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公开(公告)号：US11214849B2
公开(公告)日：2022-01-04
申请号：US16077821
申请日：2017-02-21
发明人： Hidemasa Nagai , Keiji Kudo , Itsumi Matsuoka , Yoshitomo Ozaki , Hirofumi Shoji , Shin-ya Matsumoto , Tatsuya Higaki
摘要： A method for recovering scandium, by which scandium is able to be recovered from nickel oxide ore. The present invention comprises: a leaching step S1 for obtaining a leachate by leaching a nickel oxide ore containing scandium with use of sulfuric acid; a neutralization step by adding a neutralizing agent thereto; a sulfurization step by adding a sulfurizing agent to the post-neutralization solution; an ion exchange step by bringing the post-sulfurization solution into contact with a chelating resin; a dissolution step by obtaining a precipitate of scandium hydroxide by adding an alkali into the scandium eluent, and subsequently adding an acid solution to the scandium hydroxide; a solvent extraction step by bringing the scandium acid dissolution liquid into contact with a neutral extractant; and a scandium recovery step by adding oxalic acid to the extraction residue and subsequently roasting the salt of scandium oxalate.
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公开(公告)号：US11571634B2
公开(公告)日：2023-02-07
申请号：US16903622
申请日：2020-06-17
摘要： A new system in which a forward extraction part, a scrubbing part, and a backward extraction part operate together and synchronously to produce specific substances by extraction and separation in a liquid-liquid system. The aqueous phase is circulated independently only in the forward extraction part one or more times, and the organic phase is circulated from the forward extraction part through the scrubbing part and the backward extraction part to the forward extraction part again in synchronization with the liquid circulation of the aqueous phase.
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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：US20210254193A1
公开(公告)日：2021-08-19
申请号：US16077821
申请日：2017-02-21
发明人： Hidemasa Nagai , Keiji Kudo , Itsumi Matsuoka , Yoshitomo Ozaki , Hirofumi Shoji , Shin-ya Matsumoto , Tatsuya Higaki
摘要： A method for recovering scandium, by which scandium is able to be recovered from nickel oxide ore. The present invention comprises: a leaching step S1 for obtaining a leachate by leaching a nickel oxide ore containing scandium with use of sulfuric acid; a neutralization step by adding a neutralizing agent thereto; a sulfurization step by adding a sulfurizing agent to the post-neutralization solution; an ion exchange step by bringing the post-sulfurization solution into contact with a chelating resin; a dissolution step by obtaining a precipitate of scandium hydroxide by adding an alkali into the scandium eluent, and subsequently adding an acid solution to the scandium hydroxide; a solvent extraction step by bringing the scandium acid dissolution liquid into contact with a neutral extractant; and a scandium recovery step by adding oxalic acid to the extraction residue and subsequently roasting the salt of scandium oxalate.
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5.发明公开公开(公告)号：US20240076195A1
公开(公告)日：2024-03-07
申请号：US18501352
申请日：2023-11-03
发明人： Mostafa Khodakarami , Lana Alagha
IPC分类号： C01F17/17 , C07C211/63 , C07C229/12 , C07C235/06 , C22B3/28 , C22B59/00
CPC分类号： C01F17/17 , C07C211/63 , C07C229/12 , C07C235/06 , C22B3/288 , C22B59/00
摘要： The present disclosure is directed to novel functionalized ionic liquids (ILs) that are used, for example, for enhanced recovery and separation of rare earth elements from aqueous solutions. The liquids and processes disclosed herein lead to greater separation efficiency, increased stability of separation materials, increased selectivity, and a reduced amount of waste materials.
