CN115483466B - Method for recycling and pretreatment of waste lithium-ion batteries - Google Patents
Method for recycling and pretreatment of waste lithium-ion batteriesInfo
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- CN115483466B CN115483466B CN202211038996.6A CN202211038996A CN115483466B CN 115483466 B CN115483466 B CN 115483466B CN 202211038996 A CN202211038996 A CN 202211038996A CN 115483466 B CN115483466 B CN 115483466B
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- shaking table
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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
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- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for recycling and preprocessing waste lithium ion batteries, which comprises the steps of discharging the waste lithium ion batteries, removing electrolyte, drying, crushing the dried batteries, carrying out shaking table separation on crushed materials to respectively obtain a first mixture containing steel slag, copper sheets and graphite and a second mixture containing aluminum foil and black powder, roasting and screening the second mixture under inert atmosphere, separating the aluminum foil and the black powder, carrying out magnetic separation on the first mixture to separate the steel slag and a third mixture containing the copper sheets and the graphite, roasting and screening the third mixture under inert atmosphere, and separating the copper sheets and the graphite. The whole recovery of the waste lithium ion battery is realized through the procedures of crushing, screening, shaking table, magnetic separation, roasting, secondary screening and the like, the whole process can be completed mechanically without manual work, the whole separation process is to perform physical separation by utilizing the inherent property of materials, no chemical reagent is added, and the method is a green and efficient separation method.
Description
Technical Field
The invention belongs to the technical field of lithium battery recovery, and particularly relates to a method for recovering and preprocessing waste lithium ion batteries.
Background
With the rapid development of new energy industry, the lithium iron phosphate battery is applied to electric vehicles and hybrid electric vehicles on a large scale with low cost and high safety, generally, the service life of the lithium iron phosphate battery is 5-8 years, in recent years, the lithium iron phosphate will be retired, and a large amount of waste lithium iron phosphate batteries can not be properly treated, so that not only serious pollution of the environment is caused, but also loss of scarce lithium resources is caused. Therefore, the recovery treatment of the waste lithium iron phosphate battery is an important research point in the future.
The recovery of the waste lithium iron phosphate battery mainly comprises two parts of pretreatment and metal recovery, wherein the metal recovery part is more studied at present, and a plurality of methods can realize the recovery of the positive electrode active material, and the recovery pretreatment is less studied. The traditional pretreatment method is that after the battery pack is discharged and disassembled, the anode and the cathode of the battery are manually separated and taken out, and then the anode active material and the cathode active material are separated from the current collector, so that the process is difficult to avoid manual participation, has low efficiency and poor safety, and is difficult to realize industrialized popularization. Therefore, the method for conveniently and efficiently treating the waste lithium ion batteries has great scientific significance and practical value.
Chinese patent CN112961984a discloses a process for selectively recycling fluid from waste lithium ion batteries, which comprises discharging waste lithium ion batteries, drying, burning, crushing, sieving, ball milling to obtain ball-milled materials, washing the ball-milled materials with water and magnetically separating to obtain a low-magnetic current collector copper-aluminum mixture, pulping the current collector copper-aluminum mixture, and shaking to obtain current collector copper and current collector aluminum respectively. The process has no new impurity ion introduced during the whole separation process, greatly simplifies the subsequent impurity removal process, improves the purity of the copper-aluminum current collector and improves the sales value of the current collector. However, the process mainly aims to obtain the copper-aluminum current collector, does not pay attention to the recovery of the positive electrode black powder, firstly burns at high temperature and then screens with a large-aperture screen, the copper current collector becomes brittle in the burning process, and then is crushed, a large amount of impurities such as copper, aluminum, graphite and the like enter the positive electrode black powder, so that the content of the impurities in the positive electrode black powder is high, the pressure for recovering valuable metals later is increased, and the recovery rate of the copper-aluminum current collector is also reduced. In addition, the process has certain defects of magnetic separation firstly and then shaking table separation, and the magnetic substances in the materials are few, so that the magnetic substances selected by magnetic separation firstly are few, and a large amount of materials are left to be unselected, thus the unnecessary load and energy consumption of the magnetic separation section can be increased.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the prior art described above. Therefore, the invention provides a method for recycling and preprocessing waste lithium ion batteries, which utilizes the inherent properties of battery composition materials such as density, magnetism, volatilization temperature, toughness and the like, and utilizes a gravity separation and fire process to realize the efficient harmless recycling and preprocessing of the waste lithium ion batteries.
