WO2018047147A1 - Procédé de récupération de cobalt pur et de nickel à partir de batteries au lithium usées - Google Patents

Procédé de récupération de cobalt pur et de nickel à partir de batteries au lithium usées Download PDF

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Publication number
WO2018047147A1
WO2018047147A1 PCT/IB2017/055498 IB2017055498W WO2018047147A1 WO 2018047147 A1 WO2018047147 A1 WO 2018047147A1 IB 2017055498 W IB2017055498 W IB 2017055498W WO 2018047147 A1 WO2018047147 A1 WO 2018047147A1
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WO
WIPO (PCT)
Prior art keywords
nickel
cobalt
lithium
aluminium
copper
Prior art date
Application number
PCT/IB2017/055498
Other languages
English (en)
Inventor
Nitin Gupta
G. Prabaharan
Smruti Prakash BARIK
Original Assignee
Attero Recycling Pvt. Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Attero Recycling Pvt. Ltd. filed Critical Attero Recycling Pvt. Ltd.
Publication of WO2018047147A1 publication Critical patent/WO2018047147A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B23/00—Obtaining nickel or cobalt
    • C22B23/04—Obtaining nickel or cobalt by wet processes
    • C22B23/0476—Separation of nickel from cobalt
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/22—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
    • C22B3/24—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition by adsorption on solid substances, e.g. by extraction with solid resins
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/34—Preparation of aluminium hydroxide by precipitation from solutions containing aluminium salts
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G45/00—Compounds of manganese
    • C01G45/02—Oxides; Hydroxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G53/00—Compounds of nickel
    • C01G53/06—Carbonates
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/005—Preliminary treatment of scrap
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B23/00—Obtaining nickel or cobalt
    • C22B23/04—Obtaining nickel or cobalt by wet processes
    • C22B23/0407—Leaching processes
    • C22B23/0415—Leaching processes with acids or salt solutions except ammonium salts solutions
    • C22B23/043—Sulfurated acids or salts thereof
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B23/00—Obtaining nickel or cobalt
    • C22B23/04—Obtaining nickel or cobalt by wet processes
    • C22B23/0453—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B23/0461—Treatment or purification of solutions, e.g. obtained by leaching by chemical methods
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/006—Wet processes
    • C22B7/007—Wet processes by acid leaching
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • 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

