CN219463354U - Battery grade lithium carbonate production facility - Google Patents
Battery grade lithium carbonate production facility Download PDFInfo
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- CN219463354U CN219463354U CN202223378858.0U CN202223378858U CN219463354U CN 219463354 U CN219463354 U CN 219463354U CN 202223378858 U CN202223378858 U CN 202223378858U CN 219463354 U CN219463354 U CN 219463354U
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- carbonate production
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses battery-level lithium carbonate production equipment, which relates to the technical field of brine lithium extraction equipment and comprises a lithium carbonate production mechanism, wherein the lithium carbonate production mechanism is used for producing industrial-level lithium carbonate and lithium precipitation mother liquor; through the technical scheme provided by the application, compared with the existing lithium carbonate production equipment, the lithium carbonate production equipment provided by the utility model can convert the sodium sulfate solution in the primary lithium precipitation mother liquor into sulfuric acid and sodium hydroxide with high added values, and meanwhile, the fish gill-shaped carbon dioxide microbubble generating device can efficiently convert lithium carbonate into lithium bicarbonate, so that the yield of battery-level lithium carbonate products is improved.
Description
Technical Field
The utility model relates to the technical field of brine lithium extraction equipment, in particular to battery-grade lithium carbonate production equipment capable of achieving high-valued byproducts.
Background
Lithium is the lightest metal element in nature, is known as "21 st century energy metal", and metals and compounds thereof are widely used in the fields of batteries, glass ceramics, aerospace and the like. The upstream is mainly raw material; midstream is a product; downstream is the field of application, and for 2021 years, the global demand for lithium carbonate materials has exploded.
The traditional process for extracting lithium carbonate by taking lepidolite as a raw material mainly comprises a salt pressing method, an alkali pressing method, a sulfuric acid method, a sulfate method and the like, leached brine needs to be subjected to concentration and impurity removal stages, the impurity removal thoroughness seriously influences the quality and the yield of lithium carbonate products, and in addition, a large amount of sodium sulfate exists in the brine prepared by the sulfate method and is finally converted into by-product anhydrous sodium sulfate, so that the added value is lower;
for salt lake brine, the purity of the industrial grade lithium carbonate is directly determined by the impurity removal process, if the industrial grade lithium carbonate needs to be further purified, carbonization, impurity removal and secondary lithium precipitation, and the sufficient contact between carbon dioxide and lithium carbonate in the carbonization process can effectively increase carbonization efficiency and improve the purity of the battery grade lithium carbonate, so that the development of a real-time, economical, efficient, low-carbon and environment-friendly lepidolite impurity removal and lithium precipitation device is important for efficiently producing the battery grade lithium carbonate product.
Disclosure of Invention
The utility model provides battery-level lithium carbonate production equipment, which can effectively improve the added value of byproducts by separating lithium precipitation mother liquor through an electric clean ion exchange membrane device, and can improve the production efficiency of battery-level lithium carbonate by means of a fish gill-shaped carbon dioxide microbubble generator.
The utility model provides battery-grade lithium carbonate production equipment, which comprises a lithium carbonate production mechanism, wherein the lithium carbonate production mechanism is used for producing industrial-grade lithium carbonate and lithium-precipitating mother liquor, the discharge end of the lithium carbonate production mechanism is respectively connected with an electric clean ion exchange membrane device and a carbonization mechanism, the electric clean ion exchange membrane device is used for separating sodium ions and sulfate ions in the lithium-precipitating mother liquor to obtain sulfuric acid and sodium hydroxide, the carbonization mechanism utilizes the industrial-grade lithium carbonate to obtain pure lithium bicarbonate solution, the discharge end of the carbonization mechanism is connected with a secondary lithium-precipitating mechanism, and the secondary lithium-precipitating mechanism utilizes the pure lithium bicarbonate solution to obtain battery-grade lithium carbonate.
Preferably, the lithium carbonate production mechanism comprises impurity ion removal equipment, a first filtering device, an ion exchange resin device, a first lithium precipitation kettle and a second filtering device, wherein the discharge end of the impurity ion removal equipment is connected with the feed end of the first filtering device, the discharge end of the first filtering device is connected with the feed end of the ion exchange resin device, the discharge end of the ion exchange resin device is connected with the feed end of the first lithium precipitation kettle, the discharge end of the first lithium precipitation kettle is connected with the feed end of the second filtering device, and the discharge end of the second filtering device is respectively connected with the electric clean ion exchange membrane device and the carbonization mechanism.
