公开(公告)号：US20180187290A1

公开(公告)日：2018-07-05

申请号：US15738441

申请日：2016-06-29

Applicant: AREVA MINES

Inventor： Hamid Mokhtari ,  Bruno Courtaud ,  Frédéric Auger

IPC: C22B60/02

CPC classification number: C22B60/0278 ,  C22B60/0243 ,  C22B60/026 ,  C22B60/0282

Abstract: The application relates to a method for separating iron from an initial liquid organic phase containing uranium and iron, wherein the initial liquid organic phase is contacted with an aqueous solution referred to as aqueous de-ironing solution, whereby the iron passes into the aqueous solution to form a final liquid aqueous phase, and uranium remains in the initial liquid organic phase to form a final liquid organic phase referred to as de-ironed organic phase. The method is characterised in that the aqueous de-ironing solution contains an inorganic acid and uranium, and does not contain iron. The application also relates to a method for extracting uranium from an aqueous solution of an inorganic acid containing uranium and iron.

公开(公告)号：US09856570B2

公开(公告)日：2018-01-02

申请号：US15240383

申请日：2016-08-18

Applicant: FREEPORT MINERALS CORPORATION

Inventor： Anand Raman ,  Jason M Morgan ,  Barbara J Savage ,  David G Meadows ,  Wayne W Hazen

IPC: C22B19/00 ,  C22B3/02 ,  C25C1/22 ,  C25C1/08 ,  C25C7/00 ,  C25C1/00 ,  C22B3/26 ,  B01D11/04 ,  C22B3/44 ,  C22B3/00 ,  C22B34/34 ,  C22B59/00 ,  C22B60/02 ,  C22B61/00

CPC classification number: C25C1/22 ,  B01D11/0488 ,  C22B3/0005 ,  C22B3/02 ,  C22B3/44 ,  C22B11/04 ,  C22B19/00 ,  C22B23/0407 ,  C22B23/0453 ,  C22B23/0461 ,  C22B34/34 ,  C22B59/00 ,  C22B60/0221 ,  C22B60/0252 ,  C22B60/0278 ,  C22B61/00 ,  C25C1/00 ,  C25C1/08 ,  C25C1/10 ,  C25C7/00 ,  Y02P10/234

Abstract: The present disclosure relates to a process and system for recovery of one or more metal values using solution extraction techniques and to a system for metal value recovery. In an exemplary embodiment, the solution extraction system comprises a first solution extraction circuit and a second solution extraction circuit. A first metal-bearing solution is provided to the first and second circuit, and a second metal-bearing solution is provided to the first circuit. The first circuit produces a first rich electrolyte solution, which can be forwarded to primary metal value recovery, and a low-grade raffinate, which is forwarded to secondary metal value recovery. The second circuit produces a second rich electrolyte solution, which is also forwarded to primary metal value recovery. The first and second solution extraction circuits have independent organic phases and each circuit can operate independently of the other circuit.

公开(公告)号：US20120035332A1

公开(公告)日：2012-02-09

申请号：US13251106

申请日：2011-09-30

Applicant: Mamadou S. Diallo ,  Jean Frechet ,  Emine Boz

Inventor： Mamadou S. Diallo ,  Jean Frechet ,  Emine Boz

IPC: C08G73/10 ,  E21C37/00 ,  C08G73/04 ,  E21B43/28 ,  B82Y30/00

CPC classification number: C22B60/0278 ,  C08G73/028 ,  C22B60/026

Abstract: Methods and facilities are provided for extracting a metal, such as an actinide from a solid, such as an ore. A novel class of dendritic macromolecules is provided for use in such extraction having a core, a hyperbranched structure, and a plurality of units satisfying the formula —NR2(C═O)R1, in which R1 is not a continuation of the hyperbranched structure.

Abstract translation: 提供了用于从诸如矿石的固体中提取金属如锕系元素的方法和设备。 提供了一类新颖的树枝状大分子，用于具有核心，超支化结构和满足式-NR2（C = O）R1的多个单元的提取中，其中R1不是超支化结构的延续。

公开(公告)号：US06372872B1

公开(公告)日：2002-04-16

申请号：US09508308

申请日：2000-05-08

Applicant: Simon Nigel Port ,  Malcolm John Joyce ,  Paul Howard Walton ,  Gregory David Saunders

Inventor： Simon Nigel Port ,  Malcolm John Joyce ,  Paul Howard Walton ,  Gregory David Saunders

IPC: G08F2006

CPC classification number: C22B3/205 ,  C22B60/0278 ,  G21F9/04 ,  Y02P10/234

Abstract: A method for producing a system adapted to interact with a dissolved species, the method comprising providing a first component incorporating a complexing functionality, X, and a polymerizable functionality, R, the complexing functionality being capable of forming a complex with the dissolved species, and providing a second component polymerisable with the first component, the method involving contacting the first component with a species with which it complexes and subsequently contacting the complexed first component with the second component and polymerizing the two to produce a polymer incorporating the complexing functionality X, the method further comprising the removal of the complexed species from the functionality X, wherein the complexable functionality is selective from functionalities of the formula: ═CTCOOH, where T is hydrogen or any halogen (most preferably chlorine), methyl and halogen substituted forms thereof, or ≡CCOOH; or PhCOOH.

