CN219596623U

CN219596623U - Reaction equipment for producing battery-grade lithium carbonate

Info

Publication number: CN219596623U
Application number: CN202320547225.3U
Authority: CN
Inventors: 周有池; 晏健; 曾位勇; 晏志辉; 周春来
Original assignee: Jiangxi Huiteng New Energy Co ltd
Current assignee: Jiangxi Huiteng New Energy Co ltd
Priority date: 2023-03-20
Filing date: 2023-03-20
Publication date: 2023-08-29
Anticipated expiration: 2033-03-20

Abstract

The utility model discloses reaction equipment for producing battery-grade lithium carbonate, which relates to the technical field of lithium carbonate production and comprises a reaction kettle, a discharge port arranged on the reaction kettle, a first feed hopper and a second feed hopper, wherein the first feed hopper is in through connection with the reaction kettle through a first feed pipe, and the second feed hopper is in through connection with the reaction kettle through a second feed pipe; the utility model discloses a reaction kettle, including second inlet pipe, sealing door and reation kettle, the circulation mouth has been seted up to the position department that corresponds with the second inlet pipe on the reation kettle, the sliding is provided with the sealing door in the circulation mouth, and is provided with the elastic component between sealing door and the reation kettle, be provided with the guide plate on the sealing door. According to the utility model, the flow guide plate is arranged, so that the solution flowing out of the first feed pipe is contacted with the liquid flowing out of the second feed hopper, and the premixing reaction of the sodium carbonate solution and the lithium sulfate solution is realized while feeding and before stirring, so that the subsequent stirring is more uniform, the stirring time and the reaction rate are reduced, and the quality of a lithium carbonate finished product is improved.

Description

Reaction equipment for producing battery-grade lithium carbonate

Technical Field

The utility model relates to the technical field of lithium carbonate production, in particular to reaction equipment for producing battery-grade lithium carbonate.

Background

Lithium sulfate is used as a raw material, lithium carbonate is produced through precipitation reaction, which is a main flow process for producing battery grade lithium carbonate at present, and lithium sulfate solution and sodium carbonate solution are reacted and precipitated under the high temperature condition to obtain a crude product of lithium carbonate. When the battery grade lithium carbonate is produced, if the solution is mixed unevenly, the crystallization rate of each layer of the solution is different, the crystallization particle size is uneven, and the crystallization effect and the quality of the finished product are affected.

The prior patent is as Chinese patent publication number: CN205700538U, entitled "an internal and external temperature-adjusting reaction kettle", the patent comprising a reaction kettle body, a reaction kettle jacket, a stirrer, and a reaction kettle support, characterized in that the reaction kettle body is disposed on the reaction kettle support; at least one reaction kettle feed inlet is arranged at the upper end of the reaction kettle body; the lower end of the reaction kettle body is provided with a reaction kettle discharge hole; the reaction kettle jacket is arranged on the outer side of the reaction kettle body; an external heat exchange cavity is formed between the reaction kettle jacket and the reaction kettle body; the lower end of the reaction kettle jacket is provided with a reaction kettle jacket water inlet; the upper end of the reaction kettle jacket is provided with a reaction kettle jacket water outlet; the stirrer is arranged on the central line of the reaction kettle body; the stirrer comprises a servo motor, a stirring shaft and a stirring paddle. The stirring device is used for carrying out the reaction production of lithium carbonate, and when in use, the raw materials entering the kettle are stirred by the stirrer, so that the raw materials cannot be premixed before stirring.

The prior art has the following defects: in the above patent, the reaction equipment of lithium carbonate in the prior art is only provided with a stirrer in the reaction kettle, and can not pre-react the solution before stirring, so as to ensure uniform stirring, longer stirring time and slower reaction rate. Accordingly, a reaction apparatus for producing battery grade lithium carbonate is provided by those skilled in the art to solve the problems set forth in the background art described above.

Disclosure of Invention

The utility model aims to provide a reaction device for producing battery-grade lithium carbonate, which solves the defects in the prior art.