Preferably, the electric purification ion exchange membrane device comprises a feed inlet of lithium precipitation mother liquor, a discharge outlet of sulfuric acid and a discharge outlet of sodium hydroxide.
Preferably, the carbonization mechanism comprises a fish gill-shaped carbon dioxide microbubble generator and a third filtering device, wherein the fish gill-shaped carbon dioxide microbubble generator is connected to the solid discharge end of the second filtering device, and comprises a carbon dioxide air inlet, an industrial grade lithium carbonate inlet, a carbon dioxide air outlet, a lithium bicarbonate outlet and a fish gill-shaped carbon dioxide microbubble forming port.
Preferably, the secondary lithium deposition mechanism comprises a second lithium deposition kettle and a fourth filtering device, the second lithium deposition kettle is connected with a liquid outlet of the third filtering device, and a discharge end of the second lithium deposition kettle is connected with a feed end of the fourth filtering device.
Preferably, the second lithium precipitation tank converts the pure lithium bicarbonate solution into battery grade lithium carbonate by thermal separation and releases carbon dioxide.
Preferably, an air pipe is communicated between the second lithium precipitation kettle and the fish gill-shaped carbon dioxide microbubble generator, and the air pipe is used for enabling carbon dioxide to enter the fish gill-shaped carbon dioxide microbubble generator.
Preferably, the brine and filtrate are conveyed along the pipeline by a plurality of centrifugal pumps.
1. In the utility model, the main byproduct of the proposed battery-grade lithium carbonate production equipment is sodium sulfate, namely sodium sulfate powder, because lithium carbonate is produced by a sulfate method in the lithium carbonate production industry at present, and sulfate ions and sodium ions of sodium sulfate in lithium precipitation mother liquor can be effectively separated by utilizing an electric clean ion exchange membrane device, so that sulfuric acid and sodium hydroxide with high added values are obtained, and the added value of the byproduct is improved.
2. According to the battery-level lithium carbonate production equipment, the second lithium precipitation kettle converts pure lithium bicarbonate solution into battery-level lithium carbonate through thermal separation and releases carbon dioxide, the carbon dioxide enters the gill-shaped carbon dioxide microbubble generator and can be recycled, and compared with the direct carbon dioxide gas inlet, the carbon dioxide microbubble generator can form carbon dioxide microbubbles, so that the contact area of the lithium carbonate and the carbon dioxide can be effectively increased, efficient carbonization and impurity removal can be realized, and the battery-level lithium carbonate production equipment has the advantages of simple operation flow, low investment cost and high production efficiency.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
FIG. 1 is a front view of the structure of the present utility model;
FIG. 2 is a schematic diagram of an ion exchange membrane device of the present utility model;
FIG. 3 is a schematic diagram of a fish gill-shaped carbon dioxide microbubble generator of the present utility model.
In the figure, 11, impurity ion removing equipment; 12. a first filtering device; 13. an ion exchange resin device; 14. a first lithium precipitation kettle; 15. a second filtering device; 16. an electrocleaning ion exchange membrane device; 161. a feed inlet of lithium precipitation mother liquor; 162. a sulfuric acid discharge port; 163. a discharging hole of sodium hydroxide; 17. a fish gill-shaped carbon dioxide microbubble generator; 171. a carbon dioxide inlet; 172. an industrial grade lithium carbonate inlet; 173. a carbon dioxide exhaust port; 174. a lithium bicarbonate discharge port; 175. fish gill-shaped carbon dioxide microbubbles forming a mouth; 18. a third filtering device; 19. a second lithium precipitation kettle; 20. and a fourth filtering device.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.
