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公开(公告)号：US20230049078A1
公开(公告)日：2023-02-16
申请号：US17788974
申请日：2020-12-08
发明人： Myoung Lae KIM , Ji Yun PARK , Hyeon Hui LEE
摘要： A method of recovering a cathode active material precursor according to an embodiment of the present invention includes preparing a cathode active material mixture including a lithium composite oxide, separating lithium from the cathode active material mixture to form a preliminary transition metal precursor, acid-treating the preliminary transition metal precursor to form a complex transition metal salt solution, and adding an acidic extractant to the complex transition metal salt solution and then adding a basic compound to recover a transition metal precursor, and thus the extraction rate of transition metals can be improved.
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公开(公告)号：US20230042034A1
公开(公告)日：2023-02-09
申请号：US17967424
申请日：2022-10-17
申请人： Northvolt AB
发明人： Mahmood ALEMRAJABI , Ingrid KARLSSON , Ragnar SJÖDAHL , Emma NEHRENHEIM , Martina PETRANIKOVA , Cristian TUNSU
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 (H3PO4) to said leachate and adjusting the pH to form iron phosphate (FePO4) and aluminium phosphate (AlPO4), precipitating and removing the formed FePO4 and AlPO4, and forming a filtrate for further recovery of cathode metals, mainly NMC-metals and lithium.
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3.发明申请公开(公告)号：US20220384868A1
公开(公告)日：2022-12-01
申请号：US17789970
申请日：2019-12-31
申请人： JINGMEN GEM CO., LTD , GEM CO., LTD
发明人： Kaihua XU , Zhenkang JIANG , Qinxiang LI , Kun ZHANG , Wenjie WANG , Jun WANG , Shihong WEN
IPC分类号： H01M10/54 , C01D15/04 , C01F11/22 , C01F5/28 , C01G53/00 , C01G51/00 , C01G45/00 , C22B47/00 , C22B3/00
摘要： Provided are a battery-level Ni—Co—Mn mixed solution and a preparation method for a battery-level Mn solution, the steps thereof comprising: acid dissolution (S1), alkalization to remove impurities (S2), synchronous precipitation of calcium, magnesium, and lithium (S3), deep ageing to remove impurities (S4), synergistic extraction (S5), and refining extraction (S6).
The steps of deep ageing to remove impurities (S4) and synergistic extraction (S5) comprise: performing deep ageing on a filtrate obtained from the step of synchronous precipitation of calcium, magnesium, and lithium (S3), and after performing filtration to remove impurities, obtaining an aged filtrate; using P204 to extract the aged filtrate and obtain a loaded organic phase, and subjecting the loaded organic phase to staged back-extraction to obtain the battery-level Ni—Co—Mn mixed solution and a Mn-containing solution. By means of the cooperation between the multiple process steps of synchronous precipitation of calcium, magnesium, and lithium (S3), deep ageing to remove impurities (S4), and synergistic extraction (S5), the impurity content of the obtained battery-level Ni—Co—Mn mixed solution is significantly lowered, and the battery-level Ni—Co—Mn mixed solution can be directly used to prepare a lithium battery ternary precursor material. At the same time, the battery-level Mn solution can also be obtained, which is favorable for large-scale applications of the process and increasing economic benefits.-
公开(公告)号：US20220223933A1
公开(公告)日：2022-07-14
申请号：US17603998
申请日：2020-04-17
申请人： UMICORE
发明人： Pieter VERHEES , Bart KLAASEN , Willem CALLEBAUT
摘要： The invention concerns a process for the recovery of metals such as Ni and Co from a Li-containing starting material.
In particular, this process concerns the recovery of metals M from a Li-containing starting material, wherein M comprises Ni and Co, comprising the steps of:
Step 1: Providing said starting material, comprising Li-ion batteries or their derived products; Step 2: Removing Li in an amount of more than the maximum of (1) 30% of the Li present in said starting material, and (2) a percentage of the Li present in said starting material determined to obtain a Li:M ratio of less than 0.70 in a subsequent acidic leaching step; Step 3: Subsequent leaching using relative amounts of Li-depleted product and a mineral acid, thereby obtaining a Ni- and Co-bearing solution; and, Step 4: Crystallization of Ni, Co, and optionally Mn. Due to the lower reagent consumption and higher Ni and/or Co concentration during hydrometallurgical processing, the invention is an efficient and economic process for the production of crystals suitable for battery material production.-
公开(公告)号：US20220152626A1
公开(公告)日：2022-05-19
申请号：US17590352
申请日：2022-02-01
申请人： Li-Cycle Corp.
IPC分类号： B03B9/06 , B02C23/36 , B03C1/23 , C22B1/00 , C22B7/00 , C22B21/00 , C22B3/00 , C22B26/12 , C22B47/00 , H01M10/0525 , H01M10/54
摘要： A process for recovering materials from a black mass material obtained from lithium-ion batteries can include: i) conveying a black mass material as a black mass solid stream; ii) leaching the black mass solid stream to form a pregnant leach solution and residual solids; iii) separating the pregnant leach solution from the residual solids; iv) isolating a copper product from the pregnant leach solution; v) isolating an aluminum (Al) and/or iron (Fe) product from the pregnant leach solution; vi) isolating a manganese (Mn) product from the from the pregnant leach solution; vii) isolating a cobalt (Co) product from the from the pregnant leach solution; viii) isolating a nickel (Ni) product from the from the pregnant leach solution; ix) isolating a salt by-product from the pregnant leach solution; and x) isolating a lithium product the pregnant leach solution.