Definitions

  • the present invention relates to an improved process of recovering metals of value from spent Lithium batteries. More particularly, the invention provides a method for recovering cobalt and Nickel from spent lithium batteries. The method comprises eco-friendly yet efficient procedure for recovering valuable metals in highly purified and saleable form.
  • lithium batteries appear to be all over, as they provide energy for most compact electronics, hardware tools, electric vehicles, and the like.
  • Lithium battery refers to a family of batteries with variable chemistries.
  • lithium batteries may be classified as lithium-metal batteries and lithium-ion/lithium-polymer batteries.
  • the former one are usually, non rechargeable kind of batteries that are commonly used in calculators, cameras, watches, etc. They are comprised of cells, containing highly reactive lithium metal.
  • the lithium-ion/lithium-polymer batteries are rechargeable batteries that are used in cell phones, laptops, electric vehicles, wireless devices and the like.
  • the lithium-ion batteries comprise cells, containing lithium in ionic form.
  • Lithium-ion batteries use an intercalated lithium compound as one electrode material, compared to the metallic lithium, used in a non-rechargeable lithium battery.
  • the electrolyte, which allows for ionic movement, and the two electrodes are the constituent components of a lithium-ion cell.
  • Lithium polymer batteries are the rechargeable batteries, which can be used over a long period. They utilize a solid polymer composite such as polyacrylonitrile as a physical separator that minimize the risk for internal shorting that tend to cause fires and explosions. Accordingly, lithium batteries are common in consumer electronics. They are one of the most popular types of rechargeable batteries for portable electronics, with a high energy density, no memory effect, and only a slow loss of charge when not in use. Beyond consumer electronics, lithium batteries are also growing in popularity for military, battery electric vehicle and aerospace applications. For example, lithium batteries are becoming a common replacement for the lead acid batteries that have been used historically for golf carts and utility vehicles.
  • lithium battery packs that can provide the same voltage as lead-acid batteries, so no modification to the vehicle's drive system is required. Due to its merits, such as a high electrical energy density, a high working voltage, a long cyclic life and no memory effect, etc.
  • the lithium battery has been recognized as a battery system with a high potential for a developmental point of view.
  • lithium batteries are witnessing tremendous market growth. Consequently, along with an increase in the use of lithium batteries, a system for recycling and regenerating waste lithium batteries should be developed to solve the problems of contamination and risks associated with the use of lithium batteries.
  • the batteries are processed through a hammer mill and the screened -25 mesh slurry filtered and packaged.
  • This slurry contains about 30% metals from the cathode along with the carbon.
  • This metal rich mixture is shipped to an electric smelter for utilization in making steels.
  • the copper and Aluminium foils are separately recovered from the process. Although the valuable cobalt and nickel is recovered along with the manganese for scrap metal prices, the full value of the lithium metal oxide cathode material is lost and usually with no recovery of the lithium metal oxide. It would be a major improvement in the recycling of strategic materials and would lower the cost of lithium batteries if the full value of the lithium metal oxide cathode material could be achieved by complete recovery and regeneration for direct reuse in a new lithium battery.
  • US 8882007 Bl discloses a process for recovering and regenerating lithium cathode material from lithium-ion batteries.
  • the method includes the steps of isolating the cathode particles and then regenerating the cathode particles for use in the same type of battery, involves the wet crushing of the used batteries, then wet screening to remove the coarser electrode foils, plastic and separators from the slurry of the mixed fine electrode materials, comprising the lithium metal oxides and mixed oxides and carbon anode materials.
  • the mixed fine electrode materials comprising the lithium metal oxides and mixed oxides and carbon anode materials.
  • only one cathode type of lithium-ion battery is processed in order to have only one type of lithium-ion cathode material in the slurry mix.
  • the main drawback of the present invention is the high precision required to carry out the process such as wet crushing the batteries using either water or under the presence of nitrogen or both.
  • the heating temperature in the invention has to be precisely maintained such that it destroys the binder that may modify the surface of carbon and does not burn the anode carbon.