It is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like are directional or positional relationships as indicated based on the drawings, merely to facilitate describing the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
A battery grade lithium carbonate production apparatus as shown in fig. 1-3:
referring to fig. 1, the utility model provides a high-efficiency battery-level lithium carbonate production device, which comprises a lithium carbonate production mechanism, and comprises an impurity ion removal device 11, a first filter device 12, an ion exchange resin device 13, a first lithium precipitation kettle 14 and a second filter device 15, wherein brine passes through, the discharge end of the impurity ion removal device 11 is connected with the feed end of the first filter device 12, the discharge end of the first filter device 12 is connected with the feed end of the ion exchange resin device 13, the discharge end of the ion exchange resin device 13 is connected with the feed end of the first lithium precipitation kettle 14, the discharge end of the first lithium precipitation kettle 14 is connected with the feed end of the second filter device 15, the discharge end of the second filter device 15 is respectively connected with an electric clean ion exchange membrane device 16 and a carbonization mechanism, the first filter device 12 is arranged at the downstream of the impurity ion removal device 11, and the filtered brine enters the first lithium precipitation kettle 14 through the ion exchange resin device 13 and is connected with the secondary filter device to be finally connected with the feed end of the electric clean ion exchange membrane device 16;
the electric clean ion exchange membrane device 16 is positioned behind the second filtering device 15, and filtered lithium precipitation mother liquor passes through an inlet of the electric clean ion exchange membrane device 16, and an electric clean ion exchange membrane in the electric clean ion exchange membrane device 16 can separate sodium ions and sulfate ions in brine and discharge the sodium ions and the sulfate ions from different two outlets to be converted into sulfuric acid and sodium hydroxide with high added value, so that the economic benefit of byproducts is increased;
referring to fig. 1 and 2, the device further comprises a carbonization mechanism, wherein the carbonization mechanism comprises a fish gill-shaped carbon dioxide microbubble generator 17 and a third filtering device 18, the fish gill-shaped carbon dioxide microbubble generator 17 is connected to the solid discharge end of the second filtering device 15, and the inlet of the third filtering device 18 is connected to the outlet of the lower end of the fish gill-shaped carbon dioxide microbubble generator 17.
The fish gill-shaped carbon dioxide microbubble generator 17 comprises a carbon dioxide air inlet 171, an industrial grade lithium carbonate inlet 172, a carbon dioxide air outlet 173, a lithium bicarbonate outlet 174 and a fish gill-shaped carbon dioxide microbubble forming opening 175, wherein the industrial grade lithium carbonate inlet 172 is connected with the second filtering device 15, the lithium bicarbonate outlet 174 is connected with the third filtering device 18, and carbon dioxide passing through the fish gill-shaped carbon dioxide microbubble forming opening 175 can be fully contacted with lithium carbonate in solution to form a lithium bicarbonate solution.
Referring to fig. 1 and 2, the lithium secondary precipitation device further comprises a secondary lithium secondary precipitation mechanism, wherein the secondary lithium secondary precipitation mechanism comprises a second lithium secondary precipitation kettle 19 and a fourth filtering device 20, the second lithium secondary precipitation kettle 19 is connected with a liquid outlet of the third filtering device 18, and the fourth filtering device 20 is connected with precipitation of battery-grade lithium carbonate generated by the second lithium secondary precipitation kettle 19.
The second lithium deposition kettle 19 converts the lithium bicarbonate solution into battery grade lithium carbonate by thermal analysis at the temperature of 90-100 ℃ and releases carbon dioxide, and the carbon dioxide can return to the fish gill-shaped carbon dioxide microbubble generator 17 for recycling of the carbon dioxide.
Of the above temperatures, 95℃is preferred.
