CN219314590U - Device for efficiently separating lithium element in waste anode material - Google Patents
Device for efficiently separating lithium element in waste anode material Download PDFInfo
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- CN219314590U CN219314590U CN202223182727.5U CN202223182727U CN219314590U CN 219314590 U CN219314590 U CN 219314590U CN 202223182727 U CN202223182727 U CN 202223182727U CN 219314590 U CN219314590 U CN 219314590U
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- reaction kettle
- stirring reaction
- stirring
- filter
- efficiently separating
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
Abstract
The utility model relates to the field of waste battery recovery, in particular to a device for efficiently separating lithium element from waste anode materials, which comprises a blower, a stirring reaction kettle, a feed pump, a filter and an evaporator, wherein the blower is connected with the stirring reaction kettle; the liquid inlet pipe of the stirring reaction kettle is connected with a feed pump, the liquid outlet pipe at the bottom of the stirring reaction kettle is connected with the inlet of the filter, and the evaporator is connected with the filtrate port of the filter; and an air inlet at the bottom of the stirring reaction kettle is connected with an air blower. The method has the advantages of simple recovery process, high-purity lithium element separation efficiency, no pollutant emission, high mass transfer efficiency and realization of high-efficiency closed-loop green recovery of lithium element.
Description
Technical Field
The utility model relates to the field of waste battery recovery, in particular to a device for efficiently separating lithium element from waste anode materials.
Background
Waste lithium ion batteries contain many valuable metals such as lithium (Li), cobalt (Co), nickel (Ni), manganese (Mn), iron (Fe), copper (Cu), and aluminum (Al). Currently, 50% of Co production is used in secondary batteries, most of which are used in lithium ion batteries, and 35% of Li is mainly used in lithium ion batteries. Compared with mineral resources, the waste lithium ion battery has higher metal resource content, and if the metal elements in the waste lithium ion battery can be efficiently recovered, the consumption of the mineral resources can be reduced, on the other hand, the waste lithium ion battery is directly discarded under the condition of no proper treatment, the metal substances contained in the waste lithium ion battery pollute soil and underground water, and electrolyte in the battery is extremely easy to react with water to release toxic substances, thereby influencing the environment and threatening the health of human beings. The waste lithium ion battery is efficiently recycled, so that the pollution to the natural environment and the harm to the human health can be avoided, valuable metal resources can be reused, and the sustainable development is promoted.
The recycling of the waste lithium ion batteries has extremely important significance for environmental protection and national resource safety. The upstream mineral resources of the lithium ion battery in China are relatively deficient, the external dependence is high, the import dependence of lithium, nickel and cobalt is respectively up to 80%, 80% and 97%, valuable metal rare resources such as lithium, nickel and cobalt extracted in the recovery process of the lithium ion battery can be recycled, the nickel-cobalt-manganese ternary material can be regenerated efficiently, and huge economic value and social value are generated while the environment is protected.
Disclosure of Invention
Aiming at the problems, the utility model provides the device for efficiently separating the lithium element in the waste lithium ion battery anode material, which can efficiently separate the lithium element from the lithium ion battery anode material, has high yield, high purity of the obtained lithium carbonate, no other pollutant emission in the whole process and environmental protection.
The aim of the utility model is realized by adopting the following technical scheme:
a device for efficiently separating lithium elements in waste anode materials comprises a blower, a stirring reaction kettle, a feed pump, a filter and an evaporator; the liquid inlet pipe of the stirring reaction kettle is connected with a feed pump, the liquid outlet pipe at the bottom of the stirring reaction kettle is connected with the inlet of the filter, and the evaporator is connected with the filtrate port of the filter; and an air inlet at the bottom of the stirring reaction kettle is connected with an air blower.
Preferably, the upper end socket of the stirring reaction kettle is fixedly connected with a liquid inlet pipe, an air pressure detection port and an exhaust valve, a heat exchange plate is arranged in the barrel of the stirring reaction kettle, and the heat exchange plate is positioned below the standard liquid level; the stirring reaction kettle bottom head is fixedly connected with an air inlet and a liquid outlet pipe, and the liquid outlet pipe is positioned in the middle of the kettle bottom head.
Preferably, the upper end socket of the stirring reaction kettle is provided with a stirrer, the stirrer provides necessary power for reaction, and the stirrer is a standard power stirrer driven by magnetic force or provided with a mechanical seal.
Preferably, a stirring shaft connected with a stirrer in the stirring reaction kettle is a hollow shaft, and the hollow shaft is CO 2 The gas circulation provides a circulation channel to improve the mass transfer efficiency.
Preferably, the stirring shaft of the hollow shaft is connected with a gas self-priming blade, and the self-priming blade is CO 2 The forced circulation of gas provides conditions.
Preferably, the end of the stirring shaft is provided with a gas-liquid pre-dispersion stirring paddle, the stirring paddle is a turbine stirring paddle, the shearing force is large, and the dispersing effect is good.