According to one aspect of the invention, a method for recycling and preprocessing waste lithium ion batteries is provided, which comprises the following steps:
S1, discharging, removing electrolyte and drying waste lithium ion batteries, and crushing the dried batteries to obtain crushed materials;
S2, carrying out shaking table separation on the crushed materials to respectively obtain a first mixture containing steel slag, copper sheets and graphite and a second mixture containing aluminum foil and black powder, roasting and screening the second mixture in an inert atmosphere, and separating the aluminum foil and the black powder;
And S3, separating steel slag and a third mixture containing copper sheets and graphite from the first mixture through magnetic separation, and roasting and screening the third mixture under inert atmosphere to separate the copper sheets and the graphite.
In some embodiments of the present invention, in step S1, the waste lithium ion battery is at least one of a lithium iron phosphate battery, a ternary lithium battery, a lithium manganate battery, or a lithium cobaltate battery.
In some embodiments of the invention, in step S1, the temperature of the drying is 80-200 ℃.
In some embodiments of the present invention, in step S1, the crushing process is that coarse crushing is performed first, then fine crushing is performed, screening is performed after the fine crushing is completed, the oversize product returns to the fine crushing process, and the undersize product is the crushed material and enters the next step of shaking table for sorting. Further, the screening is wet screening or dry screening.
In some embodiments of the invention, the opening of the rough break is 1-4cm and the opening of the fine break is 1-4mm. The coarse breaking opening and the fine breaking opening refer to the caliber of a discharging hole of the crusher.
In some embodiments of the invention, in step S1, the crushed material has a particle size of 2mm or less.
In some embodiments of the present invention, in step S2, the shaking table is a hydraulic shaking table, the transverse gradient is 1.5 ° to 5 °, the stroke of the shaking table is 15 to 35mm, and the stroke frequency is 100 to 150 times/min. The greater the slope of the bed surface of the shaker, the cleaner the weight will separate, but the more weight will be mixed into the light material, thus the slope of the bed surface will be strictly controlled.
In some embodiments of the present invention, in step S3, the magnetic field strength of the magnetic separation is 600-1500Gs. Within this preferable range, the higher the magnetic field strength, the better the steel slag separation effect, and the higher the separation rate. Further, the equipment used for magnetic separation is a wet-type weak magnetic separator.
In some embodiments of the invention, in step S2 and/or step S3, the firing temperature is 300-800 ℃. Further, the roasting time is 30-240min. The higher the roasting temperature is, the better the binder removal effect is, the higher the recovery rate of the anode and cathode materials is, but the higher the oxidation degree of the copper sheet and the aluminum foil is, the higher the impurity content of the doped copper and aluminum in the anode and cathode materials is, so that the roasting temperature is controlled in a proper range.
In some embodiments of the invention, in step S2 and/or step S3, the mesh size of the screen used for the sieving is 0.025-0.074mm.
In some embodiments of the invention, in step S2 and/or step S3, the inert atmosphere is at least one of nitrogen, argon or helium.
In some embodiments of the invention, the steam generated in the drying and roasting processes is recycled by passing the steam through a pipeline into a condensing system.