In order to achieve the above object, the present utility model provides the following technical solutions: the reaction equipment for producing the battery-grade lithium carbonate comprises a reaction kettle, a discharge port arranged on the reaction kettle, a first feed hopper and a second feed hopper, wherein the first feed hopper is in through connection with the reaction kettle through a first feed pipe, and the second feed hopper is in through connection with the reaction kettle through a second feed pipe; the utility model discloses a reaction kettle, including sealing door, baffle, first inlet pipe, second inlet pipe, sealing door is provided with the circulation mouth in the position department that corresponds with the second inlet pipe on the reation kettle, the sliding is provided with the sealing door in the circulation mouth, and is provided with the elastic component between sealing door and the reation kettle, be provided with the guide plate on the sealing door, first inlet pipe is just to the guide plate.

As a further description of the above technical solution: the elastic piece is a pressure spring, and the elastic acting force of the elastic piece enables the sealing door to seal the circulation port.

As a further description of the above technical solution: the stirring scraping assembly is arranged in the reaction kettle, and a driving motor for driving the stirring scraping assembly is arranged at the bottom of the reaction kettle.

As a further description of the above technical solution: the stirring scraping assembly comprises a stirring shaft which is rotatably arranged in the reaction kettle, a stirring rod is fixedly arranged on the stirring shaft, a connecting rod is arranged on one side of the stirring rod, and a plurality of scraping plates are hinged to the connecting rod.

As a further description of the above technical solution: each scraping plate is rotationally connected with the connecting rod through a hinge shaft, and a torque spring is arranged on the hinge shaft.

As a further description of the above technical solution: the elastic force of the torque spring enables each scraper to maintain an inclined state.

As a further description of the above technical solution: the bottoms and the tops of two adjacent scrapers are on the same horizontal line.

As a further description of the above technical solution: the sealing door is provided with a sealing element.

According to the reaction equipment for producing battery-level lithium carbonate, provided by the utility model, the solution flowing out of the first feeding pipe falls on the guide plate through the guide plate, the sealing door is opened by utilizing the gravity of the liquid, so that the liquid in the second feeding hopper flows into the guide plate to be contacted with the liquid flowing out of the first feeding hopper, the pre-mixing reaction of the sodium carbonate solution and the lithium sulfate solution is realized during feeding and before stirring, the subsequent stirring is more uniform, the stirring time and the reaction rate are reduced, and meanwhile, the stirring scraping assembly arranged in a matched manner not only can mix and stir the solution, but also can scrape the materials or crystals adhered to the inner wall of the reaction kettle, so that the materials are more uniformly mixed, and the quality of a lithium carbonate finished product is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic structural view of a reaction apparatus for producing battery grade lithium carbonate;

FIG. 2 is an enlarged view of part of A in a reaction apparatus for producing battery grade lithium carbonate;

FIG. 3 is a schematic view of a stirring and scraping assembly in a reaction apparatus for producing battery grade lithium carbonate;

fig. 4 is a schematic view showing a mounting structure of a scraper in a reaction apparatus for producing battery-grade lithium carbonate.

Reference numerals illustrate:

1. a reaction kettle; 2. a first feed hopper; 3. a first feed tube; 4. a second feed hopper; 5. a second feed tube; 6. a discharge port; 7. a stirring scraping assembly; 71. a stirring shaft; 72. a stirring rod; 73. a connecting rod; 74. a scraper; 75. a torque spring; 8. a driving motor; 9. sealing the door; 10. an elastic member; 11. a deflector; 12. a flow port.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