Preferably, the evaporator is provided in one or more, configured for the purpose of utilizing forced circulation evaporation to suppress boiling in the heat exchange tubes; a circulation of a slurry of lithium carbonate crystals is maintained within the evaporator, which slurry controls supersaturation of lithium carbonate during reaction concentration in the evaporator and promotes the lithium carbonate crystals within the slurry rather than the heat transfer surface.
Preferably, a gate valve and a pipeline are arranged between the liquid inlet pipe and the feed pump.
Preferably, a gate valve and a pipeline are arranged between the liquid outlet pipe and the filter.
Preferably, the stirring reaction kettle can be connected with a plurality of reaction devices in series through equipment such as a feed pump, a pipeline and the like so as to realize thorough reaction of materials.
Preferably, the feed pump is a radially split centrifugal pump.
Preferably, the blower is a Roots blower.
Preferably, the filter is a plate-and-frame filter press.
Preferably, the evaporator is a forced circulation evaporator, and carbon dioxide gas coming out of the evaporator can be recycled.
The beneficial effects of the utility model are as follows:
(1) The utility model adopts waste lithium ion battery anode materials to generate lithium carbonate and metals or metal oxides such as nickel, cobalt, manganese, iron and the like through carbothermal reduction, and lithium carbonate which is difficult to dissolve in water reacts with carbon dioxide in aqueous solution to generate lithium bicarbonate which is easy to dissolve in water, and then the lithium bicarbonate is separated from metals or metal oxides such as nickel, cobalt, manganese, iron and the like which are not dissolved in water. The recovery process is simple, the high-purity lithium element is efficiently separated, no pollutant is discharged, and meanwhile, the mass transfer efficiency is high, so that the efficient closed-loop green recovery of the lithium element is realized.
(2) The lithium residue in the metal oxide obtained after the lithium element is separated is less, and convenience is brought to the subsequent recycling of metals or metal elements such as nickel, cobalt, manganese, iron and the like.
Drawings
The utility model will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the utility model, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.
FIG. 1 is a schematic structural diagram of a device for efficiently separating lithium elements from a positive electrode material of a waste lithium ion battery;
reference numerals: the device comprises a blower 1, a stirring reaction kettle 2, a feed pump 3, a filter 4, an evaporator 5, a liquid inlet pipe 6, a heat exchange plate 7, an air inlet 8, a liquid outlet pipe 9, a stirrer 10, a hollow shaft 11, a self-priming blade 12 and a stirring paddle 13.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The utility model will be further described with reference to the following examples.
Examples
A device for efficiently separating lithium elements in a positive electrode material of a waste lithium ion battery is shown in fig. 1, and comprises a blower 1, a stirring reaction kettle 2, a feed pump 3, a filter 4 and an evaporator 5; the liquid inlet pipe of the stirring reaction kettle 2 is connected with the feed pump 3, the liquid outlet pipe 9 at the kettle bottom of the stirring reaction kettle 2 is connected with the inlet of the filter 4, and the evaporator 5 is connected with the filtrate port of the filter 4; an air inlet 8 at the bottom of the stirring reaction kettle 2 is connected with the blower 1.
The upper end socket of the stirring reaction kettle 2 is fixedly connected with a liquid inlet pipe 6, an air pressure detection port and an exhaust valve, a heat exchange plate 7 is arranged in a barrel of the stirring reaction kettle 2, and the heat exchange plate 7 is positioned below the standard liquid level; the lower end socket of the stirring reaction kettle 2 is fixedly connected with an air inlet 8 and a liquid outlet pipe 9, and the liquid outlet pipe 9 is positioned at the middle position of the bottom end socket of the kettle.
The upper end socket of the stirring reaction kettle 2 is provided with a standard power stirrer 10 driven by magnetic force or provided with a mechanical seal, and the stirrer 10 is used for providing power and providing necessary power for reaction.
The stirring shaft connected with the stirrer 10 in the stirring reaction kettle 2 is a hollow shaft 11, and the hollow shaft 11 is CO 2 The gas circulation provides a circulation channel to improve the mass transfer efficiency. Hollow coreThe stirring shaft of the shaft 11 is connected with a gas self-priming blade 12, and the self-priming blade 12 is CO 2 The forced circulation of gas provides conditions. The tail end of the stirring shaft is provided with a gas-liquid pre-dispersion stirring paddle 13, the stirring paddle 13 is a turbine stirring paddle 13, the shearing force is large, and the dispersing effect is good.
The evaporator 5 is provided in one or more, and is configured to suppress boiling in the heat exchange tube by forced circulation evaporation; a circulation of a slurry of lithium carbonate crystals is maintained within the evaporator 5, which slurry controls supersaturation of lithium carbonate during the reaction of concentrated acid in the evaporator 5 and promotes the lithium carbonate crystals within the slurry rather than the heat transfer surface.
