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公开(公告)号：US20240344169A1
公开(公告)日：2024-10-17
申请号：US18579129
申请日：2022-07-14
摘要： To provide a metal recovery method that has a low environmental impact and that can achieve metal recovery at low cost and with high efficiency. A metal recovery method including: mixing a liquid containing a metal ion with a yeast to adsorb the metal ion by the yeast in the resulting mixed liquid; separating the yeast from the mixed liquid obtained in the adsorption process; and recovering the metal ion from the yeast separated in the separation process, wherein the metal ion to be adsorbed by the yeast in the adsorption process is a rare earth ion and/or a precious metal ion.
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公开(公告)号：US20240318282A1
公开(公告)日：2024-09-26
申请号：US18579520
申请日：2022-07-14
发明人： Hiroshi Takenouchi , Shin-ichi Heguri , Satoshi Asano , Hirofumi Shouji , Itsumi Matsuoka , Shota Sanjo , Takumi Matsugi
CPC分类号： C22B23/043 , C22B3/22 , C22B3/44 , C22B7/007 , C22B23/0461 , H01M10/54
摘要： The present invention provides a method that is capable of selectively obtaining nickel and/or cobalt from an alloy, which contains copper. A method comprises: a leaching step S1 in which an alloy that contains copper as well as nickel and/or cobalt is subjected to a leaching treatment by means of an acid solution in the coexistence of a sulfurizing agent, thereby obtaining a leachate and a leaching residue; and a reduction step S2 in which a reducing agent is added to the thus-obtained leachate so as to reduce the leachate, thereby obtaining a post-reduction solution and a reduction residue. This method is characterized in that the reduction is carried out in the reduction step S2, while controlling the addition amount of the reducing agent so that the redox potential of the leachate is 0 mV or less as determined where a silver/silver chloride electrode is the reference electrode.
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公开(公告)号：US20240287645A1
公开(公告)日：2024-08-29
申请号：US18113312
申请日：2023-02-23
发明人： Yadong Liu , Haixia Deng , Eric Gratz , Dhiren Mistry , Anil Parmar
摘要： A recycling process for Lithium-ion (Li-ion) batteries includes a selective leach of charge material metals followed by impurity control for effecting microstructures such as a pore volume and surface area for optimal structures and charge performance. Particle characteristics having a favorable effect on performance correlate with soluble impurities in a recycling leach solution formed from spent charge material in a battery recycling stream. Spent batteries yield a black mass of agitated, comingled cathode material, anode material and current collectors. Leaching of the black mass yields a recycling solution of charge material metals and impurities. Selective adjustment of these impurities through adding and/or separating soluble ions in the solution drives formation of internal voids, surface area and pore volume in the resulting cathode material.
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4.发明公开公开(公告)号：US20240283045A1
公开(公告)日：2024-08-22
申请号：US18570233
申请日：2022-06-21
发明人： Juliane Meese-Marktscheffel , Armin Olbrich , Alexander Wolff , Alexander Egeberg , Tino Saeuberlich , Alexander Zeugner
CPC分类号： H01M10/54 , C22B1/005 , C22B3/22 , C22B7/001 , C22B7/002 , C22B7/008 , C22B23/021 , C22B23/0446 , C22B26/12 , C22B47/00
摘要： The present invention relates to a process for recycling battery materials, in particular lithium ion/polymer batteries, and to the subsequent use of the useful materials recovered by way of the process according to the invention.
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公开(公告)号：US20240263273A1
公开(公告)日：2024-08-08
申请号：US18548723
申请日：2022-03-02
CPC分类号： C22B23/0461 , C01G53/44 , C22B3/22 , C22B3/42 , C22B7/007 , C22B23/0415 , C22B47/00 , H01M10/54 , C01P2002/50 , C01P2006/40 , C01P2006/80
摘要： The present invention relates, inter alia, to a method of producing a co-precipitate comprising nickel, manganese and/or cobalt, and to a co-precipitate produced by the method. The method may be a method of producing a co-precipitate comprising at least two metals selected from nickel, cobalt and manganese, and comprise: (i) providing an aqueous feed solution comprising said at least two metals and at least one impurity; and (ii) adjusting the pH of the feed solution to between about 6.2 and about 11, so as to provide: (a) a co-precipitate comprising said at least two metals; and (b) a supernatant comprising said at least one impurity.