  • the recovery and reuse of the cathode material would lessen pressure on supply of lithium cathode materials such as nickel and cobalt.
  • the cathode materials require extremely high purity levels and must be almost entirely free of unwanted metal impurities such as iron, vanadium and sulphur.
  • the known processes in the art majorly use harmful chemicals to recover the metals in high quantity.
  • state of the art physical processes do not result into satisfactory recovery of metals, in quantitative as well as qualitative terms. Accordingly, there is required an eco-friendly and cost effective method to recover metal of values in good quantity without compromising on the quality.
  • the main object of the present invention is to provide an improved method and process of recovering cobalt, nickel and other valuable metals from spent Lithium batteries.
  • Yet another object of the present invention is to provide a process that recovers cobalt and nickel in their highly purified or saleable form.
  • Yet another object of the present invention is to provide a process for recovering other metals including manganese, aluminium, abundant in lithium batteries.
  • Yet another object of the present invention is to provide an approach that utilizes least amount of chemical reactants in the overall recovery process.
  • Yet another object of the present invention is to provide an approach that selectively adsorbs the metals to avoid contamination of other metals or impurities, for effective recovery of metal values in purified form.
  • Still another object of the invention is to provide an eco-friendly and cost effective method to recover metal of values in good quantity without compromising on the quality.
  • the present invention relates to an improved method and process for recovery of valuable metals from spent lithium batteries in their highly purified and saleable form.
  • the spent lithium batteries are taken and shredded in a wet environment.
  • the shredded batteries are sent for wet screening to separate coarser particles containing copper, iron, aluminium, shredded plastic contents, and finer particles containing lithium, nickel, cobalt and manganese, etc.
  • the finer particles contain valuable materials like cobalt, nickel, and manganese wherein cobalt and nickel are recovered in saleable form using a selective adsorption technique.
  • the finer particles obtained after wet screening are pass through a resin column filled with adsorbents or resins for selectively loading the particular type of metals.
  • the method of the present invention provides benefits including low processing costs, recovery of nickel and cobalt in pure and saleable form, thereby producing greater social and economical benefits.
  • the method of recovering value metals from spent lithium batteries comprises the steps of: a) shredding the lithium batteries in water using a shredder, with water level well above the level of the batteries being shredded to obtain a slurry and shredded plastic and polymer;
  • step b) removing the plastic and polymer that floats on the water in step a); c) wet screening the slurry obtained in step a) through sieve of at least 600 ⁇ size to separate coarse and fine particles; wherein coarse particles containing copper, aluminium, steel and printed circuit boards from screened slurry are retained by the sieve and fine particles containing cobalt, manganese, copper, nickel, aluminium and lithium are aggregated; d) leaching a part of fine particles from step c) in a leaching cell using water and sulphuric acid by maintaining a pH of 0.8-1.2 and filtering to collect leach liquor containing cobalt, manganese, copper, nickel, aluminium and lithium and dried residue containing graphite;
  • step d) removing aluminium as aluminium hydroxide at a pH ranging from 4 to 5 maintained using caustic soda solution by agitating the leach liquor of step d) with a 30% (w/v) NaOH solution;
  • step f) feeding the leach liquor from step f) into electrolytic cell for obtaining pure cobalt at cathode and electrolytic manganese dioxide at anode;
  • step i) purifying nickel using sulphuric acid solution and precipitating said solution at pH 9-9.5 as nickel carbonate using soda ash solution and drying the precipitate thus obtained at 110° C for 2 hours; wherein the Co-Metal and Mn0 2 recovered in step i) has purity of 99.9% and 96.5%, respectively; and
  • the nickel carbonate obtained in step k) has a purity of 98.28%.
  • Figure 1 elucidates the flow sheet of the process according to an embodiment of the invention.
  • the present invention provides a novel method for recovery of high value metals from spent lithium batteries shred wherein different processes are carried out in a manner that such physical processes including wet shredding, washing, floatation to separate light materials like polymer /plastics, wet sieving and selective adsorption without any harmful chemical process helps in recovering cobalt, electrolytic manganese dioxide and nickel yield in a highly pure form.