Abstract translation: 一种用于生产适于与溶解物质相互作用的系统的方法，所述方法包括提供包含络合官能度X和可聚合官能团的第一组分，R，能够与溶解物质形成络合物的络合官能团，以及 提供可与所述第一组分聚合的第二组分，所述方法包括使所述第一组分与其配合并随后使所述络合的第一组分与所述第二组分接触的物质接触，并聚合所述第二组分以产生结合所述络合官能度X的聚合物 方法还包括从官能度X除去络合的物质，其中所述可络合官能团可以由下式的官能团选择：= CTCOOH，其中T是氢或任何卤素（最优选氯），其甲基和卤素取代的形式，或 = CCOOH; 或PhCOOH。

公开(公告)号：US5356605A

公开(公告)日：1994-10-18

申请号：US967652

申请日：1992-10-28

Applicant: Zygmunt Tomczuk ,  William E. Miller

Inventor： Zygmunt Tomczuk ,  William E. Miller

IPC: C01G43/08 ,  C01G56/00 ,  C22B60/02

CPC classification number: C22B60/0278 ,  C01G43/08 ,  C01G56/006

Abstract: A process for converting PuO.sub.2 and UO.sub.2 present in an electrorefiner to the chlorides, by contacting the PuO.sub.2 and UO.sub.2 with Li metal in the presence of an alkali metal chloride salt substantially free of rare earth and actinide chlorides for a time and at a temperature sufficient to convert the UO.sub.2 and PuO.sub.2 to metals while converting Li metal to Li.sub.2 O. Li.sub.2 O is removed either by reducing with rare earth metals or by providing an oxygen electrode for transporting O.sub.2 out of the electrorefiner and a cathode, and thereafter applying an emf to the electrorefiner electrodes sufficient to cause the Li.sub.2 O to disassociate to O.sub.2 and Li metal but insufficient to decompose the alkali metal chloride salt. The U and Pu and excess lithium are then converted to chlorides by reaction with CdCl.sub.2.

Abstract translation: 通过使PuO 2和UO 2与Li金属在碱金属氯化物盐基本上不含稀土和锕系氯化物的存在下接触一段时间并在足以满足以下条件的温度的温度下将电解精炼机中存在的PuO 2和UO 2转化为氯化物的方法： 将UO2和PuO2转化为金属，同时将Li金属转化为Li2O。 通过用稀土金属还原或通过提供用于将氧气输出到电学纯化器和阴极的氧电极除去Li 2 O，然后将emf施加到足以引起Li 2 O分解为O 2和Li金属但不足的电学纯化器电极 以分解碱金属氯化物盐。 然后通过与CdCl 2反应将U和Pu和过量的锂转化成氯化物。

公开(公告)号：US4769180A

公开(公告)日：1988-09-06

申请号：US32588

申请日：1987-04-01

Applicant: Yoshiaki Echigo ,  Hirotaka Amimoto ,  Mutsunori Yamao ,  Tadashi Ishikura ,  Keiichiro Otomura ,  Sakae Fujisaki ,  Yoshikazu Ogura

Inventor： Yoshiaki Echigo ,  Hirotaka Amimoto ,  Mutsunori Yamao ,  Tadashi Ishikura ,  Keiichiro Otomura ,  Sakae Fujisaki ,  Yoshikazu Ogura

IPC: C01B7/19 ,  C01G43/00 ,  C01G43/06 ,  C22B60/02

CPC classification number: C22B60/0265 ,  C01B7/191 ,  C01G43/00 ,  C01G43/063 ,  C22B60/0278 ,  Y02P10/212

Abstract: A process for separately recovering uranium and hydrofluoric acid from a waste liquor containing uranium and fluorine comprises a neutralizing precipitation step wherein a magnesium compound is added to the waste liquor containing uranium and fluorine to form a precipitate and the thus formed precipitate is then separated; a distillation step wherein an aqueous solution of sulfuric acid is added to the precipitate separated in said neutralizing precipitation step to dissolve the precipitate and the thus formed solution is then distilled to recover hydrofluoric acid as a distillate; and a uranium recovery step wherein uranium is recovered from a residue produced by said distillation step.

