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公开(公告)号：US20240011125A1
公开(公告)日：2024-01-11
申请号：US18218960
申请日：2023-07-06
发明人： Eric Van Abel , Charles Shackett
摘要： A method including sublimating or distilling an ytterbium composition from an initial solid composition comprising ytterbium and lutetium in an inert or reduced pressure environment and at a first average temperature for a first sublimation/distillation period to leave a lutetium composition comprising a higher weight percentage of lutetium than was present in the initial solid composition, collecting the ytterbium composition; retaining the ytterbium composition for a waiting period to form a decayed ytterbium composition, wherein the waiting period is longer than the first sublimation/distillation period; and subsequent to the waiting period, sublimating or distilling a refined ytterbium composition from the decayed ytterbium composition in an inert or reduced pressure environment and at a second average temperature for a second sublimation/distillation period to leave a waste composition.
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公开(公告)号：US11834729B2
公开(公告)日：2023-12-05
申请号：US18060378
申请日：2022-11-30
发明人： Jianxi Zhu , Hongping He , Gaofeng Wang , Yuanyuan Wang , Mingqi Sun , Liuqing He , Xiaoliang Liang , Jingming Wei , Qingze Chen , Runliang Zhu
摘要： A method for extracting rare earth elements (REEs) from a REE hyperaccumulator, including: subjecting the REE hyperaccumulator to microwave-assisted digestion to obtain a REE extract; subjecting the REE extract to absorption with a chelating resin and elution to obtain a purified REE solution; and subjecting the purified REE solution to precipitation and calcination to obtain high-purity rare earth compound.
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公开(公告)号：US20230383377A1
公开(公告)日：2023-11-30
申请号：US17804337
申请日：2022-05-27
申请人： II-VI Delaware, Inc.
发明人： Ghazaleh NAZARI , Gomer Abrenica
CPC分类号： C22B3/26 , C22B26/12 , C22B23/0453
摘要： Valuable metal compounds and a useful by-product are recovered, with high yield, from lithium-ion battery waste, without otherwise generating effluent. One or more metal sulfate solution may be used to scrub the metals from organic extractants. The sulfates may be produced in one or more evaporation/crystallization units downstream from precipitation and dissolution units. An organic extractant may be used to extract a metal of interest and other metals from feed material, scrub the other metals from the organic extractant, strip the metal of interest from the organic extractant, and recycle the extractant. An evaporation/crystallization unit may be used to output the metal of interest, while a return line transports a metal sulfate mother liquor from the evaporation/crystallization unit (after hydroxide precipitation and dissolution for purification) for use in scrubbing the other metals from the organic extractant after pH and metal concentration adjustment.
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公开(公告)号：US11814698B2
公开(公告)日：2023-11-14
申请号：US17810138
申请日：2022-06-30
申请人： EXCIR WORKS CORP.
发明人： Stephen Foley , Hiwa Salimi , Loghman Moradi
IPC分类号： C22B11/00 , C22B3/16 , C22B3/06 , C22B3/26 , C22B3/28 , C22B3/34 , C22B3/36 , C22B3/40 , C22B3/44 , C07C335/26 , C07D207/06 , C07D211/16 , C07D295/215 , C22B1/00 , C25C1/20 , C25C7/06
CPC分类号： C22B11/04 , C07C335/26 , C07D207/06 , C07D211/16 , C07D295/215 , C22B1/00 , C22B3/06 , C22B3/16 , C22B3/1608 , C22B3/1616 , C22B3/1625 , C22B3/1666 , C22B3/26 , C22B3/28 , C22B3/282 , C22B3/284 , C22B3/34 , C22B3/36 , C22B3/406 , C22B3/44 , C25C1/20 , C25C7/06 , Y02P10/20
摘要： The present application relates to methods for the simultaneous leaching and extraction of precious metals. For example, the present application relates to methods of leaching and extracting gold and/or palladium from a substance comprising gold and/or palladium such as a gold and/or palladium-containing ore in one step using a compound of Formula I: (I).
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公开(公告)号：US20230175097A1
公开(公告)日：2023-06-08
申请号：US17995656
申请日：2021-04-28
发明人： Jonathan EDGAR , Daniel MARIN FLORIDO , David FOXWELL , Paul Noel O'SHAUGHNESSY , Andreas TSOLIGKAS
CPC分类号： C22B11/046 , B01D15/265 , B01D15/166 , C22B3/24 , C22B3/26 , C22B3/42
摘要： A method for separating at least two metals from each other in a metal refining process, the method comprising: injecting a feed solution comprising the metals into a column or flow pipe comprising a monolithic solid body having a plurality of channels; and flowing the feed solution through the plurality of channels in the monolithic solid body to separate the metals.