According to a preferred embodiment of the invention, there is at least the following advantageous effect:
1. The invention firstly heats and dries residual electrolyte and moisture, integrally crushes and sieves, controls the particle size of crushed materials, the crushed materials contain steel slag, copper sheets, graphite adhered to the copper sheets, aluminum foils and black powder adhered to the aluminum foils, then a shaking table is used for realizing separation of heavy substances and light substances, then magnetic separation is used for realizing separation of the steel slag and the copper sheets, finally a binder is burned out by roasting, and separation of the copper sheets from the graphite and the aluminum foils and positive black powder is realized by sieving. The black powder is mainly a mixture of the positive electrode powder, carbon powder and a small amount of graphite falling in the crushing and screening process, the positive electrode powder can be dissolved by acid in the subsequent wet leaching process of the battery black powder, and the graphite and the carbon powder can be filtered as insoluble matters, so that the process is not influenced.
2. According to the invention, different materials are separated by using water as a medium and adopting a shaking table separation process, in the separation process, aluminum foil and black powder are relatively light, float on the uppermost layer under the influence of water flow classification, are subjected to larger transverse water flow impact, and the bonding part of the copper sheet is subjected to larger longitudinal impact force, so that graphite and steel slag can be intercepted in two different directions of a shaking table to obtain light and heavy materials, and then the separation of the steel slag and the copper sheet is realized after magnetic separation by using the strong magnetism of the steel slag and the non-magnetism of the copper sheet.
3. The invention mainly aims to obtain the positive electrode black powder with higher purity, and simultaneously realize the efficient recovery of substances such as copper, aluminum current collectors and the like. Compared with the traditional process, the invention skillfully puts the roasting section at the end, and can avoid the problems of exceeding copper content in the black powder and reducing copper recovery rate in copper products and the like caused by embrittlement of the copper current collector mixed into the black powder due to roasting in the shaking table section. Because the amounts of light and heavy materials in the crushed materials are similar, the shaking table is put before magnetic separation, half of the light materials are selected by the shaking table, and half of the heavy materials are left for magnetic separation, so that the amount of materials entering a magnetic separation section is greatly reduced, the load of the magnetic separation section is reduced, and a large amount of energy consumption is saved. In addition, the traditional process generally leaves graphite in the positive electrode black powder, the graphite is insoluble in a wet process section and is left in slag for recovery in the wet process section, most of graphite products can be directly obtained, and only a small amount of graphite is mixed in the positive electrode black powder to participate in subsequent leaching.
4. The invention realizes the integral recovery of the waste lithium ion battery through the procedures of crushing, screening, shaking table, magnetic separation, roasting, secondary screening and the like, and the whole process can be completed mechanically without manual disassembly. The whole separation process is to perform physical separation by utilizing the inherent property of the material, no chemical reagent is added in the whole process, and the method has almost no pollution to the environment and no harm to human bodies, and is a green and efficient separation method.
Drawings
The invention is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The conception and the technical effects produced by the present invention will be clearly and completely described in conjunction with the embodiments below to fully understand the objects, features and effects of the present invention. It is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present invention based on the embodiments of the present invention.
Example 1
Referring to fig. 1, the method for recycling and preprocessing the waste lithium iron phosphate battery specifically comprises the following steps:
Step 1, putting a fully discharged lithium iron phosphate battery with electrolyte removed into an oven, setting the temperature to 150 ℃, drying for 3 hours, discharging water and residual electrolyte, and recycling generated gas into a condensing system through a pipeline, wherein the density of each substance in the lithium iron phosphate battery is 8.9g/cm 3, 7.85g/cm 3 of steel, 2.7g/cm 3 of aluminum and 1.523g/cm 3 of lithium iron phosphate;