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公开(公告)号：US11316208B2
公开(公告)日：2022-04-26
申请号：US17218863
申请日：2021-03-31
IPC分类号： H01M10/54 , H01M4/50 , H01M4/52 , H01M4/58 , H01M10/05 , H01M10/42 , H01M10/0525 , H01M4/505 , H01M4/525 , H01M4/583 , C01G53/00 , C22B3/00 , C22B47/00
摘要： A process for recovering a nickel cobalt manganese hydroxide from recycled lithium-ion battery (LIB) material such as black mass, black powder, filter cake, or the like. The recycled LIB material is mixed with water and either sulfuric acid or hydrochloric acid at a pH less than 2. Cobalt, nickel, and manganese oxides from the recycled lithium-ion battery material dissolve into the acidic water with the reductive assistance of gaseous sulfur dioxide. Anode carbon is filtered from the acidic water, leaving the dissolved cobalt, nickel, and manganese oxides in a filtrate. The filtrate is mixed with aqueous sodium hydroxide at a pH greater than 8. Nickel cobalt manganese hydroxide precipitates from the filtrate. The nickel cobalt manganese hydroxide is filtered from the filtrate and dried. The filtrate may be treated ammonium fluoride or ammonium bifluoride to precipitate lithium fluoride from the filtrate. The composition ratio of nickel to cobalt to manganese in the acid filtrate may be adjusted to a desired ratio. The anode carbon is recovered and purified for reuse.
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公开(公告)号：US20220074018A1
公开(公告)日：2022-03-10
申请号：US17415865
申请日：2019-12-10
申请人： UMICORE
发明人： Michel DANIELS , Jean SCOYER , Michael BALTES , Margot NEVEN , Jan LEYSSEN
摘要： The present disclosure concerns a process for the recovery of valuable metals from polymetallic nodules. A two-stage process using SO2 in an acidic aqueous media is disclosed. In a first step, performed in mildly acidic conditions, Mn, Ni, and Co are dissolved; in a second, more acidic step, Cu is dissolved. Under these conditions, the leachate of the first step contains most of the Mn, Ni, and Co, while being nearly Cu-free. The Ni and Co are precipitated as sulfides; the Mn can be recovered as sulfate by crystallization. Cu, which is leached in the second step, is secretively precipitated, also as sulfide.
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公开(公告)号：US20210384563A1
公开(公告)日：2021-12-09
申请号：US17341616
申请日：2021-06-08
发明人： Eric Gratz , Zhangfeng Zheng
摘要： A method for recycling anode materials from a comingled recycling stream derived from exhausted Li ion batteries includes receiving a precipitate quantity remaining from a cathode recycling stream. This precipitate is almost exclusively graphite used for the anode material in the recycled batteries. The precipitate results from an acid leach of charge material from the lithium battery recycling stream. A strong acid is added to the precipitate for removal of residual cathode and separator materials and the mixture heated. The strong acid removes residual aluminum oxide from the separator by transformation to aluminum sulfate. Washing the acid treated precipitate removes water soluble contaminants, such as the aluminum sulfate reacted from the aluminum oxide and sulfuric acid, to generate substantially pure graphite. Any residual material remaining from the cathode recycling phase is also removed.
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公开(公告)号：US10811695B2
公开(公告)日：2020-10-20
申请号：US15563007
申请日：2016-04-08
发明人： David Muska , Donald Goedde , Richard Resnick
摘要： The present technology relates to processes for recycling alkaline and/or carbon zinc batteries. In particular, the present technology relates to a process for recycling alkaline and/or carbon zinc batteries that provides a consistent and measurable amount of material (e.g., discarded batteries) to be recycled and may enhance the recovery of certain materials during the recycling process.
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公开(公告)号：US10522884B2
公开(公告)日：2019-12-31
申请号：US15358862
申请日：2016-11-22
发明人： Yan Wang , Eric Gratz , Qina Sa , Zhangfeng Zheng , Joseph Heelan
IPC分类号： H01M10/00 , H01M10/54 , C01G53/00 , C22B3/02 , C22B7/00 , C22B47/00 , H01M4/505 , H01M4/525 , C22B26/12 , H01M10/0525
摘要： Cathode material from exhausted lithium ion batteries are dissolved in a solution for extracting the useful elements Co (cobalt), Ni (nickel), Al (Aluminum) and Mn (manganese) to produce active cathode materials for new batteries. The solution includes compounds of desirable materials such as cobalt, nickel, aluminum and manganese dissolved as compounds from the exhausted cathode material of spent cells. Depending on a desired proportion, or ratio, of the desired materials, raw materials are added to the solution to achieve the desired ratio of the commingled compounds for the recycled cathode material for new cells. The desired materials precipitate out of solution without extensive heating or separation of the desired materials into individual compounds or elements. The resulting active cathode material has the predetermined ratio for use in new cells, and avoids high heat typically required to separate the useful elements because the desired materials remain commingled in solution.
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