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公开(公告)号：US12084743B1
公开(公告)日：2024-09-10
申请号：US17201729
申请日：2021-03-15
CPC分类号： C22B3/14 , C22B3/20 , C22B59/00 , C22B60/0252 , C22B60/0291 , C22B60/0295
摘要： Disclosed herein are embodiments of methods for isolating rare earth elements (REEs) and radioisotopes from coal combustion products, such as fly ash. In particular embodiments, lanthanides, Al, Sc, Y, or compounds comprising lanthanides, AI, Sc, Y, or any combination thereof; or actinides can be isolated using the methods disclosed herein.
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公开(公告)号：US20240035119A1
公开(公告)日：2024-02-01
申请号：US17876517
申请日：2022-07-28
申请人： X-ENERGY, LLC
发明人： Alex Tilton , Nicholas Linneen
CPC分类号： C22B60/0247 , C22B3/14 , C22B3/44 , C22B3/22 , C22B60/0278 , C22B60/0286
摘要： A useful metal may be recovered from a solution of a nitrate salt of a metal cation or a metal oxycation, by adding the solution of the nitrate salt to a formation column having an inlet and an outlet nozzle, the solution of the nitrate salt being added in a dropwise fashion through the inlet. The formation column contains a recirculating solution containing a base selected from the group consisting of ammonia, ammonium hydroxide, an alkali metal hydroxide, and an alkaline earth metal hydroxide. The nitrate salt reacts with the base in the recirculating solution to produce a metal oxide salt or a metal hydroxide salt as a precipitate. The precipitate and the recirculating solution exit the formation column through the outlet nozzle and are captured the precipitate in a basket beneath the formation column while recovering the recirculating solution in a catch tank under the basket. The recovered recirculating solution is pumped from the catch tank to the formation column. The nitrate salt of the metal cation may be a nitrate salt of a radioactive metal cation, e.g., uranium or a uranyl cation.
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公开(公告)号：US11773467B2
公开(公告)日：2023-10-03
申请号：US16663964
申请日：2019-10-25
发明人： Jianwen Tang , Guoshan Du , Pengfei Xian , Shuang Qiu , Wenlong Zhou , Bo Qin
CPC分类号： C22B59/00 , C22B1/06 , C22B3/08 , C22B3/22 , C22B60/0291
摘要： Provided are a method and a system for processing a rare earth concentrate ore. The method comprises (1) mixing the rare earth concentrate ore and concentrated sulfuric acid, thereby obtaining a mixed slurry and a first fluorine-containing gas; (2) mixing the mixed slurry and an initiator liquid for acidolysis, thereby obtaining a clinker and a second fluorine-containing gas; (3) subjecting the clinker to leaching with water, thereby obtaining a leached slurry; (4) subjecting the leached slurry to a solid-liquid separation, thereby obtaining a filtrate and a leached slag, and recycling the leached slag to step (2) for acidolysis again.
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公开(公告)号：US20220401856A1
公开(公告)日：2022-12-22
申请号：US17843542
申请日：2022-06-17
IPC分类号： B01D15/38 , C07D273/00 , C07D471/08 , C22B3/22 , C22B59/00 , C22B60/02
摘要： The present invention relates to use of a chelating compound for chromatographic separation of rare earth elements, actinides, and/or s-, p- and d-block metals, and to a method of chromatographic separation of chelates of rare earth elements, actinides and/or s-, p- and d-block metals from a mixture of at least two metal ions. The method is characterized in that it comprises the following steps: (a) providing a mixture of at least two different metal ions chosen from rare earth metal ions, actinide ions and/or s-, p- and d-block metal ions, (b) contacting metal ions comprised in said mixture to with at least one compound of general formula (I) as defined in any one of the preceding claims to form chelates; (c) subjecting the chelates from step (b) to chromatographic separation, wherein optionally at least one separated metal chelate obtained in step (c) can be subjected to at least one further chromatographic separation in order to increase the purity of the at least one separated metal chelate; and, optionally, (d) obtaining the metal from the at least one separated metal chelate.
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公开(公告)号：US11293110B2
公开(公告)日：2022-04-05
申请号：US17433682
申请日：2020-12-15
摘要： A method for extracting uranium with a coupling device of wind power generation and uranium extraction from seawater includes the following steps: adding oxygen vacancy (OV)-containing In2O3-x to absolute ethanol, and subjecting a resulting mixture to stirring and ultrasonic treatment to obtain a solution of In2O3-x in absolute ethanol; coating the solution uniformly on carbon cloth, and drying to obtain carbon cloth coated with OV-containing In2O3-x; inserting the coated carbon cloth (as a working electrode) and another blank carbon cloth (as a counter electrode) into a plastic carrier of a coupling device; fixing a small wind power generation apparatus above the plastic carrier, and connecting the working electrode and the counter electrode to a storage battery of the apparatus via wires; and placing the coupling device in seawater, and after the storage battery is charged, energizing the working electrode and the counter electrode to extract uranium from the seawater.