step 2, taking out the dried battery, putting the battery into a jaw crusher for coarse crushing, and adjusting the opening of the jaw crusher to 2cm;
step 3, putting the crushed materials into a double-roller crusher for fine crushing, wherein the opening of the double-roller crusher is 2mm;
step 4, screening the finely crushed materials by using a screen with the screen size of 2mm, returning the oversize materials to a double-roller crusher, continuously crushing the oversize materials to below 2mm, and carrying out the next treatment on the undersize materials;
Step 5, setting a horizontal gradient of 2.5 degrees for parameters of a shaking table, wherein the stroke of the shaking table is 20cm, the stroke frequency is 140 times/min, pulping the crushed qualified materials with the concentration of 30%, slowly adding the materials into the shaking table, and sorting the materials by the shaking table to obtain a first mixture containing steel slag, copper sheets and graphite and a second mixture containing aluminum foil and black powder;
Step 6, setting the magnetic field intensity of the magnetic roller to 800Gs, and separating the steel slag and a third mixture containing copper sheets and graphite from the first mixture obtained in the step 5 through the magnetic roller, wherein the recovery rate of the steel slag is 97%;
Step 7, placing the third mixture obtained in the step 6 into a muffle furnace, setting the temperature to 400 ℃, roasting for 60min under the nitrogen atmosphere, screening by using a screen with the screen size of 0.038mm, wherein the oversize material is copper sheets, the undersize material is graphite slag, and the recovery rate of the copper sheets can reach 98%;
And 8, placing the second mixture obtained in the step 5 into a muffle furnace, setting the temperature to 500 ℃, roasting for 40min under the nitrogen atmosphere, screening by using a screen with the screen size of 0.038mm, wherein the material on the screen is aluminum foil, the material under the screen is black powder, the recovery rate of the aluminum foil is 97%, and the recovery rate of the positive electrode powder in the black powder is 95%.
TABLE 1 elemental content of each product in example 1
Example 2
A method for recycling and preprocessing waste lithium iron phosphate batteries comprises the following specific processes:
Step 1, placing a lithium iron phosphate battery which is fully discharged and has electrolyte removed into an oven, setting the temperature to 180 ℃, drying for 2 hours, discharging water and residual electrolyte, and recycling generated gas in a condensing system through a pipeline;
step 2, taking out the dried battery, putting the battery into a jaw crusher for coarse crushing, and adjusting the opening of the jaw crusher to 2cm;
step 3, putting the crushed materials into a double-roller crusher for fine crushing, wherein the opening of the double-roller crusher is 2mm;
step 4, screening the finely crushed materials by using a screen with the screen size of 2mm, returning the oversize materials to a double-roller crusher, continuously crushing the oversize materials to below 2mm, and carrying out the next treatment on the undersize materials;
setting a horizontal gradient of 3.5 degrees for parameters of a shaking table, performing shaking table stroke of 18cm and 140 times per minute, pulping the crushed qualified materials with the concentration of 30%, slowly adding the materials into the shaking table, and sorting the materials by the shaking table to obtain a first mixture containing steel slag, copper sheets and graphite and a second mixture containing aluminum foil and black powder;
Step 6, setting the magnetic field intensity of the magnetic roller to 800Gs, and separating the steel slag and a third mixture containing copper sheets and graphite from the first mixture obtained in the step 5 through the magnetic roller, wherein the recovery rate of the steel slag is 97%;
Step 7, placing the third mixture obtained in the step 6 into a muffle furnace, setting the temperature to 500 ℃, roasting for 40min under nitrogen atmosphere, screening by using a screen with the screen size of 0.038mm, wherein the oversize material is copper sheets, the undersize material is graphite slag, and the recovery rate of the copper sheets is 97.5%;
and 8, placing the second mixture obtained in the step 5 into a muffle furnace, setting the temperature to 600 ℃, roasting for 40min under the nitrogen atmosphere, screening by using a screen with the screen size of 0.038mm, wherein the material on the screen is aluminum foil, the material under the screen is black powder, the recovery rate of the aluminum foil is 98%, and the recovery rate of the positive electrode powder in the black powder is 94.5%.
