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WO2025005665A1 - Procédé de retraitement d'une batterie secondaire au lithium usagée - Google Patents

Procédé de retraitement d'une batterie secondaire au lithium usagée Download PDF

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Publication number
WO2025005665A1
WO2025005665A1 PCT/KR2024/008917 KR2024008917W WO2025005665A1 WO 2025005665 A1 WO2025005665 A1 WO 2025005665A1 KR 2024008917 W KR2024008917 W KR 2024008917W WO 2025005665 A1 WO2025005665 A1 WO 2025005665A1
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WIPO (PCT)
Prior art keywords
electrolyte
crushed material
lithium
solvent
lithium secondary
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Pending
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PCT/KR2024/008917
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English (en)
Korean (ko)
Inventor
김용환
김연호
김민주
김효재
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Naul Inc
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Naul Inc
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Publication date
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Publication of WO2025005665A1 publication Critical patent/WO2025005665A1/fr
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Anticipated expiration legal-status Critical

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/30—Destroying solid waste or transforming solid waste into something useful or harmless involving mechanical treatment
    • B09B3/35—Shredding, crushing or cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/80—Destroying solid waste or transforming solid waste into something useful or harmless involving an extraction step
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B2101/00—Type of solid waste
    • B09B2101/15—Electronic waste
    • B09B2101/16—Batteries
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • 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
    • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • 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