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公开(公告)号：US20220068516A1
公开(公告)日：2022-03-03
申请号：US17524036
申请日：2021-11-11
申请人： Youngmoon Bae , Hyundong Shin , Seungchul Yang , Bohyun Jo , Byungkuk Lee , Dongyong Kwak , Hyunkwang Cho , Sunghoi Gu , Euijun Hwang
发明人： Youngmoon Bae , Hyundong Shin , Seungchul Yang , Bohyun Jo , Byungkuk Lee , Dongyong Kwak , Hyunkwang Cho , Sunghoi Gu , Euijun Hwang
IPC分类号： G21F9/08 , B01D35/02 , G01T1/167 , G21F9/10 , C02F1/58 , C22B60/02 , C02F9/00 , C02F1/04 , C02F1/52 , G21F9/12
摘要： Disclosed are a method and a device for recovering uranium (U) using a process for chemically treating washing wastewater of a uranium hexafluoride (UF6) cylinder. The method and the device are provided to separate uranium (U) from the wastewater released during a process of washing the uranium hexafluoride (UF6) cylinder and to release a filtrate that satisfies atomic energy licensing standards and environmental regulation standards using evaporation and condensation. Accordingly, an independent technology and process for treating the wastewater released during the process of washing the uranium hexafluoride (UF6) cylinder are ensured, which provides easier maintenance and greatly reduces costs compared to the purchase and operation of apparatuses manufactured by foreign makers.
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公开(公告)号：US20210354993A1
公开(公告)日：2021-11-18
申请号：US16877156
申请日：2020-05-18
发明人： John L. LYONS , Edward J. LAHODA , Michael R. ICKES , Daniel C. FLAHIVE , Frank C. GIFT, JR. , William F. LENZKE
IPC分类号： C01F17/13 , C01F15/00 , B01J39/07 , B01J39/18 , B01J47/00 , C22B60/02 , B01D15/36 , B01D21/01
摘要： Methods and systems for separation of thorium from uranium and their decay products are provided. The method comprises combining a nuclear fuel feedstock comprising thorium and uranium with a first acid to form a first solution. The first solution is contacted an ion exchange resin that is selective for thorium or uranium. The thorium or uranium is at least partially removed from the first solution by binding the thorium or uranium to the ion exchange resin thereby forming a second solution. The second solution is combined with oxalic acid to precipitate uranium or thorium from the second solution to form a precipitate. The precipitate is separated from the second solution.
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公开(公告)号：US11111559B2
公开(公告)日：2021-09-07
申请号：US16553825
申请日：2019-08-28
申请人： Ethox Chemicals, LLC
摘要： A solution for leaching metals from clay containing ore and a method of leaching ore is described. The solution comprises a cyanide; a wetting agent; and a clay stabilizing polymer.
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公开(公告)号：US20210130929A1
公开(公告)日：2021-05-06
申请号：US16636660
申请日：2018-08-07
申请人： Université de Montpellier , CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE , ENSCM - ECOLE NATIONALE SUPERIEURE DE CHIMIE
发明人： Donatien GOMES RODRIGUES , Sophie MONGE-DARCOS , Catherine FAUR , Nicolas DACHEUX , Stéphane PELLET-ROSTAING , Denis BOUYER
摘要： The invention pertains to a method for separating uranium and/or thorium from an aqueous suspension, said method comprising: a) Contacting said suspension with at least a polymer having formula (I), wherein n is an integer which is not 0 and is no more than 50, R1 is H or CH3, R2 is H or a C1-C20-alkyl, R3 and R4 arc independently H or a C1-C20-alkyl, X, Y arc O or NH, said polymer being soluble in said aqueous suspension, and wherein when R3 and R4 are H, p is an integer which is 1 or more and 10 at the most, and said polymer is a flocculating polymer, and when at least one of R3 and R4 is not H, p is an integer which is 3 or more and 10 at the most, and said polymer is a thermosensitive polymer and has a LCST in said suspension, b) Carrying out at least one of the following steps b1) and b2) b1) If said suspension contains uranium, separating the aggregates resulting from flocculation of said polymer, from said mixture, b2) If said suspension contains thorium, modifying the mixture until the LCST of the polymer in the mixture is reached or exceeded and separating the resulting aggregates from said mixture; and c) Recovering at least one of uranium and/or thorium-free mixture, aggregates bearing uranium and aggregates bearing thorium.
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公开(公告)号：US10894999B2
公开(公告)日：2021-01-19
申请号：US15762743
申请日：2016-06-30
申请人： OUTOTEC (FINLAND) OY
摘要： In a process for producing uranium and/or at least one rare earth element selected from the group consisting of cerium, dysprosium, erbium, europium, gadolinium, holmium, lanthanum, lutetium, neodymium, praseodymium, promethium, samarium, scandium, terbium, thulium, ytterbium and yttrium out of an ore, the ore is mixed with sulphuric acid with a concentration of at least 95 wt.-% to a mixture, wherein the mixture is granulated to pellets. The pellets are fed into at least one fluidized bed fluidized by a fluidizing gas for a thermal treatment at temperatures between 200 and 1000° C. The at least one fluidized bed is developed such that it at least partly surrounds a gas supply tube for a gas or a gas mixture fed into the reactor and the gas or gas mixture is used as a heat transfer medium.
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