Referring to fig. 1-4, the embodiment of the present utility model provides a technical solution: the reaction equipment for producing the battery-grade lithium carbonate comprises a reaction kettle 1, a discharge hole 6 arranged on the reaction kettle 1, a first feed hopper 2 and a second feed hopper 4, wherein the first feed hopper 2 and the reaction kettle 1 are in through connection through a first feed pipe 3, and the second feed hopper 4 and the reaction kettle 1 are in through connection through a second feed pipe 5; the position department that corresponds with second inlet pipe 5 on the reation kettle 1 has seted up circulation mouth 12, the interior sliding of circulation mouth 12 is provided with sealing door 9, sealing door 9 is along reation kettle 1 vertical slip, be used for realizing the sealed of circulation mouth 12, and be provided with elastic component 10 between sealing door 9 and the reation kettle 1, be provided with guide plate 11 on sealing door 9, first inlet pipe 3 is just to guide plate 11, so that the solution that first inlet pipe 3 flows falls on guide plate 11, utilize liquid gravity, drive guide plate 11 and move down, open circulation mouth 12, make the liquid inflow guide plate 11 in the second feeder hopper 4, with the liquid contact that first feeder hopper 2 flows out, realize the premixing reaction of sodium carbonate solution and lithium sulfate solution in the reinforced time, and when making guide plate 11 atress through elastic component 10 that sets up, can slide from top to bottom according to the flow size, improve premixing effect, set up the helicla on guide plate 11, the solution is in entering reation kettle 1 along the helicla groove, can prolong solution contact reaction time.

According to the utility model, through the guide plate 11, the solution flowing out of the first feeding pipe 3 falls on the guide plate 11, the sealing door 9 is opened by utilizing the gravity of the liquid, so that the liquid in the second feeding hopper 4 flows into the guide plate 11 and contacts with the liquid flowing out of the first feeding hopper 2, and the premixing reaction of the sodium carbonate solution and the lithium sulfate solution is realized during feeding and before stirring, so that the subsequent stirring is more uniform, the stirring time and the reaction rate are reduced, and the quality of the finished lithium carbonate product is improved.

In still another embodiment provided by the utility model, the elastic member 10 is a compression spring, the elastic force of the elastic member makes the sealing door 9 seal the circulation port 12, and the elastic force of the elastic member 10 can drive the baffle 11 to move upwards for resetting when the pressure of the baffle 11 disappears, and simultaneously, the elastic member can slide when the baffle 11 is stressed, so that the solution mixing efficiency is improved.

In still another embodiment provided by the utility model, the stirring scraping component 7 is arranged in the reaction kettle 1, the driving motor 8 for driving the stirring scraping component 7 is arranged at the bottom of the reaction kettle 1, and the stirring scraping component 7 can be used for stirring and mixing the solution, and meanwhile, the materials or crystals adhered to the inner wall of the reaction kettle 1 can be scraped, so that the materials are more uniformly mixed.

In still another embodiment provided by the utility model, the stirring scraping assembly 7 comprises a stirring shaft 71 rotatably arranged in the reaction kettle 1, a stirring rod 72 is fixedly arranged on the stirring shaft 71, a connecting rod 73 is arranged on one side of the stirring rod 72, a plurality of scraping plates 74 are hinged on the connecting rod 73, specifically, the stirring shaft 71 rotates to drive the stirring rod 72 to stir the solution, and meanwhile, the connecting rod 73 drives the scraping plates 74 to synchronously rotate along with the stirring rod 72 to scrape crystal materials adhered to the inner wall of the reaction kettle 1.

In still another embodiment provided by the utility model, each scraper 74 is rotatably connected with the connecting rod 73 through the hinge shaft, the torque spring 75 is arranged on the hinge shaft, the elasticity of the torque spring 75 enables each scraper 74 to maintain an inclined state (as shown in fig. 4), namely, an initial state when the scrapers 74 scrape materials, and when the scrapers 74 are subjected to resistance, the scrapers 74 can rotate left and right, in the design, the scrapers 74 are obliquely arranged, the scraping effect is not influenced, meanwhile, the scrapers 74 can rotate when the scrapers 74 touch the particle crystals, hard contact between the scrapers 74 and the particle crystals is avoided, meanwhile, crystal materials adhered to the inner wall of the reaction kettle 1 can be scraped, the solution mixing reaction effect is improved, the quality of lithium carbonate finished products is improved, and the reaction kettle 1 is convenient to clean.