TABLE 2 elemental content of each product in example 2
Example 3
A method for recycling and preprocessing waste lithium iron phosphate batteries comprises the following specific processes:
Step 1, placing a lithium iron phosphate battery which is fully discharged and has electrolyte removed into an oven, setting the temperature to 180 ℃, drying for 2 hours, discharging water and residual electrolyte, and recycling generated gas in a condensing system through a pipeline;
step 2, taking out the dried battery, putting the battery into a jaw crusher for coarse crushing, and adjusting the opening of the jaw crusher to 2cm;
step 3, putting the crushed materials into a double-roller crusher for fine crushing, wherein the opening of the double-roller crusher is 2mm;
step 4, screening the finely crushed materials by using a screen with the screen size of 2mm, returning the oversize materials to a double-roller crusher, continuously crushing the oversize materials to below 2mm, and carrying out the next treatment on the undersize materials;
Step 5, setting a horizontal gradient of 3.5 degrees for parameters of a shaking table, wherein the stroke of the shaking table is 23cm, the stroke frequency is 140 times/min, pulping the crushed qualified materials with the concentration of 30%, slowly adding the materials into the shaking table, and sorting the materials by the shaking table to obtain a first mixture containing steel slag, copper sheets and graphite and a second mixture containing aluminum foil and black powder;
Step 6, setting the magnetic field intensity of the magnetic roller to 1500Gs, and separating the steel slag and a third mixture containing copper sheets and graphite from the first mixture obtained in the step 5 through the magnetic roller, wherein the recovery rate of the steel slag is 98%;
Step 7, placing the third mixture obtained in the step 6 into a muffle furnace, setting the temperature to 500 ℃, roasting for 40min under nitrogen atmosphere, screening by using a screen with the screen size of 0.038mm, wherein the oversize material is copper sheets, the undersize material is graphite slag, and the recovery rate of the copper sheets is 97%;
and 8, placing the second mixture obtained in the step 5 into a muffle furnace, setting the temperature to 600 ℃, roasting for 120min under the nitrogen atmosphere, screening by using a screen with the screen size of 0.038mm, wherein the material on the screen is aluminum foil, the material under the screen is black powder, the recovery rate of the aluminum foil is 96.5%, and the recovery rate of the positive electrode powder in the black powder is 96%.
TABLE 3 elemental content of each product in example 3
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention. Furthermore, embodiments of the invention and features of the embodiments may be combined with each other without conflict.
Claims (8)
1. The method for recycling and preprocessing the waste lithium ion battery is characterized by comprising the following steps of:
S1, discharging, removing electrolyte and drying waste lithium ion batteries, and crushing the dried batteries to obtain crushed materials;
S2, carrying out shaking table separation on the crushed materials to respectively obtain a first mixture containing steel slag, copper sheets and graphite and a second mixture containing aluminum foil and black powder, roasting the second mixture under inert atmosphere to remove binder, screening and separating the aluminum foil and the black powder;
S3, separating steel slag and a third mixture containing copper sheets and graphite from the first mixture through magnetic separation, roasting the third mixture in an inert atmosphere to remove a binder, and screening to separate the copper sheets and the graphite;
In the step S1, the temperature of the drying is 80-200 ℃, and the granularity of the crushed materials is less than or equal to 2mm.
2. The method according to claim 1, wherein in the step S1, the crushing process is that coarse crushing is carried out, fine crushing is carried out, screening is carried out after fine crushing is finished, oversize products return to the fine crushing process, and undersize products are crushed materials and enter a next step of shaking table for sorting.
3. The method of claim 2, wherein the opening of the rough break is 1-4cm and the opening of the fine break is 1-4mm.
4. The method according to claim 1, wherein in the step S2, the shaking table is a hydraulic shaking table, the transverse gradient is 1.5 ° -5 °, the stroke of the shaking table is 15-35mm, and the stroke frequency is 100-150 times/min.
5. The method according to claim 1, wherein in step S3, the magnetic field strength of the magnetic separation is 600-1500Gs.
6. The method according to claim 1, wherein in step S2 and/or step S3, the firing temperature is 300-800 ℃.
7. The method according to claim 1, wherein in step S2 and/or step S3, the mesh size of the screen used for sieving is 0.025-0.074mm.