  • Figure 1 elucidates the process and method for recovering metals of value from used Lithium batteries (LB's) without substantial use of chemical solutions.
  • the process majorly depends of physical separation of the metals and selective adsorption or loading of metals by passing the metal rich liquor through a resin column.
  • the process recovers valuable metals without compromising on the quality of the recovered products and by-products.
  • the method of recovering value metals from spent lithium batteries comprises the steps of: a) shredding the lithium batteries in water using a shredder, with water level well above the level of the batteries being shredded to obtain a slurry and shredded plastic and polymer;
  • step b) removing the plastic and polymer that floats on the water in step a);
  • step c) wet screening the slurry obtained in step a) through sieve of at least 600 ⁇ size to separate coarse and fine particles; wherein coarse particles containing copper, aluminium, steel and printed circuit boards from screened slurry are retained by the sieve and fine particles containing cobalt, manganese, copper, nickel, aluminium and lithium are aggregated; d) leaching a part of fine particles from step c) in a leaching cell using water and sulphuric acid by maintaining a pH of 0.8-1.2 and filtering to collect leach liquor containing cobalt, manganese, copper, nickel, aluminium and lithium and dried residue containing graphite;
  • step d) removing aluminium as aluminium hydroxide at a pH ranging from 4 to 5 maintained using caustic soda solution by agitating the leach liquor of step d) with a 30% (w/v) NaOH solution;
  • step f) feeding the leach liquor from step f) into electrolytic cell for obtaining pure cobalt at cathode and electrolytic manganese dioxide at anode;
  • the Co-Metal and Mn0 2 recovered in step i) has purity of 99.9% and 96.5%, respectively;
  • the nickel carbonate obtained in step k) has a purity of 98.28%.
  • the lithium batteries are shredded and sieved in a wet environment.
  • the undersized particles are washed separately and filtered to obtain filtrate and residue.
  • Residue obtained after filtration is sent for leaching step using sulphuric acid at a pH ranging from 0.8 to 1.2.
  • the aluminium content is removed from leach liquor by adjusting the pH to 4.5 using sodium hydroxide.
  • the aluminium free liquor was purified by passing it through a column containing resins for selectively loading nickel and other impurities.
  • the purified leach liquor was sent for electrolysis process for separation of cobalt and electrolytic manganese dioxide.
  • the pure cobalt metal is obtained from the purified liquor by passing the current at a temperature ranging from 90-100 °C.
  • nickel is stripped out from the resin by using an acid and soda ash treatment. The nickel is recovered as Nickel carbonate.
  • the process of the present invention provides several advantages over the techniques available in the present state of the art, i.e., it doesn't utilize high temperature exposures.
  • the metals are selectively adsorbed using suitable adsorbents or resins.
  • the selective adsorption avoids contamination of other metals, impurities and provides desired metals in their purified form.
  • the purity of the cobalt metal and Nickel carbonate obtained was found to be 99.9%.
  • the aluminum free liquor was passed through a column containing 2 L of resin (Cu and Ni selective). For each cycle, 2 L of leach liquor was passed through the resin column for purification. After loading, nickel and copper were stripped out from the loaded resin by using sulphuric acid of concentrations 5% and 15%, respectively (10 L each). The resin after stripping was washed with water and the regenerated resin was reused for the next cycle. The overall leach liquor was purified in eight cycles. The purified leach liquor-3 and the strip solutions obtained after 8 cycles were presented in Table.4 wherein BDL is a quantity below detection limit.
  • the purified leach liquor-3 (17.8 L) was fed into electrolytic cell (containing 5 of lead anodes and 4 of SS-316 cathodes wherein cathode electrode is made of a SS316 stainless steel on which carbon nanotube (CNT) and iron phthalocyanine (FePc) are deposited sequentially) for the preparation of high pure cobalt from cathode and electrolytic manganese dioxide from the anode by passing current 50 Ampere at 90-100 °C.
  • electrolytic cell containing 5 of lead anodes and 4 of SS-316 cathodes wherein cathode electrode is made of a SS316 stainless steel on which carbon nanotube (CNT) and iron phthalocyanine (FePc) are deposited sequentially
  • CNT carbon nanotube
  • FePc iron phthalocyanine
  • Ni-strip solution (10 L) was purified using the resin by loading and stripping with the same procedure. Nickel from the purified solution was precipitated at pH 9-9.5 as nickel carbonate using soda ash solution. The precipitated mass obtained was dried at 110° C for 2 h. The purity of nickel carbonate was analyzed and found to be 98.28%. The chemical analysis of dried nickel carbonate is presented in the Table 7.

