity 25.

[0043] Specifically, in the embodiment of the utility model, along the radial direction of the reaction cavity 25, the two feed branch pipes 7 are symmetrically connected to the two sides of the annular pipeline 23.

[0044] Specifically, in the embodiment of the utility model, the first flow meter 4 and the second flow meter 6 are both controlled by a DCS (Distributed Control System) to control the flow of the material.

[0045] Specifically, in an embodiment of this utility model, when the feed flow rate of the feed manifold 3 is less than or equal to 15m³, 3 At a rate of / h, the material will flow from the smallest discharge hole of each discharge unit 22 into the reaction chamber 25. When the feed flow rate of the feed main pipe 3 is 15m³ / h, 3 / h to 25m 3 When the flow rate is between 25 m³ / h, the material will flow from multiple discharge holes of each discharge unit 22 into the reaction chamber 25. When the feed flow rate of the feed manifold 3 is greater than 25 m³ / h... 3 At a flow rate of / h, materials can flow out from multiple discharge units 22 and multiple discharge ports 21. This ensures that materials can enter the reaction chamber 25 evenly, uniformly and slowly at different feed flow rates, so that the materials can react fully in the reaction chamber 25.

[0046] Specifically, in the embodiments of this utility model, the flow rate of the other feed branch pipe 7 of the two feed branch pipes 7 can be determined by the flow rate detected by the first flow meter 4 and the second flow meter 6.

[0047] like Figure 1 As shown, in an embodiment of this utility model, the reaction section includes a shell 1; a reaction cylinder 11, which has the aforementioned reaction chamber 25 and an opening and a bottom outlet communicating with the reaction chamber 25; and an overflow cylinder 8, located between the inner wall of the shell 1 and the outer wall of the reaction cylinder 11. The top end of the overflow cylinder 8 is lower than the top end of the reaction cylinder 11, and the bottom end of the overflow cylinder 8 is connected to the shell 1. An overflow channel 27 is formed between the outer wall of the reaction cylinder 11 and the inner wall of the overflow cylinder 8. A buffer chamber 28 is formed between the outer wall of the shell 1 and the outer wall of the overflow cylinder 8. The bottom end of the overflow channel 27 is connected to the bottom outlet, and the top end of the overflow channel 27 is connected to the buffer chamber 28. A solid outlet 20 communicating with the bottom outlet is provided on the bottom of the shell 1, and a liquid outlet 10 communicating with the buffer chamber 28 is also provided on the shell 1.

[0048] In the above technical solution, the lithium carbonate generated in the reaction cylinder settles to the bottom outlet under the action of gravity and is discharged through the solid outlet 20. The liquid generated in the reaction cylinder flows from the bottom outlet through the overflow channel to the buffer chamber 28, and then flows from the buffer chamber 28 to the liquid outlet 10 for recycling.

[0049] Specifically, in the embodiments of this utility model, the liquid generated in the reaction cylinder is a clear liquid, which is a sodium chloride solution generated by the reaction of lithium chloride mother liquor and sodium carbonate solution.

[0050] Preferably, in an embodiment of the present invention, an overflow port is formed at the top of the overflow channel, and the top of the overflow cylinder 8 is serrated, so that the clear water flows out from the overflow port and carries away some sodium ions.

[0051] Specifically, in an embodiment of this invention, the reaction liquid level of the material in the reaction chamber 25 is lower than the opening of the reaction chamber 25.

[0052] Specifically, in the embodiment of the present application, the reaction cylinder is a cylinder.

[0053] As shown in the figure, in the embodiment of the present application, the lithium carbonate reaction device further comprises a discharge pipe 15, the discharge pipe 15 is in communication with the solid outlet 20, and the discharge pipe 15 is provided with a first valve 16, a second valve 17, a third valve 18 and a material transfer pump 19. Figure 1 In the above technical solution, the lithium carbonate generated in the reaction cylinder flows into the discharge pipe 15 through the solid outlet 20, and the lithium carbonate is transferred through the first valve 16, the second valve 17, the third valve 18 and the material transfer pump 19.

[0054] Specifically, in the embodiment of the present application, the material transfer pump 19 is located between the second valve 17 and the third valve 18, and the first valve 16, the second valve 17 and the third valve 18 are ball valves.