Definitions

  • the present invention relates to a wet chemical pretreatment method for a spent lithium secondary battery reprocessing process, which not only recovers a high yield of lithium by extracting an electrolyte containing lithium from the shredded waste of a spent secondary battery by a chemical method while preventing fire and explosion that may occur when an undischarged cell is shredded, but also protects the atmospheric environment of a workplace by removing odor caused by the removal of the electrolyte, and recovers high-purity, high-yield black mass from the shredded waste, thereby satisfying environmental friendliness, carbon neutrality, and ESG.
  • modules and packs made by stacking tens or hundreds of cells have several to tens of undischarged cells due to errors in the BMS (Battery Management System) or cell abnormalities even when forced electrical discharge is performed. These cells can cause fire and explosion during reprocessing or crushing, making it difficult to create work efficiency and automated lines.
  • BMS Battery Management System
  • a high-temperature firing method and a wet method using water washing are used.
  • Korean Patent Publication No. 10-2020-0052761 discloses an underwater crushing process as a recycling device and method for waste lithium secondary batteries, which enables the recycling process to proceed quickly without requiring land and equipment for a discharge space by disassembling and recycling waste lithium secondary batteries directly into a recycling process without going through a discharge process.
  • a pretreatment method for a waste lithium secondary battery reprocessing process which recovers black mass through secondary crushing and tertiary crushing, transport of crushing conveyor belts using a shredder in water, drying in a kiln or rotary kiln, and classification.
  • Korean Patent Publication No. 10-2012-0126946 relates to a pretreatment method for a waste lithium secondary battery reprocessing process using water washing and sulfuric acid, and discloses a black mass extraction process through processes such as discharging, crushing, magnetic separation, classification, water washing, gravity separation, sulfuric acid solution peeling, and classification.
  • a pretreatment method for a waste lithium secondary battery reprocessing process comprises the steps of crushing waste lithium secondary battery waste, such as waste lithium secondary battery electrolyte, separator, and positive and negative electrode composite fragments, into a size of 5 to 15 mm, washing the fragments with water to remove the electrolyte, separating the fragments from which the electrolyte has been removed to remove the separator, and treating the fragments from which the electrolyte and separator have been removed with a sulfuric acid solution having a concentration of 1 to 4 M to recover black mass.
  • waste lithium secondary battery waste such as waste lithium secondary battery electrolyte, separator, and positive and negative electrode composite fragments
  • Korean Patent Publication No. 10-2020-0077108 relates to a method for a waste lithium secondary battery reprocessing process using multi-stage sintering, and discloses a black mass extraction process through discharging, crushing, pulverizing, sintering, classification, and magnetic separation.
  • the present invention discloses a process for precipitating and discharging in brine, a process for primary crushing using a shredder cutter, a process for crushing using a cut crusher/hammer crusher/roll crusher, a process for crushing using one selected from the group consisting of a roll mill, a ball mill, a jet mill, a planetary mill, and an attrition mill, a process for multi-stage calcination ranging from 100 degrees to 1,000 degrees, a process for crushing the calcined crushed material in a lab and classifying it using a sieve, and a process for extracting black mass through a process of a magnetic separation step.
  • the electrolyte in order to prevent explosion and fire due to crushing and pulverization of undischarged batteries for waste secondary battery processing, the electrolyte is hydrophilic and mixes with water, which not only causes water pollution, but also causes problems with the efficiency of separation rate and purity because the binder (PVDF, Polyvinylidene fluoride) increases the binding force due to the high temperature during drying.
  • PVDF Polyvinylidene fluoride
  • the quality of the air environment cannot be guaranteed due to the odor of the electrolyte, and the process is complicated and exposes the user to the risk of water pollution caused by the brine for discharge and sulfate.
  • the present invention aims to solve the above-mentioned problems and other problems. Another object is to provide a method for reprocessing waste lithium secondary batteries using a chemical method.
  • waste lithium secondary battery finished products are crushed and pulverized to make shreds and extract black mass.
  • undischarged cells are exposed to fire and explosion, and since they are soaked in electrolyte, the shreds turn into cakes when crushed and pulverized, making efficient separation impossible, and there were limitations in extracting high-purity black mass. Therefore, a process of extraction through drying, washing, and calcination is used to remove electrolyte and polymer raw materials.
  • acetone gas which is a unique property of lithium secondary battery electrolyte
  • KILN incineration method
  • a high-temperature treatment process of 400 to 1,000 degrees is performed in a rotary kiln to remove the binder used to attach the electrolyte, separator, and positive active material of the secondary battery positive plate and the carbon of the negative plate.
  • the aluminum plates of the high-temperature treated shredded material in the rotary kiln go through a crushing and pulverizing process using a mill in an oxidized state. At this time, the oxidized aluminum plates are also pulverized by the mill process.
  • the method for reprocessing waste lithium secondary batteries sequentially separates the waste secondary batteries by removing the electrolyte through a chemical method that does not change the properties of each raw material, and then crushing and separating them, thereby simplifying the complex process and improving productivity in a way that satisfies the environment, carbon neutrality, and ESG, thereby providing a preprocessing method for the waste lithium secondary battery reprocessing process consisting of an automated line.
  • a method for reprocessing a spent lithium secondary battery including the steps of: first crushing a spent secondary battery containing an electrolyte into 8 to 15 mm pieces; extracting an electrolyte containing lithium from the first crushed particles using a solvent in an extraction reactor while removing a separator using buoyancy; drying the first crushed particles in a dryer; removing iron components from the crushed particles through a magnetic separation process; second crushing the particles from which the iron components have been removed into 5 to 8 mm pieces; separating a copper plate from the second crushed particles using a separator; third crushing the particles from which the copper plates have been separated into 1 to 5 mm pieces to separate an aluminum plate and a cathode active material from the particles; extracting a black mass containing the aluminum plate and the cathode active material; and separating a black mass contained in a solvent used in the lithium-containing electrolyte extraction step using a separator.