Abstract

L'invention concerne une méthode et un procédé améliorés de récupération de métaux de valeur à partir de batteries au lithium usées sous une forme hautement purifiée et commercialisable. Les batteries au lithium usées sont déchiquetées dans un environnement humide et criblées par voie humide pour séparer les particules les plus grosses contenant du cuivre, du fer, de l'aluminium, des contenus plastiques déchiquetés, et les particules plus fines contenant des matériaux de valeur tels que le lithium, le cobalt, le nickel et le manganèse, le cobalt et le nickel étant récupérés sous une forme commercialisable à l'aide d'une technique d'adsorption sélective. Les particules plus fines obtenues sont passées à travers une colonne de résine remplie d'adsorbants ou de résines pour charger sélectivement le type particulier de métaux. La présente invention procure des avantages comprenant de faibles coûts de traitement, la récupération de nickel et de cobalt sous une forme pure et commercialisable, produisant ainsi des avantages sociaux et économiques plus importants.
PCT/IB2017/055498 2016-09-12 2017-09-12 Procédé de récupération de cobalt pur et de nickel à partir de batteries au lithium usées WO2018047147A1 (fr)

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IN201611031052 2016-09-12
IN201611031052 2016-09-12

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108866337A (zh) * 2018-05-30 2018-11-23 江苏佳宇资源利用股份有限公司 一种处理金属污泥的方法
CN111203172A (zh) * 2020-01-08 2020-05-29 山东建筑大学 回收废旧锂离子电池正极材料制备重金属吸附剂的方法
CN112410538A (zh) * 2020-11-17 2021-02-26 湖南仁发材料科技有限公司 一种铜钴铁合金综合回收有价金属的生产工艺
CN112921356A (zh) * 2021-01-22 2021-06-08 西南科技大学 一种从废旧印刷线路板中回收铜的方法
CN113621802A (zh) * 2020-05-07 2021-11-09 贵州中伟资源循环产业发展有限公司 一种从废旧三元电池极片中回收镍钴锰锂的方法
CN113908977A (zh) * 2021-11-08 2022-01-11 湖南江冶机电科技股份有限公司 一种废旧锂电池的回收工艺
CN114272678A (zh) * 2021-11-17 2022-04-05 合肥国轩电池材料有限公司 一种磷酸铁锂粉体材料工业湿筛处理设备及其处理方法
WO2022233340A1 (fr) * 2021-09-16 2022-11-10 中国科学院大学 Catalyseur de combustion de cov préparé à partir de batteries au lithium-ion ternaire usagées recyclées, et son procédé de préparation
WO2023020039A1 (fr) * 2021-08-17 2023-02-23 广东邦普循环科技有限公司 Procédé de récupération par voie humide de métaux valorisables dans une batterie au lithium
WO2023029573A1 (fr) * 2021-09-06 2023-03-09 广东邦普循环科技有限公司 Procédé d'extraction de lithium à partir d'une batterie au lithium-ion
CN116835543A (zh) * 2023-07-07 2023-10-03 江西华赛新材料有限公司 一种磷酸铁锂粉回收工艺

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US6514311B1 (en) * 2001-08-20 2003-02-04 Industrial Technology Research Institute Clean process of recovering metals from waste lithium ion batteries
EP2450991A1 (fr) * 2010-10-18 2012-05-09 ECO Recycling s.r.l. Installation et procédé pour le traitement d'accumulateurs et de batteries usagés

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
US6514311B1 (en) * 2001-08-20 2003-02-04 Industrial Technology Research Institute Clean process of recovering metals from waste lithium ion batteries
EP2450991A1 (fr) * 2010-10-18 2012-05-09 ECO Recycling s.r.l. Installation et procédé pour le traitement d'accumulateurs et de batteries usagés

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108866337A (zh) * 2018-05-30 2018-11-23 江苏佳宇资源利用股份有限公司 一种处理金属污泥的方法
CN111203172A (zh) * 2020-01-08 2020-05-29 山东建筑大学 回收废旧锂离子电池正极材料制备重金属吸附剂的方法
CN111203172B (zh) * 2020-01-08 2023-05-19 山东建筑大学 回收废旧锂离子电池正极材料制备重金属吸附剂的方法
CN113621802A (zh) * 2020-05-07 2021-11-09 贵州中伟资源循环产业发展有限公司 一种从废旧三元电池极片中回收镍钴锰锂的方法
CN112410538A (zh) * 2020-11-17 2021-02-26 湖南仁发材料科技有限公司 一种铜钴铁合金综合回收有价金属的生产工艺
CN112921356B (zh) * 2021-01-22 2022-05-27 西南科技大学 一种从废旧印刷线路板中回收铜的方法
CN112921356A (zh) * 2021-01-22 2021-06-08 西南科技大学 一种从废旧印刷线路板中回收铜的方法
WO2023020039A1 (fr) * 2021-08-17 2023-02-23 广东邦普循环科技有限公司 Procédé de récupération par voie humide de métaux valorisables dans une batterie au lithium
GB2621776A (en) * 2021-08-17 2024-02-21 Guangdong Brunp Recycling Technology Co Ltd Method for wet recovery of valuable metals in lithium battery
WO2023029573A1 (fr) * 2021-09-06 2023-03-09 广东邦普循环科技有限公司 Procédé d'extraction de lithium à partir d'une batterie au lithium-ion
GB2623222A (en) * 2021-09-06 2024-04-10 Guangdong Brunp Recycling Technology Co Ltd Method for extracting lithium from waste lithium battery
WO2022233340A1 (fr) * 2021-09-16 2022-11-10 中国科学院大学 Catalyseur de combustion de cov préparé à partir de batteries au lithium-ion ternaire usagées recyclées, et son procédé de préparation
CN113908977A (zh) * 2021-11-08 2022-01-11 湖南江冶机电科技股份有限公司 一种废旧锂电池的回收工艺
CN114272678A (zh) * 2021-11-17 2022-04-05 合肥国轩电池材料有限公司 一种磷酸铁锂粉体材料工业湿筛处理设备及其处理方法
CN116835543A (zh) * 2023-07-07 2023-10-03 江西华赛新材料有限公司 一种磷酸铁锂粉回收工艺

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