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公开(公告)号：US11761058B2
公开(公告)日：2023-09-19
申请号：US17864857
申请日：2022-07-14
发明人： Dongmei Li , Shuai Tan , Chenlin Li , Luke Williams
IPC分类号： C22B3/00 , C22B7/00 , C22B59/00 , C22B3/22 , D01D5/00 , D01F1/02 , D01F9/14 , C01F17/218 , C01F17/17 , D01F9/22
CPC分类号： C22B59/00 , C01F17/17 , C01F17/218 , C22B3/22 , D01D5/003 , D01F1/02 , D01F9/14 , D01F9/22 , Y02P10/20
摘要： In a first embodiment, a coal treatment process includes exposing a material comprising coal to ionic liquid(s) to form a first mixture, isolating a residue from the first mixture, forming a second mixture comprising the residue, and electrospinning the second mixture to form a carbon fiber precursor material. In a second embodiment, a coal treatment process includes exposing a material comprising coal to ionic liquid(s) to form a mixture comprising solids and a liquid fraction, separating and filtering the liquid fraction from the mixture, and isolating one or more compounds from the liquid fraction. In a third embodiment, a coal treatment process includes exposing a material comprising coal to ionic liquid(s) to form a first mixture comprising residues, exposing the first mixture to (a) an acid, (b) a solvent, or (c) both to form a second mixture, and isolating rare earth elements and rare earth element compounds.
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公开(公告)号：US20220212945A1
公开(公告)日：2022-07-07
申请号：US17595334
申请日：2020-05-15
发明人： Mostafa Khodakarami , Lana Alagha
IPC分类号： C01F17/17 , C07C211/63 , C07C235/06 , C07C229/12 , C22B59/00 , C22B3/28
摘要： The present disclosure is directed to novel functionalized ionic liquids (ILs) that are used, for example, for enhanced recovery and separation of rare earth elements from aqueous solutions. The liquids and processes disclosed herein lead to greater separation efficiency, increased stability of separation materials, increased selectivity, and a reduced amount of waste materials.
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公开(公告)号：US20200308016A1
公开(公告)日：2020-10-01
申请号：US16826622
申请日：2020-03-23
IPC分类号： C01F17/17 , C01F17/212 , C22B59/00 , C22B3/20
摘要： A method of separating scandium from a feedstock wherein a scandium enriched solution is produced from the feedstock and the scandium enriched solution is extracted to produce an organic phase of the scandium enriched solution. The organic phase of the scandium enriched solution is re-extracted to produce an aqueous phase including scandium chloride. The aqueous phase is precipitated and calcinated to produce scandium oxide powder.
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公开(公告)号：US11958754B2
公开(公告)日：2024-04-16
申请号：US17252257
申请日：2019-06-14
发明人： Peter Nockemann , Donnacha Brolly , Ena Bradley , Eadaoin Mccourt
IPC分类号： C01F17/17 , C01F17/271 , C07D233/61 , C07F9/54 , C22B3/26 , C22B3/28 , C22B59/00
CPC分类号： C01F17/17 , C01F17/271 , C07D233/61 , C07F9/5407 , C07F9/5442 , C22B3/26 , C22B3/28 , C22B59/00
摘要： A method for extracting a rare earth metal from a mixture of one or more rare earth metals, said method comprising contacting an acidic solution of the rare earth metal with a composition which comprises an ionic liquid to form an aqueous phase and a non-aqueous phase into which the rare earth metal has been selectively extracted, wherein the ionic liquid has the formula [Ca++][X′], where [X′] represents a phosphinate anion.
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公开(公告)号：US11807545B2
公开(公告)日：2023-11-07
申请号：US16826622
申请日：2020-03-23
IPC分类号： C01F17/00 , C01F17/17 , C22B3/20 , C22B59/00 , C01F17/212
CPC分类号： C01F17/17 , C01F17/212 , C22B3/20 , C22B59/00
摘要： A method of separating scandium from a feedstock wherein a scandium enriched solution is produced from the feedstock and the scandium enriched solution is extracted to produce an organic phase of the scandium enriched solution. The organic phase of the scandium enriched solution is re-extracted to produce an aqueous phase including scandium chloride. The aqueous phase is precipitated and calcinated to produce scandium oxide powder.
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