  • the solvent introduced into the extraction reactor in the step of extracting the electrolyte is methanol, ethanol, tetrachloromethane, trichloromethane, dichloromethane, pentachloroethane, 1,1,1,2 tetrachloroethane, 1,1,2,2 tetrachloroethane, 1,1,2 trichloroethane, 1,1,1 trichloroethane, tetrachloroethene, trichloroethene, cis 1,2 dichloroethene, trans 1,2 dichloroethene. It may be at least one selected from the group consisting of 1,1 dichloroethene, 1,2 dichloroethane, 1,1 dichloroethane, and NMP (N-Methyl-2-pyrrolidinone).
  • the solvent used in the step of extracting the electrolyte can be mixed at a ratio of 0.5 to 10 times the weight of the crushed material.
  • the temperature of the extraction reactor in the step of extracting the electrolyte may be 10 to 150°C.
  • the method may further include a step of fractionating the solvent containing the electrolyte into a solvent and an electrolyte containing lithium (Li) through a fractionating separator; and a step of re-supplying the fractionated solvent to the electrolyte extraction step.
  • the step of drying the primary crushed material can be performed at a temperature of 20°C to 200°C.
  • lithium secondary battery waste is extracted from the scrap in a chemical wet process in a reactor containing a solvent through an automated process, thereby increasing economic efficiency through lithium reprocessing and removing the odor of the electrolyte, thereby protecting the working environment and the atmospheric environment from the odor of the electrolyte.
  • the scrap from which the electrolyte and lithium are extracted can be efficiently crushed and pulverized, thereby having the advantage of extracting high yield and high purity black mass.
  • the electrolyte and solvent containing lithium extracted in the electrolyte extraction process can be separated, recovered, and reused to increase cost efficiency, and the electrolyte containing lithium has an advantage in that it can create additional profits through reprocessing. That is, after crushing waste lithium secondary batteries, the electrolyte is extracted in a reactor, and after the electrolyte extraction, the wet lithium secondary battery crushed matter is dried in a process to remove the odor of the electrolyte, and at the same time, crushing and separation are performed quickly and efficiently, and the solvent used in the electrolyte extraction has an advantage in that it can extract black mass that is reused through reprocessing.
  • Figure 1 is a flow chart of a method for reprocessing waste lithium secondary batteries related to the present invention.
  • Figure 2 is a photograph of waste lithium secondary battery fragments related to the present invention.
  • Figure 3 is a photograph of a separation membrane separated from the primary crushed material related to the present invention.
  • FIG. 4 is a photograph of a third crushed battery fragment related to the present invention.
  • Figure 5 is a photograph of a separated and extracted lithium electrolyte related to the present invention.
  • Figure 6 is a photograph of a separated black mass related to the present invention.
  • the present invention relates to a wet chemical process for extracting high-yield, high-purity black mass by first crushing and pulverizing spent lithium secondary batteries containing electrolyte, and processing the crushed materials from which the electrolyte is extracted, and recovering the electrolyte including lithium with a high yield.
  • spent lithium secondary batteries containing electrolyte are first crushed, the electrolyte is wetted in the crushed materials, and the crushed materials turn into a cake by the electrolyte, so it is difficult to extract high-purity black mass and high-yield black mass.
  • the electrolyte mainly uses an aromatic organic solvent having a ketone structure, such as diethyl carbonate (DEC) and dimethyl carbonate (DMC), there has been a difficulty in securing an air environment in the workplace due to the odor of the electrolyte during crushing and pulverization.
  • DEC diethyl carbonate
  • DMC dimethyl carbonate
  • a pretreatment process for recycling a lithium secondary battery whose life has ended (EoL) is disclosed, which effectively crushes and pulverizes a spent lithium secondary battery containing an electrolyte by using a chemical method, to extract high-quality black mass with high purity and high separation rate and an electrolyte containing lithium.
  • it is a process for recovering black mass and electrolyte containing lithium through a low-temperature chemical wet method while preventing fire and explosion caused by undischarged cells during the first crushing, and provides an automated process for extracting lithium and black mass through a chemical process that satisfies environmental friendliness, carbon neutrality, and ESG.
  • a method for efficiently separating the main components of a spent lithium secondary battery, such as a pouch packaging or can, an electrolyte, a separator, aluminum as a positive electrode plate and a positive electrode active material, and copper as a negative electrode plate and a negative electrode active material, during the first crushing for reprocessing of a spent lithium secondary battery according to the present invention, thereby preventing fire and explosion due to undischarged cells, and efficiently separating the main components of a spent lithium secondary battery, such as a pouch packaging or can, an electrolyte, a separator, and a positive electrode plate, and a negative electrode active material, through an electrolyte extraction step.
  • the spent lithium secondary battery regeneration process according to an embodiment of the present invention can ensure safety against fire and explosion, etc., it is possible to perform a continuous process, and thus has the advantage of sealing the machines for all processes to prevent dust and air pollution, separating and extracting only black mass, and improving purity and separation amount.
  • FIG. 1 is a flow chart of a method for reprocessing waste lithium secondary batteries related to the present invention.
  • a method for reprocessing waste lithium secondary batteries according to one embodiment of the present invention will be described with reference to FIG. 1.
  • the above-mentioned waste lithium secondary battery reprocessing method comprises the steps of: first crushing waste secondary batteries containing electrolyte into 8 to 15 mm (S110); extracting lithium-containing electrolyte from the first crushed waste using a solvent in an extraction reactor while removing a separator using buoyancy (S120); drying the first crushed waste in a dryer (S130); removing iron components from the crushed waste through a magnetic separation process (S140); second crushing the crushed waste from which the iron components have been removed into 5 to 8 mm (S150); separating copper plates from the second crushed waste using a separator (S160); third crushing the crushed waste from which the copper plates have been separated into 1 to 5 mm (S170) to separate cathode active material from the aluminum plates; and removing black mass containing the aluminum plates and cathode active material. It is performed including a step of extracting (S180) and a step of separating (S190) the black mass included in the solvent used in the step of extracting the electrolyte containing lithium using