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公开(公告)号：US20240222733A1
公开(公告)日：2024-07-04
申请号：US18392375
申请日：2023-12-21
摘要： According to the present invention there is provided a method for the extraction of one or more valuable metals, preferably Li, Co, Mn and/or Ni, from black mass end-of-life battery waste, the method comprising the steps of: obtaining the black mass having a content of the one or more valuable metals; subjecting the black mass to a hydrothermal extraction medium defined by a molar excess of molten elemental sulfur, a predetermined amount of water, a first predetermined temperature and a first predetermined heated pressure, over a first predetermined period to provide a sulfur/metal roasted material; and converting the sulfur/metal roasted material to its respective metal sulfate/s by subjecting the sulfur/metal roasted material to an extraction medium defined by an excess of water, a flow of air, at a second predetermined temperature, at a second predetermined heated pressure over a second predetermined period.
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公开(公告)号：US12018347B2
公开(公告)日：2024-06-25
申请号：US17602808
申请日：2021-05-12
发明人： Amit Patwardhan , Teague Egan
IPC分类号： C22B3/02 , B01D1/00 , B01D61/24 , B01D61/46 , C01D15/04 , C01D15/06 , C02F1/14 , C22B3/00 , C22B3/22 , C22B3/42 , C22B3/44 , C22B26/12 , C25C1/02 , C02F101/10
CPC分类号： C22B26/12 , B01D1/0035 , B01D61/243 , B01D61/46 , C01D15/04 , C01D15/06 , C02F1/14 , C22B3/00 , C22B3/22 , C22B3/42 , C22B3/44 , C25C1/02 , C02F2101/10
摘要： Systems and methods using solar evaporation to preconcentrate lithium containing brines to at or near lithium saturation, followed by a separation processes to separate lithium from impurities. A separated impurity stream is recycled to a point in the evaporation sequence where conditions are favorable for their precipitation and removal or disposed in a separate evaporation pond or reinjected underground, while a lower impurity stream is transferred to one or more of the removal location, to a subsequent pond in the sequence, or to a lithium plant or concentration facility. Further concentration of lithium by evaporation can then take place because impurities are removed thus eliminating lithium losses due to co-precipitation and achieving significantly higher concentrations of lithium.
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公开(公告)号：US20240191323A1
公开(公告)日：2024-06-13
申请号：US18210646
申请日：2023-06-15
申请人： Nanjing University
发明人： Zhan QU , Xianze WANG , Hongqiang REN , Jinfeng WANG , Junzhen LIU , Yusen CHEN
CPC分类号： C22B11/046 , B22F9/04 , B22F9/24 , C01G3/02 , C22B1/005 , C22B3/22 , C22B3/44 , C22B7/007 , B22F2301/255
摘要： A method for recycling silver from a waste IC chip include: heating to disassemble an IC chip, and crushing the IC chip into powders; adding the powders to a nitric acid solution, heating, centrifuging and collecting a first filtrate; adding soluble starch to the first filtrate, where a mass concentration ratio of the soluble starch to Fe in the first filtrate is 5.20-7.30; heating a resulting mixture to 130-175° C. for a first hydrothermal reaction, separating a precipitate from the first hydrothermal reaction and collecting a second filtrate; heating the second filtrate to 160-230° C. for a second hydrothermal reaction, separating a solid from the second hydrothermal reaction and collecting a third filtrate; drying, grinding, and sieving the solid to obtain silver powders; and adding alkali to the third filtrate to form a precipitate of Cu, and separating the precipitate to yield copper hydroxide.
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公开(公告)号：US12000013B2
公开(公告)日：2024-06-04
申请号：US17262449
申请日：2019-07-24
摘要： The disclosure relates to processes for extracting lithium from an uncalcined lithium-bearing silicate and recovering a lithium salt therefrom. A slurry of the uncalcined lithium-bearing silicate and a caustic solution is heated in an autoclave to provide a Li-rich sodalite phase. The Li-rich sodalite phase is leached with a dilute acid to produce a lithium-rich pregnant liquor. Various subsequent processes to treat the lithium-rich pregnant liquor to recover a lithium salt, such as lithium phosphate, lithium carbonate, lithium sulphate or lithium hydroxide, are described.
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公开(公告)号：US11965226B2
公开(公告)日：2024-04-23
申请号：US17967646
申请日：2022-10-17
发明人： Jeng-Kuei Chang , Si-Hao Chen
CPC分类号： C22B3/22 , B22F9/04 , C22B26/12 , B22F2009/045
摘要： The present invention relates to a lithium metal powder, a preparing method thereof, and an electrode including the same, wherein the method for preparing the lithium metal powder includes: providing a lithium metal material and a ultrasonication solution; mixing the lithium metal material and the ultrasonication solution to form a mixed solution; and ultrasonically vibrating the mixed solution to form a lithium metal powder, wherein the lithium metal powder is covered by a protective layer, and the aforementioned protective layer includes a protective layer material, wherein the protective layer material includes a sulfide, fluoride, or nitride, or a combination thereof.
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