[0055] Specifically, in the embodiment of the present application, the material transfer pump 19 can transfer the lithium carbonate to the belt machine high tank, and the frequency of the material transfer pump 19 can be adjusted to make the lithium carbonate flow out stably, so as to ensure the stability of the product quality.

[0056] As shown in the figure, in the embodiment of the present application, the lithium carbonate reaction device further comprises a stirring member, the stirring member comprises a motor 2, a rotating shaft 13 connected with the output shaft of the motor 2 and a stirring impeller 14 connected to the outer periphery of the rotating shaft 13, the rotating shaft 13 is rotatably arranged relative to the reaction part, and the stirring impeller 14 is located in the reaction cavity 25.

[0057] Figure 1 In the above technical solution, the motor 2 can drive the rotating shaft 13 to rotate through the output shaft, so as to make the stirring impeller 14 rotate, so that the material can be fully stirred in the reaction cavity 25.

[0058] As shown in the figure, in the embodiment of the present application, the lithium carbonate reaction device further comprises a liquid inlet part 12, the liquid inlet part 12 has a liquid inlet and a liquid outlet, the liquid outlet is in communication with the opening, and the liquid inlet is configured to introduce sodium carbonate solution.

[0059] Through the above setting, the sodium carbonate solution can flow into the opening through the liquid outlet from the liquid inlet, so that the sodium carbonate solution can react with the material to generate lithium carbonate. Figure 1

[0060]

[0061] ​​​Specifically, in the embodiment of the utility model, through recycling lithium ions in potassium fertilizer tail liquid, lithium in high magnesium and low lithium brine (magnesium lithium ratio is 500:1 or more) is selectively adsorbed by adsorbent, preliminary magnesium lithium separation is completed, and then lithium washing, desorption and other processes are carried out, finally lithium salt is separated and extracted from brine, and required lithium salt product, i.e., lithium chloride mother liquor, is obtained.

[0062] Specifically, the lithium carbonate reaction device of the embodiment of the utility model has the following advantages: by adopting the annular pipeline 23, on the one hand, the stock flow generated in the reaction cavity 25 is avoided, and on the other hand, the probability of splashing of the liquid level of the stock into the reaction cavity 25 is reduced, so that the probability of caking of the generated lithium carbonate on the outer periphery of the rotating shaft 13 and the inner wall of the reaction cavity 25 is reduced, thereby reducing the probability of the gradually formed large block of lithium carbonate falling into the bottom of the reaction cavity 25 and thereby blocking the solid outlet 20, and further avoiding the phenomenon of affecting the stable operation of the lithium carbonate reaction device; the annular pipeline 23 enables the stock to enter the reaction cavity 25 evenly, uniformly and slowly, and fully react with the sodium carbonate solution under the action of stirring, thereby effectively improving the product quality; the annular pipeline 23 can remotely control the first adjusting valve 5 and the second adjusting valve 9 of the two feed branch pipes 7 to adjust the flow rate, so that the flow is stable and uniform and flows into the reaction cavity 25 to react with the sodium carbonate solution, the annular pipeline 23 can continuously and stably operate, the automation level is high, the service life of the lithium carbonate reaction device is prolonged, the cleaning frequency is reduced, the product quality is improved, and certain economic benefits are achieved.

[0063] From the above description, it can be seen that the embodiment of the utility model realizes the following technical effects: the stock flows into the annular pipeline from the feed pipeline and flows into the opening through the plurality of discharge units, so that the stock can enter the reaction cavity through the plurality of discharge units of the annular pipeline, compared with the prior art in which the stock is only passed into the reaction cavity through the feed pipeline, in the embodiment, the annular pipeline and the plurality of discharge units are additionally provided, on the one hand, the impact force of the stock flowing into the reaction cavity is reduced, so that the probability of splashing of the stock in the reaction cavity is reduced, thereby reducing the probability of the lithium carbonate condensing on the inner wall of the reaction cavity, so that the phenomenon of the lithium carbonate falling to the bottom of the lithium carbonate reaction device is reduced, thereby reducing the probability of the solid outlet of the lithium carbonate reaction device being blocked and causing difficulty in discharging; on the other hand, the probability of the stock forming a stock flow when entering the reaction cavity is also reduced, thereby avoiding the phenomenon of incomplete and incomplete reaction of the stock in the reaction cavity, and further avoiding the phenomenon of affecting the quality and yield of lithium carbonate production.