  • the step of crushing the first crushed material is crushed using a shredder, and the first to third crushings are crushed into gradually smaller sizes.
  • the step of drying the first crushed material is performed at a temperature of 20°C to 160°C. At this time, it can be performed using a dryer such as a kiln furnace, a vacuum dryer, a thermal dryer, or a general dryer.
  • the binder PVDF
  • the binder can further increase the bonding strength between the aluminum plate, positive electrode active material, and black mass, so the drying temperature is limited to 20 to 160°C.
  • FIG. 2 is a photograph of waste lithium secondary battery shreds related to the present invention
  • FIG. 3 is a photograph of a separator separated from the first shreds related to the present invention
  • FIG. 4 is a photograph of the third shredded battery shreds related to the present invention.
  • the solvent introduced into the extraction reactor in the step of extracting the electrolyte is methanol, ethanol, tetrachloromethane, trichloromethane, dichloromethane, pentachloroethane, 1,1,1,2 tetrachloroethane, 1,1,2,2 tetrachloroethane, 1,1,2 trichloroethane, 1,1,1 trichloroethane, tetrachloroethene, trichloroethene, cis 1,2 dichloroethene, trans 1,2 dichloroethene, It may be at least one selected from the group consisting of 1,1 dichloroethene, 1,2 dichloroethane, 1,1 dichloroethane, and NMP (N-Methyl-2-pyrrolidinone). Depending on the solvent used, ignition can be prevented in advance by additionally purging with nitrogen during electrolyte extraction.
  • the solvent used in the step of extracting the electrolyte may be mixed at a ratio of 0.5 to 10 times the weight of the crushed material. If the amount of the solvent is less than 0.5 times the weight of the crushed material, the solvent may be completely absorbed by the separator of the crushed material, so that it simply becomes a cake in a wet state, making it difficult to extract the electrolyte. If the amount of the solvent is more than 10 times the weight, there is a problem of excessive cost.
  • the temperature of the extraction reactor for extracting the electrolyte from the waste lithium secondary battery scrap is 10 to 150°C for 2 to 30 minutes
  • the process of transporting the electrolyte while stirring with a stirring machine such as a screw or a screw, or transporting the electrolyte while spraying the electrolyte may be performed by using a machine (line, batch, etc.) that combines an impact tool using vibration or ultrasonic waves.
  • the binder (PVDF) may melt, and considering the boiling point of the solvent, it is preferable to set it higher than 10°C.
  • the solvent containing the electrolyte is fractionated into a solvent and an electrolyte containing lithium (Li) through a fractionating separator (S123), and the fractionated solvent is re-supplied to the electrolyte extraction step (S125) so that the solvent can be reused. More specifically, in a solvent in which lithium and the electrolyte are mixed, the solvent or a mixed solvent of two or more and the electrolyte containing lithium are separated from the electrolyte containing lithium using a fractionating separator or a layer separator at a temperature range of 20 to 150°C.
  • the electrolyte extraction temperature is limited to 20 to 150°C.
  • the spent lithium secondary battery waste containing the electrolyte is crushed and pulverized. This is the step of crushing the spent lithium secondary battery waste containing the electrolyte.
  • the spent lithium secondary batteries are crushed into 8 to 15 mm sizes using a shredder.
  • the 8 to 15 mm crushed materials are fed into an extraction reactor with 2.5 times the weight ratio of the crushed materials through a screw for 10 minutes, and a mixing process is added to increase the efficiency of the reaction to extract the electrolyte.
  • the separator is automatically separated and the separated separator is removed.
  • the above extracted crushed material was sent to a dedicated drying machine and dried. At this time, the drying hot air was 30°C to 45°C. If the drying temperature is 20°C or lower, the drying speed of the solvent is low, making it difficult to achieve the target processing amount per hour. Even if the drying temperature is 45°C or higher, the remaining binder, PVDF, did not affect the separation rate and purity of aluminum and the cathode material due to the increase in binder caused by heat curing.
  • Table 1 shows the results of measuring the production yield and separation rate according to the drying temperature of the crushed material. Referring to Table 1, it can be seen that the separation rate and purity at 30 to 45 degrees are both 99%.
  • the residual separator was removed from the dried shreds using a separator to obtain waste secondary battery shreds.
  • the obtained shreds were subjected to a belt magnetic separator process to obtain negative and positive electrode shreds and pulverized products from which iron components such as battery electrodes and cans were removed.
  • the crushed material from which the electrolyte, separator, can, and electrodes were removed was crushed into 5 to 8 mm pieces through a secondary shredder, and then the copper plate was removed through a separator.
  • the aluminum and positive active material were crushed into 1 to 5 mm pieces through a pin mill process, and the aluminum and positive active material were easily separated.
  • the separated aluminum plate, positive active material, and negative active material were passed through an 80 to 120 mesh vibrating sieve to separate the aluminum plate, and the black mass with a purity of 99% or more could be separated and extracted.
  • a photograph of the separated and extracted lithium electrolyte is shown in Fig. 5
  • a photograph of the separated and extracted black mass is shown in Fig. 6.
  • the electrolyte and solvent containing lithium obtained through the electrolyte extraction process contain some black mass, which can be separated using a centrifuge.
  • the electrolyte and solvent containing lithium were separated using the separator. Afterwards, the separated black mass cake was sent to a dryer to perform a drying process.
  • the mixed solvent containing the electrolyte was sent to a fractionator and fractionated at a temperature of 35 to 45°C to separate the solvent and the electrolyte containing lithium (Li).
  • the Li content of the extracted electrolyte was 90% of the ratio input during battery manufacturing and varied depending on the amount of reaction solvent input.
  • the recovery rate of the solvent recovered using the fractionator was 98%, and the recovered separated solvent was sent back to the electrolyte extraction reactor and recycled.
  • One embodiment of the present invention can be used in the technical field of reprocessing waste lithium secondary batteries to recover lithium at a high yield by extracting an electrolyte containing lithium from shredded waste secondary batteries by a chemical method.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