A gate valve and a pipeline are arranged between the liquid inlet pipe 6 and the feed pump 3. A gate valve and a pipeline are arranged between the liquid outlet pipe 9 and the filter 4. The stirring reaction kettle 2 can be connected with a plurality of reaction devices in series through a feeding pump 3, a pipeline and other equipment so as to realize thorough reaction of materials. The feed pump 3 is a radial split centrifugal pump. The blower 1 is a Roots blower 1. The filter 4 is a plate-and-frame filter press. The evaporator 5 is a forced circulation evaporator 5, and carbon dioxide gas from the evaporator 5 can be recycled.
The specific embodiments are as follows:
firstly, performing carbothermic reduction treatment on a waste lithium ion battery anode material, mixing a mixture obtained by carbothermic treatment with water, mechanically stirring to obtain a suspension, introducing the obtained suspension into a stirring reaction kettle 2 from a liquid inlet pipe 6 through a feed pump 3 to reach a certain standard liquid level, and setting a proper temperature with a heat exchange plate 7 under the combined continuous action of a power stirrer 10, a hollow shaft 11 and a gas-liquid pre-dispersing stirring paddle 13 2 After the gas fully reacts for a certain time, the gas is discharged from a liquid outlet pipe 9 at the bottom of the kettle; CO 2 The gas is introduced from the air inlet at the bottom of the stirring reaction kettle 2 through the blower 1, continuously moves upwards, fully contacts and reacts with the suspension through the gas-liquid pre-dispersion stirring paddle 13, and is CO on the liquid level 2 The gas is controlled to circulate through the hollow shaft 11 under the action of the gas self-priming blade 12; filtering and washing the suspension flowing out of the bottom of the stirring reaction kettle 2 by a filter 4, separating to obtain filtrate and a filter cake, wherein the filter cake is metal or metal oxide mixtureThe obtained filtrate is evaporated to dryness by an evaporator 5 to obtain high-purity lithium carbonate.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.
Claims (8)
1. The device for efficiently separating the lithium element from the waste anode material is characterized by comprising a blower, a stirring reaction kettle, a feed pump, a filter and an evaporator; the liquid inlet pipe of the stirring reaction kettle is connected with a feed pump, the liquid outlet pipe at the bottom of the stirring reaction kettle is connected with the inlet of the filter, and the evaporator is connected with the filtrate port of the filter; and an air inlet at the bottom of the stirring reaction kettle is connected with an air blower.
2. The device for efficiently separating lithium elements from waste anode materials according to claim 1, wherein the upper end socket of the stirring reaction kettle is fixedly connected with a liquid inlet pipe, an air pressure detection port and an exhaust valve, a heat exchange plate is arranged in a barrel of the stirring reaction kettle, and the heat exchange plate is positioned below a standard liquid level; the stirring reaction kettle bottom head is fixedly connected with an air inlet and a liquid outlet pipe, and the liquid outlet pipe is positioned in the middle of the kettle bottom head.
3. The device for efficiently separating lithium elements from waste anode materials according to claim 1, wherein the upper end socket of the stirring reaction kettle is provided with a stirrer, the stirrer provides necessary power for reaction, and the stirrer is a standard power stirrer driven by magnetic force or provided with a mechanical seal.
4. The device for efficiently separating lithium element from waste anode material according to claim 3, wherein the stirring reaction kettle is internally provided with stirring means for stirringThe stirring shaft connected with the mixer is a hollow shaft which is CO 2 The gas circulation provides a circulation channel to improve the mass transfer efficiency.
5. The device for efficiently separating lithium elements from waste anode materials according to claim 4, wherein the stirring shaft of the hollow shaft is connected with a gas self-priming blade, and the self-priming blade is CO 2 The forced circulation of gas provides conditions.
6. The device for efficiently separating lithium elements from waste anode materials according to claim 4, wherein a gas-liquid pre-dispersion stirring paddle is arranged at the tail end of the stirring shaft, and the stirring paddle is a turbine stirring paddle.
7. The device for efficiently separating lithium elements from waste positive electrode materials according to claim 1, wherein one or more evaporators are provided.
8. The device for efficiently separating lithium elements from waste anode materials according to claim 1, wherein a gate valve and a pipeline are arranged between the liquid inlet pipe and the feed pump; a gate valve and a pipeline are arranged between the liquid outlet pipe and the filter; the stirring reaction kettle can be connected with a plurality of reaction devices in series through a feed pump and pipeline equipment so as to realize thorough reaction of materials; the feeding pump is a radial split centrifugal pump; the blower is a Roots blower; the filter is a plate-and-frame filter press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223182727.5U CN219314590U (en) | 2022-11-28 | 2022-11-28 | Device for efficiently separating lithium element in waste anode material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223182727.5U CN219314590U (en) | 2022-11-28 | 2022-11-28 | Device for efficiently separating lithium element in waste anode material |
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| CN219314590U true CN219314590U (en) | 2023-07-07 |
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| CN202223182727.5U Active CN219314590U (en) | 2022-11-28 | 2022-11-28 | Device for efficiently separating lithium element in waste anode material |
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| CN (1) | CN219314590U (en) |
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- 2022-11-28 CN CN202223182727.5U patent/CN219314590U/en active Active
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