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公开(公告)号：US10036082B2
公开(公告)日：2018-07-31
申请号：US15544079
申请日：2015-09-28
Inventor： Masahiro Goto , Fukiko Kubota , Yuzo Baba
IPC: C22B34/00 , C22B34/14 , C07C237/06 , B01D11/04
CPC classification number: C22B34/14 , B01D11/0492 , C07C237/06 , C22B3/0005 , C22B3/0024 , Y02P10/234
Abstract: Provided are: an extractant which is capable of quickly and highly efficiently extracting zirconium from an acidic solution that is obtained by acid leaching a material containing zirconium and scandium such as an SOFC electrode material; and a method for extracting zirconium, which uses this extractant. A zirconium extractant according to the present invention is composed of an amide derivative represented by general formula (I). In the formula, R1 and R2 respectively represent the same or different alkyl groups, each of which may be linear or branched; R3 represents a hydrogen atom or an alkyl group; and R4 represents a hydrogen atom or an arbitrary group other than an amino group, said arbitrary group being bonded, as an amino acid, to the α carbon.
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公开(公告)号：US09982326B2
公开(公告)日：2018-05-29
申请号：US14976421
申请日：2015-12-21
Applicant: Scandium International Mining Corporation
Inventor： Willem P. C. Duyvesteyn
CPC classification number: C22B59/00 , C22B3/0005 , C22B3/20 , Y02P10/234
Abstract: A method for isolating scandium values is provided. The method includes extracting scandium values from a leachate with an organic solvent, thereby obtaining a scandium-loaded organic solvent, wherein the leachate contains iron and scandium ions, and wherein the organic solvent contains a primary amine. The scandium values are then stripped from the scandium-loaded solvent with a stripping solution containing an acid and a salt.
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公开(公告)号：US20180112289A1
公开(公告)日：2018-04-26
申请号：US15568230
申请日：2016-04-21
Applicant: UNIVERSITY OF SASKATCHEWAN
Inventor： Stephen FOLEY , Hiwa SALIMI , Loghman MORADI
CPC classification number: C22B11/04 , C07C335/26 , C07D207/06 , C07D211/16 , C07D295/215 , C22B1/00 , C22B3/0005 , C22B3/06 , C22B3/16 , C22B3/44 , C25C1/20 , C25C7/06 , Y02P10/234
Abstract: The present application relates to methods for leaching and extraction of precious metals. For example, the present application relates to methods of leaching gold, palladium and/or platinum from a substance comprising gold, palladium and/or platinum (such as a gold-containing ore or a platinum group metal (PGM) concentrate) using an organic solvent that is water-miscible or partially water-miscible.
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公开(公告)号：US09920397B2
公开(公告)日：2018-03-20
申请号：US14408124
申请日：2013-06-21
Applicant: BHP Billiton SSM Development Pty Ltd
Inventor： Renato Antonio Loaiza Aguilar , Carolina Isabel Meneses Rodríguez , Ruben Rangel De Hoyos , Houyuan Liu
CPC classification number: C22B3/44 , B01D9/0036 , B01D9/0059 , C22B3/0005 , C22B3/42 , C22B23/0461 , Y02P10/234
Abstract: A process for the removal of ferric iron as hematite from a nickel solution containing ferric and ferrous ions including the steps of: raising the temperature of the nickel solution to between 90° C. and the boiling point of the solution at atmospheric pressure; raising the pH of the nickel solution to be between 2 and 3; and adding a hematite seed to facilitate hematite precipitation, wherein ferric ions are precipitated as hematite in a predominantly crystalline form.
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公开(公告)号：US09896742B2
公开(公告)日：2018-02-20
申请号：US14783848
申请日：2014-04-10
Inventor： Tao Qi , Lina Wang , Desheng Chen , Hongxin Zhao , Yahui Liu , Tianyan Xue , Jingkui Qu
IPC: C01G31/02 , C22B3/10 , C01G23/053 , C22B3/44 , C22B3/00 , C22B34/22 , C22B34/12 , C22B1/02 , C22B3/26 , B01J6/00 , C22B1/00 , C22B5/12 , C22B9/02
CPC classification number: C22B34/1245 , B01J6/001 , C01G23/053 , C01G23/0536 , C01G31/02 , C22B1/00 , C22B1/02 , C22B3/0005 , C22B3/10 , C22B3/44 , C22B5/12 , C22B9/023 , C22B34/1209 , C22B34/1259 , C22B34/22 , Y02P10/234
Abstract: A method for processing vanadium-titanium magnetite finished ores by using a wet process. The method comprises the steps: extracting vanadium from vanadium-titanium magnetite finished ores and processing, by using the vanadium extraction method, obtained leaching residue by using a wet process, so as to obtain titanium; and calcining the remaining liquid extracted during the vanadium extraction, so as to prepare ferric oxide. The flow of the method is short, and the energy consumption is low, thereby avoiding waste of a titanium resource.
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Patent Agency Ranking
公开(公告)号：US09822428B2
公开(公告)日：2017-11-21
申请号：US14848537
申请日：2015-09-09
Applicant: Shin-Etsu Chemical Co., Ltd.