In yet another embodiment of the present utility model, the bottom and top of two adjacent squeegees 74 are on the same horizontal line (as shown in fig. 3), avoiding a gap between two squeegees 74, ensuring the scraping effect.

In a further embodiment of the utility model, the sealing door 9 is provided with a sealing element, which is a sealing ring, for sealing the flow opening 12.

When the lithium carbonate stirring device is in actual use, firstly, the prepared lithium sulfate solution is added into the second feeding hopper 4, then the sodium carbonate solution is added into the first feeding hopper 2, the liquid in the first feeding hopper 2 falls on the guide plate 11 through the first feeding pipe 3, at the moment, the guide plate 11 moves downwards under the action of gravity, the sealing door 9 is driven to vertically slide downwards, the circulation port 12 is opened, the solution in the second feeding hopper 4 enters the guide plate 11 through the second feeding pipe 5, the two solutions are premixed on the guide plate 11 and flow into the reaction kettle 1 after mixing reaction along the spiral groove on the guide plate 11, the stirring shaft 71 is driven to rotate by the driving motor 8, so that the stirring rod 72 is driven to stir the solution, meanwhile, the connecting rod 73 drives the scraping plate 74 to synchronously rotate along with the stirring rod 72, when the scraping plate 74 receives resistance, namely, the scraping plate 74 can avoid hard contact between the scraping plate 74 and particle crystals, and simultaneously, the crystal materials adhered on the inner wall of the reaction kettle 1 can be scraped, and the mixing reaction effect of the solution is improved, and the quality of lithium carbonate finished products is improved.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims

1. The reaction equipment for producing the battery-grade lithium carbonate comprises a reaction kettle (1) and a discharge port (6) arranged on the reaction kettle (1), and is characterized by further comprising a first feed hopper (2) and a second feed hopper (4), wherein the first feed hopper (2) is in through connection with the reaction kettle (1) through a first feed pipe (3), and the second feed hopper (4) is in through connection with the reaction kettle (1) through a second feed pipe (5);

the utility model discloses a reaction kettle, including reation kettle (1), second inlet pipe (5) and sealing door (9), circulation mouth (12) have been seted up to the position department that corresponds with second inlet pipe (5), the interior sealing door (9) that is provided with of circulation mouth (12), and be provided with elastic component (10) between sealing door (9) and reation kettle (1), be provided with guide plate (11) on sealing door (9), first inlet pipe (3) are just to guide plate (11).

2. A reaction device for producing battery grade lithium carbonate according to claim 1, characterized in that the elastic element (10) is a compression spring, the elastic force of which causes the sealing door (9) to close the flow opening (12).

3. The reaction equipment for producing battery grade lithium carbonate according to claim 1, wherein a stirring scraping component (7) is arranged in the reaction kettle (1), and a driving motor (8) for driving the stirring scraping component (7) is arranged at the bottom of the reaction kettle (1).

4. A reaction apparatus for producing battery grade lithium carbonate according to claim 3, wherein the stirring scraping assembly (7) comprises a stirring shaft (71) rotatably arranged in the reaction kettle (1), a stirring rod (72) is fixedly arranged on the stirring shaft (71), a connecting rod (73) is arranged on one side of the stirring rod (72), and a plurality of scraping plates (74) are hinged on the connecting rod (73).

5. The reaction apparatus for producing battery grade lithium carbonate according to claim 4, wherein each scraper (74) is rotatably connected to a link (73) by a hinge shaft, and a torque spring (75) is provided on the hinge shaft.

6. The reaction apparatus for producing battery grade lithium carbonate according to claim 5, wherein the elastic force of the torsion spring (75) keeps each of the scrapers (74) in an inclined state.

7. A reaction apparatus for producing battery grade lithium carbonate according to claim 5, wherein the bottom and top of two adjacent scrapers (74) are on the same level.

8. A reaction device for producing battery grade lithium carbonate according to claim 1, characterized in that the sealing door (9) is provided with a seal.