[0064] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A lithium carbonate reaction apparatus characterized by comprising: The application relates to a reaction device for preparing a solid-liquid mixture, comprising: a reaction part having a reaction cavity (25) and an opening, a solid outlet (20) and a liquid outlet (10) in communication with the reaction cavity (25); a feeding part comprising a feeding pipeline and an annular pipeline (23) in communication with the feeding pipeline, the feeding part being located above the opening, the annular pipeline (23) being provided with a plurality of discharging units (22) arranged along the circumference of the annular pipeline (23), and material entering the opening through the feeding pipeline and the plurality of discharging units (22) in sequence.

2. The lithium carbonate reaction apparatus of claim 1, wherein, Each of the discharging units (22) comprises a plurality of discharging holes arranged at intervals along the height direction of the reaction cavity (25).

3. The lithium carbonate reaction apparatus of claim 2, wherein, The inner diameters of the plurality of discharging holes of each of the discharging units (22) decrease in sequence from top to bottom along the height direction of the reaction cavity (25).

4. The lithium carbonate reaction apparatus of claim 2, wherein, The annular pipeline (23) is further provided with a plurality of discharging ports (21) arranged at intervals along the circumference of the annular pipeline (23), the plurality of discharging ports (21) being located on the side of the annular pipeline (23) away from the opening, and the cross-sectional area of each of the discharging ports (21) being greater than that of any one of the plurality of discharging holes.

5. The lithium carbonate reaction apparatus according to any one of claims 1 to 4, characterized by, The feeding pipeline comprises a feeding main pipeline (3) and a plurality of feeding branch pipelines (7) in communication with the feeding main pipeline (3), and the plurality of feeding branch pipelines (7) are all in communication with the annular pipeline (23).

6. The lithium carbonate reaction apparatus of claim 5, wherein, The feeding main pipeline (3) is provided with a first flow meter (4), one of the two feeding branch pipelines (7) is provided with a second flow meter (6) and a first adjusting valve (5), and the other of the two feeding branch pipelines (7) is provided with a second adjusting valve (9).

7. The lithium carbonate reaction apparatus according to any one of claims 1 to 4, characterized by The reaction part comprises: an outer shell (1); a reaction cylinder (11) having the above-mentioned reaction cavity (25) and the opening and a bottom flow port in communication with the reaction cavity (25); an overflow cylinder (8) located between the inner wall of the outer shell (1) and the outer wall of the reaction cylinder (11), the top end of the overflow cylinder (8) being lower than the top end of the reaction cylinder (11), the bottom end of the overflow cylinder (8) being connected with the outer shell (1), an overflow channel (27) being formed between the outer wall of the reaction cylinder (11) and the inner wall of the overflow cylinder (8), a buffer cavity (28) being formed between the outer shell (1) and the outer wall of the overflow cylinder (8), the bottom end of the overflow channel (27) being in communication with the bottom flow port, the top end of the overflow channel (27) being in communication with the buffer cavity (28), the bottom of the outer shell (1) being provided with the solid outlet (20) in communication with the bottom flow port, and the outer shell (1) being further provided with the liquid outlet (10) in communication with the buffer cavity (28).

8. The lithium carbonate reaction apparatus of claim 7, wherein, The lithium carbonate reaction device further comprises a discharge pipe (15) in communication with the solid outlet (20), wherein the discharge pipe (15) is provided with a first valve (16), a second valve (17), a third valve (18) and a material transfer pump (19), and the material transfer pump (19) is located between the second valve (17) and the third valve (18).

9. The lithium carbonate reaction apparatus according to any one of claims 1 to 4, characterized by The lithium carbonate reaction device further comprises a stirring member, wherein the stirring member comprises a motor (2), a rotating shaft (13) connected to an output shaft of the motor (2) and stirring impellers (14) connected to the outer periphery of the rotating shaft (13), the rotating shaft (13) is rotatably arranged relative to the reaction part, and the stirring impellers (14) are located in the reaction cavity (25).

10. The lithium carbonate reaction apparatus according to any one of claims 1 to 4, characterized by The lithium carbonate reaction device further comprises a liquid inlet part (12), wherein the liquid inlet part (12) has a liquid inlet and a liquid outlet, the liquid outlet is in communication with the opening, and the liquid inlet is configured to introduce a sodium carbonate solution.

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