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6.发明申请公开(公告)号：US20220372592A1
公开(公告)日：2022-11-24
申请号：US17773593
申请日：2020-10-29
发明人： Tao Qi , Zhaowu Zhu , Jian Zhang , Daoyong Lin
摘要： The present disclosure relates to a method for lithium recovery by extraction-stripping separation and purification, including: (1) performing an extraction on a lithium-containing solution using an extraction system including a composite extractant at a pH in a range of 10-13 and separating to obtain a lithium-loaded organic phase; (2) subjecting the lithium-loaded organic phase obtained in step (1) to a gas-liquid-liquid three-phase stripping to obtain a lithium-loaded stripping solution; and (3) subjecting the stripping solution obtained in step (2) to a thermal treatment and separating to obtain a lithium product and a separated mother liquor.
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7.发明授权公开(公告)号：US11479833B2
公开(公告)日：2022-10-25
申请号：US16625557
申请日：2018-06-28
申请人： COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES , Orano Cycle , ELECTRICITE DE FRANCE
发明人： Cécile Marie , Clémence Berger , Guillaume Mossand , Emilie Russello , Eugen Andreiadis , Dominique Guillaumont , Manuel Miguirditchian , Christian Sorel
摘要： The use of carbamides as extractants for fully or partially separating uranium(VI) from plutonium(IV) in an aqueous solution obtained by dissolving a spent nuclear fuel in nitric acid, by method of liquid-liquid extraction, without carrying out any reduction of the plutonium(IV) to plutonium(III). The invention also relates to new carbamides. Uses are the processing of spent nuclear fuels based on uranium (especially uranium oxides—UOX) or uranium and plutonium (especially mixed uranium and plutonium oxides—MOX).
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公开(公告)号：US20220135416A1
公开(公告)日：2022-05-05
申请号：US17577065
申请日：2022-01-17
申请人： XIANGTAN UNIVERSITY
发明人： Lixin Yang , Qinyao Zhou , Qianling Xie , Cong Li , Chang Liu , Haibo Li
摘要： The extraction system contains secondary amides and alkyl alcohols which are separately used as the extractants for extracting lithium and boron and consist of a single compound or a mixture of two or more compounds, and the total number of carbon atoms in their molecules are 12˜18 and 8˜20 respectively; the extraction system has a freezing point less than 0° C. With a volume ratio of an organic phase and a brine phase being 1˜10:1, at a brine density of 1.25˜1.38 g/cm3, at a brine pH value of 0˜7 and at a temperature of 0˜50° C., a single-stage or multi-stage countercurrent extraction and a stripping are conducted to obtain a water phase with a low magnesium-lithium ratio, which is subjected to concentration, impurity removal and preparation to get lithium chloride, lithium carbonate, lithium hydroxide and boric acid respectively. Water is used for stripping, greatly reducing the consumption of acid and base.
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公开(公告)号：US20220118379A1
公开(公告)日：2022-04-21
申请号：US17266383
申请日：2019-08-06
发明人： Fedor ZHURAVLEV , Kristina Søborg PEDERSEN , Jesper FONSLET , Joseph Michael IMBROGNO , Andrea ADAMO , Klavs F. JENSEN
IPC分类号： B01D11/04 , C01G9/00 , C01F17/17 , C01G53/00 , A61K51/04 , C22B3/26 , C22B15/00 , C22B34/14 , C22B34/12 , C22B58/00 , B01D61/14 , B01D61/16 , B01D61/18 , G21G1/00
摘要： Method of separation of a radiometal ion from a target metal ion, comprising a first liquid-liquid extraction step in which an organic phase comprising an extractant and an interfacial tension modifier is mixed with an aqueous phase comprising the radiometal ion and the target metal ion in order that the radiometal ion is at least partially transferred to the organic phase, followed by a first phase separation step, wherein the phase separation is carried out in flow comprising the use of a microfiltration membrane to separate the phases based on the interfacial tension between the phases such that a permeate phase passes through the membrane and a retentate phase does not.
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公开(公告)号：US20210395858A1
公开(公告)日：2021-12-23
申请号：US17281740
申请日：2019-10-02
发明人： Angela SERPE , Eros PERRA , Americo RIGOLDI
摘要： The present invention relates to a method for the recovery of palladium from an aqueous solution, comprising the steps of: (A) providing a dispersion comprising an aqueous dispersing phase comprising palladium(II), at least one non-ionic surfactant and at least one compound bearing a beta-dithiocarbonyl group, so as to form a hydrophobic complex of palladium(II) with the compound bearing a beta-dithiocarbonyl group; (B) heating the dispersion resulting from step (A) to a temperature at least equal to its cloud point so as to obtain the phase separation between the aqueous dispersing phase and a dispersed phase rich in surfactant comprising at least a part of said hydrophobic complex; (C) separating the dispersed phase rich in surfactant from the aqueous dispersing phase resulting from step (B); and (D) recovering the hydrophobic complex of palladium(II) with the compound bearing a beta-dithiocarbonyl group.
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