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公开(公告)号：EP4372112A3
公开(公告)日：2024-10-30
申请号：EP24159949.7
申请日：2020-04-14
申请人： Northvolt AB
发明人： ALEMRAJABI, Mahmood , KARLSSSON, Ingrid , SJÖDAHL, Ragnar , NEHRENHEIM, Emma , PETRANIKOVA, Martina , TUNSU, Cristian
摘要： A process for removal of aluminium and iron in the recycling of rechargeable batteries comprising providing a leachate from black mass, adding phosphoric acid (H 3 PO 4 ) to said leachate and adjusting the pH to form iron phosphate (FePO 4 ) and aluminium phosphate (AlPO 4 ), precipitating and removing the formed FePO 4 and AlPO 4 , and forming a filtrate for further recovery of cathode metals, mainly NMC-metals and lithium.
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公开(公告)号：EP4324949A1
公开(公告)日：2024-02-21
申请号：EP22863039.8
申请日：2022-08-09
发明人： XU, Kaihua , JIANG, Liangxing , YANG, Jian , ZHANG, Kun , LI, Chenwei , CHEN, Yongan , LAI, Yanqing
IPC分类号： C22B26/12 , C01F11/22 , C22B1/02 , H01M10/0525 , C22B1/00 , C22B47/00 , C22B7/00 , H01M10/54 , C22B23/00
摘要： The present invention provides a method for recovering valuable metals from waste lithium ion batteries. The method comprises: short-circuit discharging, dismantling, crushing, roasting, and screening on waste lithium ion batteries to obtain active electrode powders; using alkaline solution to wash the active electrode powders, then filtering to remove copper and aluminum; drying the activated electrode powder after alkaline washing treatment, mix the dried activated electrode powder with starch and concentrated sulfuric acid and stir evenly to obtain the mixed material; calcining the mixed material with controlling the atmosphere; taking out the product obtained from calcination and using deionized water to extract the leachate and leaching residue with valence metal ions, and then obtaining the leachate after filtering. The present invention can reduce the concentration of impurity ions in the leaching solution, improve the purity and comprehensive recovery rate of valuable metals, and reduce the recovery cost.
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公开(公告)号：EP4321640A1
公开(公告)日：2024-02-14
申请号：EP22940497.5
申请日：2022-07-07
发明人： ZHONG, Minglong
摘要： A method for recovering hafnium and impurity metals from a hafnium-containing waste residue, comprises dissolving the waste residue in sulfuric acid and ammonium sulfate to obtain an acidic solution, adjusting acidity of the acidic solution, and adding a complexing agent to obtain a material solution; conducting extraction to obtain a hafnium-loaded organic phase and an impurity metal ions-containing aqueous phase; subjecting the hafnium-loaded organic phase to purification, stripping, precipitation, and filtration, and washing and burning to obtain hafnium oxide; precipitating the impurity metal ions-containing aqueous phase, washing a resulting precipitate to remove the complexing agent; dissolving a resulting precipitates of the impurity metal ions in sulfuric acid, and adjusting acidity of a resulting solution to obtain a solution of the impurity metal ions; extracting the solution of the impurity metal ions to obtain an impurity metal ions-loaded organic phase, purifying and stripping to obtain oxides of the impurity metals. In a hafnium oxide product obtained by the recovery method of the present disclosure, purity of hafnium oxide stably reaches 99.99% or more, or even reaches 99.999%, or 10 ppm or lower, and purity of oxides of impurity metals is greater than 97%.
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公开(公告)号：EP3945068B1
公开(公告)日：2024-01-17
申请号：EP21167321.5
申请日：2021-04-08
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公开(公告)号：EP4294954A1
公开(公告)日：2023-12-27
申请号：EP22843890.9
申请日：2022-12-26
发明人： ARIYOSHI,Hirotaka , ITO,Junichi , ARAKAWA,Junichi , ABE,Hiroshi
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公开(公告)号：EP4282997A2
公开(公告)日：2023-11-29
申请号：EP23174776.7
申请日：2023-05-23
申请人： II-VI Delaware, Inc.
发明人： Abrenica, Gomer , Nazari, Ghazaleh
IPC分类号： C22B3/08 , C22B3/22 , C22B3/38 , C22B3/44 , C22B7/00 , C22B3/00 , C22B26/10 , C22B26/12 , C22B47/00 , B01D11/02 , C01D15/06 , C01D15/08 , C22B3/24 , C22B3/42
摘要： A process for recovering and purifying nickel (Ni), manganese (Mn), cobalt (Co), and lithium (Li) from black mass obtained from recycling of lithium-ion batteries to produce high purity products. The process may include reductive acid leaching, impurity removal, precipitation of valuable metals such as Ni, Co, Mn, and Li. The process may also include recycling of Li compounds as hydroxide or carbonate as a source of alkaline reagent for impurity removal and/or precipitation of the valuable metals.
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公开(公告)号：EP4206340A1
公开(公告)日：2023-07-05
申请号：EP21884384.5
申请日：2021-04-30
申请人： Guangdong Brunp Recycling Technology Co., Ltd , Hunan Brunp Recycling Technology Co., Ltd. , Hunan Brunp EV Recycling Co., Ltd.
发明人： YU, Haijun , PENG, Ting , XIE, Yinghao , ZHANG, Xuemei
摘要： The present invention belongs to the technical field of resource recovery. Disclosed is an incomplete extraction method for recycling batteries, comprising the following steps: introducing a pretreatment gas into a device loaded with a waste battery powder, and bringing a gas outlet into communication with absorption liquid A and absorption liquid B in order; raising the temperature and introducing the pretreatment gas; reducing the temperature and introducing a reaction gas; raising the temperature, introducing the reaction gas, and then introducing the pretreatment gas; and reducing the temperature, and turning off the pretreatment gas; adding an extractant to absorption liquid A, mixing the mixture, taking organic phase A, adding a stripping agent, and taking aqueous phase A; and adjusting the pH to acidity, then adding an extractant, taking organic phase B, adding a stripping agent to obtain a stock solution enriched in Li, Mn, Ni and Co, wherein the pretreatment gas is at least one of nitrogen, helium, argon or neon; the reaction gas is chlorine gas, fluorine gas or bromine gas; absorption liquid A is an acid solution; and absorption liquid B is an alkaline solution. The present invention differs from a complete extraction method for recycling batteries in that when using the incomplete extraction recovery method, a chlorination volatilization reaction is carried out prior to using an extraction method to extract the required metal elements Li, Mn, Ni and Co with an extraction rate of 99.86-99.98%.
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9.发明公开
公开(公告)号：EP4189128A1
公开(公告)日：2023-06-07
申请号：EP21755730.5
申请日：2021-08-02
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10.发明公开
公开(公告)号：EP4159881A1
公开(公告)日：2023-04-05
申请号：EP21813087.0
申请日：2021-05-19
发明人： WANG, Xue
摘要： Disclosed are applications of a carboxylic compound serving as an extracting agent and a metal ion extraction method. The carboxylic compound is provided with the structure as represented by formula I. The extracting agent as represented by formula I is characterized by a secondary atom at position α of the carboxyl group, in distinction from a primary carbon carboxylic acid at position α and a tertiary carbon carboxylic acid at position α, the presence of a secondary carbon carboxylic acid provides a proper steric hindrance, provides improved selectivity with respect to ions, and provides a high separation coefficient, low stripping acidity, and high load rate when used for the extraction and separation of metal ions; moreover, the carboxylic compound of formula I has great stability and low aqueous solubility, allows an extraction process to be stable, reduces environmental pollution, reduces costs, and provides significant application prospects.
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