Inventor： Hiroto Sugahara
CPC classification number: C22B59/00 , C22B3/0005 , C22B34/14 , Y02P10/234
Abstract: The inventive extraction/separation method involves the step of contacting an organic phase containing a dialkyldiglycol amic acid extractant: R1R2NCOCH2OCH2COOH with an aqueous solution containing scandium and zirconium and/or hafnium for thereby extracting zirconium and/or hafnium into the organic phase. The purity of scandium can be efficiently increased by the simple step of solvent extraction.
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公开(公告)号：US09822425B2
公开(公告)日：2017-11-21
申请号：US14607578
申请日：2015-01-28
Applicant: CYTEC TECHNOLOGY CORP.
Inventor： Troy Allan Bednarski , Violina Antoneta Cocalia , Matthew Dean Soderstrom , Eduardo Alberto Kamenetzky , Andrew Michael Cameron , Douglas Harris
CPC classification number: C22B3/1683 , C22B3/0005 , C22B34/34 , C22B60/0226 , Y02P10/234
Abstract: Provided herein are processes for recovering metal present at low concentration from an acidic aqueous solution, including contacting the acidic aqueous solution with an organic phase solution including one or more 5-(C8 to C14 alkyl)-2-hydroxyaryloxime, thereby extracting at least part of the metal from the acidic aqueous phase; increasing or maintaining the concentration of metal in the organic phase solution by recycling a portion of the organic phase solution containing the metal and contacting the organic phase with an acidic aqueous solution containing the metal; contacting the organic phase solution containing metal with an aqueous phase strip solution comprising an inorganic compound that back-extracts the metal, thereby stripping at least part of the metal from the organic phase solution to the aqueous phase strip solution; and separating the metal from the aqueous phase strip solution, thereby recovering the metal.
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公开(公告)号：US20170233849A1
公开(公告)日：2017-08-17
申请号：US15041332
申请日：2016-02-11
Applicant: BLOOM ENERGY CORPORATION
Inventor： Lunzhi LIAO , Christopher Jeffrey HARTLEY , Justin MCALLISTER , Andrew SARMIENTO
CPC classification number: C22B59/00 , C07C51/412 , C22B3/0005 , C22B3/0043 , C22B34/14 , Y02P10/234 , C07C55/07
Abstract: A method of selectively removing impurities from a scandium-containing feed solution includes contacting an aqueous scandium-containing solution with an organic solvent stream containing an extractant, thereby forming a loaded organic solvent stream containing the impurity or impurities while leaving the scandium in the raffinate. The aqueous stream containing the scandium is washed, diluted and has inorganic salts added before being contacted with a second organic solvent stream to extract the scandium selectively, and followed by stripping the scandium from the scandium-containing loaded organic extractant stream by adding oxalic acid to the loaded organic extractant stream to form scandium oxalate.
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公开(公告)号：US09725786B2
公开(公告)日：2017-08-08
申请号：US14650364
申请日：2013-09-06
Inventor： Masahiro Goto , Fukiko Kubota , Yuzo Baba
CPC classification number: C22B23/0484 , B01D11/0492 , C22B3/0005 , C22B3/44 , C22B7/006 , C22B23/0453 , C22B23/0461 , H01M10/54 , Y02P10/234 , Y02W30/84
Abstract: In the present invention, nickel is selectively extracted from an acidic solution that contains a high concentration of manganese. This valuable metal extraction agent is represented by the general formula. In the formula, R1 and R2 are alkyl groups that may be the same or different, R3 is a hydrogen atom or an alkyl group, and R4 is a hydrogen atom or any group, other than an amino group, bonded to an α carbon atom of an amino acid. The general formula preferably has a glycine unit, a histidine unit, a lysine unit, an aspartic acid unit or a n-methylglycine unit. When extracting nickel by using this extraction agent, it is preferable to adjust the pH of the acidic solution to 2.3 to 5.5 inclusive.
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公开(公告)号：US20160369417A1
公开(公告)日：2016-12-22
申请号：US15111987
申请日：2015-01-21
Applicant: OUTOTEC (FINLAND) OY
Inventor： Erkki PAATERO , Kari HIETALA , Mika HAAPALAINEN
CPC classification number: C25C1/12 , C22B3/0005 , C22B3/42 , C22B3/46 , C22B15/0063 , C22B15/0089 , C22B19/22 , C22B19/26 , Y02P10/234 , Y02P10/236
Abstract: The present invention provides a method of recovering copper and zinc from an aqueous sulfate and chloride containing solution. In the first process step zinc and copper are simultaneous extracting with an extraction solution comprising a liquid chelating cation exchanger and a liquid anion exchanger. The extraction is followed by consecutive stripping stages. First the anionic species are washed from the organic phase with one or more aqueous solutions and finally the copper is stripped with an aqueous acidic solution.
Abstract translation: 本发明提供了从含硫酸盐和含氯化物溶液中回收铜和锌的方法。 在第一步骤中，锌和铜同时用包含液体螯合阳离子交换剂和液体阴离子交换剂的萃取溶液萃取。 萃取之后是连续的汽提阶段。 首先，阴离子物质用有机相用一种或多种水溶液洗涤，最后用酸性水溶液汽提铜。
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