8. The method according to claim 1, wherein the steam generated in the drying and roasting process is recycled into the condensing system through a pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211038996.6A CN115483466B (en) | 2022-08-29 | 2022-08-29 | Method for recycling and pretreatment of waste lithium-ion batteries |
| PCT/CN2023/079350 WO2024045532A1 (en) | 2022-08-29 | 2023-03-02 | Method for recovering and pretreating spent lithium-ion battery |
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| CN202211038996.6A CN115483466B (en) | 2022-08-29 | 2022-08-29 | Method for recycling and pretreatment of waste lithium-ion batteries |
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| CN115483466B true CN115483466B (en) | 2025-09-30 |
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| CN115483466B (en) * | 2022-08-29 | 2025-09-30 | 广东邦普循环科技有限公司 | Method for recycling and pretreatment of waste lithium-ion batteries |
| CN116273445B (en) * | 2023-02-20 | 2024-02-02 | 湖南五创循环科技股份有限公司 | Method for improving separation efficiency of mixed materials of waste lithium manganate batteries |
| CN118017065B (en) * | 2024-04-10 | 2024-06-04 | 烟台大为环保科技有限公司 | Method and equipment for recycling black powder of waste lithium batteries |
| CN119542596B (en) * | 2024-11-25 | 2025-10-28 | 常州厚丰新能源有限公司 | A method and device for regenerating and recycling copper-containing battery negative electrode materials |
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| CN106099238A (en) * | 2016-08-24 | 2016-11-09 | 赣州市豪鹏科技有限公司 | A kind of recovery method of waste secondary battery ferrum |
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| JP6859598B2 (en) * | 2016-03-18 | 2021-04-14 | 三菱マテリアル株式会社 | How to recover valuables from used lithium-ion batteries |
| CN106299530A (en) * | 2016-09-27 | 2017-01-04 | 中国电子科技集团公司第十八研究所 | A method for dismantling, classifying and recycling power lithium-ion batteries for new energy vehicles |
| CN107086334A (en) * | 2017-03-14 | 2017-08-22 | 北京赛德美资源再利用研究院有限公司 | A kind of waste and old dynamic lithium battery automation splits the clean recovery method of full constituent |
| CN110935557B (en) * | 2019-11-28 | 2022-01-18 | 荆门市格林美新材料有限公司 | Coarse and fine grading-gravity and magnetic combined chromium removal process for low-grade laterite-nickel ore |
| CN111468284A (en) * | 2020-04-16 | 2020-07-31 | 中国恩菲工程技术有限公司 | Method for recovering copper, aluminum and graphite from waste ternary lithium ion battery |
| CN112310503A (en) * | 2020-11-20 | 2021-02-02 | 安化县泰森循环科技有限公司 | A kind of waste lithium battery recycling and processing method |
| CN112599766B (en) * | 2020-12-14 | 2023-04-25 | 台州市宸明新能源科技有限公司 | Regeneration process of waste lithium iron phosphate battery anode material |
| CN112756104B (en) * | 2020-12-28 | 2023-01-13 | 湖南邦普循环科技有限公司 | Wet sorting process for waste lithium batteries and application thereof |
| CN114147043B (en) * | 2021-09-30 | 2024-05-10 | 湖南江冶新能源科技股份有限公司 | Sorting method for recycling anode and cathode powder of waste lithium batteries |
| CN114361636A (en) * | 2022-01-11 | 2022-04-15 | 赣州赛可韦尔科技有限公司 | A method for cleaning and recycling waste lithium-ion batteries |
| CN115483466B (en) * | 2022-08-29 | 2025-09-30 | 广东邦普循环科技有限公司 | Method for recycling and pretreatment of waste lithium-ion batteries |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106099238A (en) * | 2016-08-24 | 2016-11-09 | 赣州市豪鹏科技有限公司 | A kind of recovery method of waste secondary battery ferrum |
| CN107394301A (en) * | 2017-07-19 | 2017-11-24 | 深圳市沃特玛电池有限公司 | A kind of waste and old electrokinetic cell physiochemical mutagens technique |
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| CN115483466A (en) | 2022-12-16 |
| WO2024045532A1 (en) | 2024-03-07 |
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