La présente invention concerne un procédé de retraitement d'une batterie secondaire au lithium usagée, le procédé comprenant les étapes consistant à : broyer primairement une batterie secondaire usagée comprenant un électrolyte en une taille de 8 à 15 mm ; retirer le séparateur à l'aide de la flottabilité tout en extrayant l'électrolyte contenant du lithium du matériau primairement broyé à l'aide d'un solvant dans un premier réacteur d'extraction ; sécher le matériau primairement broyé dans un séchoir ; retirer un composant de fer du matériau broyé par l'intermédiaire d'un processus de séparation magnétique ; broyer secondairement le matériau broyé avec des composants de fer retirés de celui-ci en une taille de 5 à 8 mm ; séparer une plaque d'électrode en cuivre du matériau secondairement broyé à l'aide d'un second séparateur ; broyer troisièmement le matériau broyé à plaque d'électrode en cuivre séparée en une taille de 1 à 5 mm pour séparer une plaque d'électrode en aluminium et un matériau actif d'électrode positive du matériau broyé ; extraire une masse noire comprenant la plaque d'électrode en aluminium et le matériau actif d'électrode positive ; et séparer la masse noire incluse dans le solvant contenant du lithium utilisé dans l'étape d'extraction d'électrolyte à l'aide d'un séparateur.
PCT/KR2024/008917 2023-06-30 2024-06-26 Procédé de retraitement d'une batterie secondaire au lithium usagée Pending WO2025005665A1 (fr)

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KR1020230084655A KR102861167B1 (ko) 2023-06-30 2023-06-30 폐 리튬 이차전지 재처리 방법
KR10-2023-0084655 2023-06-30

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KR20230038506A (ko) * 2020-10-04 2023-03-20 후난 진 위엔 뉴 머터리얼즈 조인트 스탁 컴퍼니 리미티드 폐 리튬 이온 배터리의 분해 분리 방법
CN112958588A (zh) * 2021-01-29 2021-06-15 上海净颖环保科技股份有限公司 一种废旧电池安全回收拆解系统及其拆解方法
KR102317034B1 (ko) * 2021-02-28 2021-10-26 주식회사 비티에스이엔지 리튬이온 폐배터리의 대용량 처리용 비폭발식 분쇄공정 및 소재 분별 시스템
KR102334855B1 (ko) * 2021-07-16 2021-12-03 에스아이에스 주식회사 폐리튬이차전지 일괄처리시스템

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