Abstract translation: 从含有铀和氟的废液中分别回收铀和氢氟酸的方法包括中和沉淀步骤，其中将镁化合物加入到含有铀和氟的废液中以形成沉淀物，然后分离形成的沉淀物; 蒸馏步骤，其中将硫酸水溶液加入到在所述中和沉淀步骤中分离的沉淀物中以溶解沉淀物，然后蒸馏形成的溶液以回收作为馏出物的氢氟酸; 和铀回收步骤，其中从由所述蒸馏步骤产生的残余物中回收铀。

公开(公告)号：US4464345A

公开(公告)日：1984-08-07

申请号：US452164

申请日：1982-12-22

Applicant: Tsoung-Yuan Yan

Inventor： Tsoung-Yuan Yan

IPC: C01G43/00 ,  C22B60/02 ,  E21B43/28 ,  C01B33/113 ,  C01G39/00

CPC classification number: C22B60/0247 ,  C01G43/00 ,  C22B60/0265 ,  C22B60/0278 ,  E21B43/28

Abstract: The present invention relates to a process for recovery of uranium from a carbonate lixiviant additionally containing other contaminants such as molybdenum and silica, by adjusting the pH of the lixiviant to a value of at least 4 and treating the lixiviant to obtain a carbonate concentration of at least 50 ppm by weight. Subsequently the lixiviant is treated with an aqueous solution containing a sufficient amount of ferric iron to precipitate the contaminants without substantial precipitation with the uranium values. The precipitate is separated from the lixiviant. The treated lixiviant is passed through an ion exchange to retain uranium values.

Abstract translation: 本发明涉及从另外含有其它污染物如钼和二氧化硅的碳酸盐浸出物中回收铀的方法，通过将浸渍剂的pH调节至至少4的值，并处理浸取剂以获得碳酸盐浓度为 至少50ppm重量。 随后，用含有足够量的三价铁的水溶液处理浸渍剂以沉淀污染物，而不会以铀值显着沉淀。 将沉淀物与浸出物分离。 经过处理的浸泡剂通过离子交换以保留铀值。

公开(公告)号：US4406864A

公开(公告)日：1983-09-27

申请号：US192767

申请日：1980-10-01

Applicant: Donald R. Weir ,  Ian M. Masters ,  Roman M. Genik-Sas-Berezowsky

Inventor： Donald R. Weir ,  Ian M. Masters ,  Roman M. Genik-Sas-Berezowsky

IPC: C01G28/00 ,  C01G53/11 ,  C22B60/02 ,  C01G43/01

CPC classification number: C22B60/0278 ,  C01G28/008 ,  C01G53/11 ,  C22B60/0234 ,  C22B60/026

Abstract: A process for the recovery of uranium values from uranium-containing material which also contains iron, arsenic and siliceous matter, includes leaching the uranium-containing material in aqueous sulphuric acid solution under conditions to provide dissolved iron present in the resultant leach solution as predominantly ferrous iron rather than ferric iron and/or to provide a sulphuric acid concentration in the leach solution sufficiently high to substantially prevent the precipitation of arsenates. Uranium values are recovered from the leach solution by solvent extraction agent which has little affinity for arsenic.

Abstract translation: 还含有铁，砷和硅质物质的含铀材料回收铀值的过程包括在含硫的硫酸溶液中浸出含铀材料，以提供存在于主要为亚铁的所得浸出溶液中的溶解铁 铁而不是三价铁和/或提供浸出溶液中的硫酸浓度足够高以基本上防止砷酸盐的沉淀。 通过对砷具有很小亲和力的溶剂萃取剂从浸出溶液中回收铀值。

公开(公告)号：US4302428A

公开(公告)日：1981-11-24

申请号：US95188

申请日：1979-11-16

Applicant: James M. Paul

Inventor： James M. Paul

IPC: C01B15/047 ,  C01G43/01 ,  C22B60/02

CPC classification number: C01B15/0475 ,  C01G43/01 ,  C22B60/0278

Abstract: A process for the recovery of uranium by precipitation from a rich eluate by contacting the eluate with hydrogen peroxide to produce uranium peroxide yellowcake and reacting the yellowcake with a reducing agent to produce uranium trioxide. The reaction between the yellowcake and the reducing agent may be carried out at a temperature less than 100.degree. C. Subsequent to the reducing step, the uranium trioxide may be washed with water in order to remove water soluble salts present as impurities. Thereafter, the uranium trioxide is dried at a temperature less than 200.degree. C.

Abstract translation: 通过使洗脱液与过氧化氢接触以产生铀过氧化物黄饼并使黄饼与还原剂反应以产生三氧化铀来从富集的洗脱液中沉淀回收铀的方法。 黄饼和还原剂之间的反应可以在低于100℃的温度下进行。在还原步骤之后，可以用水洗涤三氧化铀以除去作为杂质存在的水溶性盐。 此后，将三氧化二铀在低于200℃的温度下干燥。

公开(公告)号：US4004987A

公开(公告)日：1977-01-25

申请号：US514479

申请日：1974-10-15

Applicant: Chau-Ting Chang

Inventor： Chau-Ting Chang

IPC: C22B11/10 ,  C22B60/02 ,  C25C1/00 ,  C25C5/02

CPC classification number: C25C1/00 ,  C22B11/10 ,  C22B60/0213 ,  C22B60/0278

Abstract: Metal amalgams are prepared electrolytically by using an ion exchange membrane for the purpose of adjusting pH during the course of electrolysis. The subsequent thermal decomposition of the thereby obtained amalgam under reduced pressure brings forth metallic powder and solid metal.

Abstract translation: 为了在电解过程中调节pH，使用离子交换膜电解制备金属汞齐。 由此得到的汞齐在减压下进行热分解，得到金属粉末和固体金属。