The embodiment is in the working process:
according to the technical scheme, brine and sodium hydroxide enter a brine inlet according to a certain proportion, then a mixed hydroxyl precipitant enters impurity ion removal equipment 11, the brine is one or a mixture of more of brine leached from lithium ores and/or salt lake brine, impurities such as aluminum, iron and manganese are removed in the step, the mixed brine enters a filtering and ion exchange device in a impurity removal process, excessive calcium ions and magnesium ions are further removed, filtrate enters a lithium precipitation kettle to generate lithium carbonate precipitation, and industrial-grade lithium carbonate and lithium precipitation mother liquor can be respectively obtained through filtering of mixed solution;
the lithium-precipitating mother solution enters an inlet of the electric clean ion exchange membrane device 16 through a pump, and under the action of the electric clean ion exchange membrane, sodium ions and sulfate ions in the lithium-precipitating mother solution are separated from positive and negative ions through the electric clean device in the electric clean ion exchange membrane device 16 and are converted into sulfuric acid and sodium hydroxide with high added values;
the filtered industrial lithium carbonate enters a carbonization mechanism and passes through an inlet of a fish gill-shaped carbon dioxide microbubble generator 17, at the moment, the introduced carbon dioxide is extruded into carbon dioxide microbubbles at a fish gill-shaped carbon dioxide microbubble forming opening 175, the lithium carbonate fully contacts with carbon dioxide in the solution and the microbubbles to form lithium bicarbonate, and pure lithium bicarbonate solution can be obtained through impurity filtering;
the lithium bicarbonate is filtered to remove impurities in industrial lithium carbonate, filter residues enter a secondary lithium precipitation kettle, lithium is precipitated in saturated sodium carbonate solution at the temperature of 95 ℃ to obtain battery-grade lithium carbonate after thermal separation, and the final product battery-grade lithium carbonate can be obtained through filtering.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. The battery-grade lithium carbonate production equipment comprises a lithium carbonate production mechanism and is characterized in that a discharge end of the lithium carbonate production mechanism is respectively connected with an electric clean ion exchange membrane device (16) and a carbonization mechanism, and a discharge end of the carbonization mechanism is connected with a secondary lithium precipitation mechanism;
the lithium carbonate production mechanism comprises impurity ion removal equipment (11), a first filter device (12), an ion exchange resin device (13), a first lithium precipitation kettle (14) and a second filter device (15), wherein the discharge end of the impurity ion removal equipment (11) is connected with the feed end of the first filter device (12), the discharge end of the first filter device (12) is connected with the feed end of the ion exchange resin device (13), the discharge end of the ion exchange resin device (13) is connected with the feed end of the first lithium precipitation kettle (14), the discharge end of the first lithium precipitation kettle (14) is connected with the feed end of the second filter device (15), and the discharge end of the second filter device (15) is respectively connected with the electric clean ion exchange membrane device (16) and the carbonization mechanism;
the electric purification ion exchange membrane device (16) comprises a feed inlet (161) of lithium precipitation mother liquor, a discharge outlet (162) of sulfuric acid and a discharge outlet (163) of sodium hydroxide.
2. The battery grade lithium carbonate production equipment according to claim 1, wherein the carbonization mechanism comprises a fish gill-shaped carbon dioxide microbubble generator (17) and a third filtering device (18), the fish gill-shaped carbon dioxide microbubble generator (17) is connected to the solid discharge end of the second filtering device (15), and the fish gill-shaped carbon dioxide microbubble generator (17) comprises a carbon dioxide gas inlet (171), an industrial grade lithium carbonate inlet (172), a carbon dioxide gas outlet (173), a lithium bicarbonate outlet (174) and a fish gill-shaped carbon dioxide microbubble forming port (175).
3. The battery grade lithium carbonate production equipment according to claim 2, wherein the secondary lithium precipitation mechanism comprises a second lithium precipitation kettle (19) and a fourth filter device (20), the second lithium precipitation kettle (19) is connected with a liquid outlet of the third filter device (18), and a discharge end of the second lithium precipitation kettle (19) is connected with a feed end of the fourth filter device (20).
4. A battery grade lithium carbonate production plant according to claim 3, characterized in that the second lithium precipitation tank (19) converts the pure lithium bicarbonate solution into battery grade lithium carbonate by thermal separation and releases carbon dioxide.
5. The battery grade lithium carbonate production equipment according to claim 4, wherein an air pipe is communicated between the second lithium precipitation kettle (19) and the fish gill-shaped carbon dioxide microbubble generator (17), and the air pipe is used for enabling carbon dioxide to enter the fish gill-shaped carbon dioxide microbubble generator (17).
6. The battery grade lithium carbonate production facility of claim 1, further comprising a plurality of centrifugal pumps that transport brine and filtrate along the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223378858.0U CN219463354U (en) | 2022-12-15 | 2022-12-15 | Battery grade lithium carbonate production facility |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223378858.0U CN219463354U (en) | 2022-12-15 | 2022-12-15 | Battery grade lithium carbonate production facility |
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| CN219463354U true CN219463354U (en) | 2023-08-04 |
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| CN202223378858.0U Active CN219463354U (en) | 2022-12-15 | 2022-12-15 | Battery grade lithium carbonate production facility |
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