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1.发明授权
公开(公告)号：EP1851172B1
公开(公告)日：2014-04-09
申请号：EP06849325.3
申请日：2006-01-12
CPC分类号： C01G43/003 , B01D11/0203 , B01D11/0284 , B01D11/0288 , B01D11/0292 , C01P2006/80 , C22B3/0005 , C22B3/02 , C22B60/0239 , C22B60/026 , C22B60/04 , G21C19/46 , Y02P10/234 , Y02P20/544 , Y02W30/883
摘要： Embodiments of a method and a system for recovering a metal, such as uranium, from a metal-containing material are disclosed. The metal-containing material is exposed to an extractant containing a liquid or supercritical-fluid solvent and an acid-base complex including an oxidizing agent and a complexing agent. Batches of the metal-containing material are moved through a series of stations while the extractant is moved through the stations in the opposite direction. After the extraction step, the metal is separated from the solvent, the complexing agent and/or other metals by exposing the extract to a stripping agent in a countercurrent stripping column. The complexing agent and the solvent exit the column and are separated from each other by reducing the pressure. The recovered complexing agent is recharged with fresh oxidizing agent and recombined with fresh or recovered solvent to form a recovered extractant, which is distributed through the extraction stations.
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公开(公告)号：EP2531626A1
公开(公告)日：2012-12-12
申请号：EP11739438.7
申请日：2011-01-27
申请人： Outotec OYJ
发明人： NYMAN, Bror , PAATERO, Erkki , HULTHOLM, Stig-Erik , EKMAN, Eero
CPC分类号： C01G43/003 , C22B3/0047 , C22B60/026 , Y02P10/234
摘要： The invention relates to a method for the selective recovery of uranium from a sulphate-based acidic aqueous solution of uranium containing iron and other metals by means of solvent extraction, in which the extractant used in the organic extraction solution is bis(2-ethylhexyl) phosphate and a liquid branched trialkyl phosphine oxide is the modifying agent. It is typical of the method that the uranium concentration in the feed solution is less than 50 mg/l and a reducing agent is introduced into the aqueous and/or extraction solution to prevent the permanent oxidation of iron to trivalent. In the method the majority of the extraction solution is circulated in a circuit consisting of the extraction stage and the storage tank and only a small part of the uranium-loaded extraction solution is routed to scrubbing and stripping.
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3.发明公开PROCESS FOR REPROCESSING A SPENT NUCLEAR FUEL AND OF PREPARING A MIXED URANIUM-PLUTONIUM OXIDE 有权过程进行回收废核燃料和用于生产混合铀钚氧化物
公开(公告)号：EP2022061A1
公开(公告)日：2009-02-11
申请号：EP07729457.7
申请日：2007-05-23
发明人： BARON, Pascal , DINH, Binh , MASSON, Michel , DRAIN, François , EMIN, Jean-Luc
CPC分类号： G21C19/46 , C01G43/003 , C01G43/01 , C01G56/00 , C01G56/001 , Y02W30/883
摘要： The invention relates to a process for reprocessing a spent nuclear fuel and for preparing a mixed uranium-plutonium oxide, which process comprises: a) the separation of the uranium and plutonium from the fission products, the americium and the curium that are present in an aqueous nitric solution resulting from the dissolution of the fuel in nitric acid, this step including at least one operation of coextracting the uranium and plutonium from said solution by a solvent phase; b) the partition of the coextracted uranium and plutonium to a first aqueous phase containing plutonium and uranium, and a second aqueous phase containing uranium but no plutonium; c) the purification of the plutonium and uranium that are present in the first aqueous phase; and d) a step of coconverting the plutonium and uranium to a mixed uranium/plutonium oxide. Applications: reprocessing of nuclear fuels based on uranium oxide or on mixed uranium-plutonium oxide.
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公开(公告)号：EP2773783A1
公开(公告)日：2014-09-10
申请号：EP12846133.2
申请日：2012-10-31
申请人： Urtek, Llc , Richardson, Marcus, Worsley , Davidson, James, Andrew , Jones, Bryn, Llywelyn , Page, Jessica, Mary , Soldenhoff, Karin, Helene , Safinski, Tomasz, Artur , Tran, Manh, Toan
发明人： RICHARDSON, Marcus, Worsley , DAVIDSON, James, Andrew , JONES, Bryn, Llywelyn , PAGE, Jessica, Mary , SOLDENHOFF, Karin, Helene , SAFINSKI, Tomasz, Artur , TRAN, Manh, Toan
CPC分类号： C01B25/238 , C01G43/003 , C22B60/0282
摘要： In a preferred embodiment, a process for extracting uranium from wet-process phosphoric acid (WPA), comprises separating uranium from WPA to produce a loaded uranium solution stream and a uranium depleted WPA stream. The loaded uranium solution stream is then contacted by with an ion exchange resin. Uranium species bound to the ion exchange resin are eluted by contacting the resin with a solution comprising anions to produce a loaded uranium eluant stream. The loaded uranium eluant stream is treated to provide a uranium containing product.
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5.发明授权PROCESS FOR REPROCESSING A SPENT NUCLEAR FUEL AND OF PREPARING A MIXED URANIUM-PLUTONIUM OXIDE 有权再生处理核燃料和制备混合铀 - 钚的方法
公开(公告)号：EP2022061B1
公开(公告)日：2009-10-28
申请号：EP07729457.7
申请日：2007-05-23
发明人： BARON, Pascal , DINH, Binh , MASSON, Michel , DRAIN, François , EMIN, Jean-Luc
CPC分类号： G21C19/46 , C01G43/003 , C01G43/01 , C01G56/00 , C01G56/001 , Y02W30/883
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公开(公告)号：EP1882507A1
公开(公告)日：2008-01-30
申请号：EP07112917.5
申请日：2007-07-23
CPC分类号： C01G43/003 , B01J41/05 , B01J41/12 , B01J41/14 , C02F2001/422
摘要： Die vorliegende Erfindung betrifft die Verwendung von monodispersen, makroporösen Anionenaustauschern vom Typ I oder vom Typ II in IIydrometallurgieprozessen zur Gewinnung von Wertmetallen.
摘要翻译： 使用I型单分散的大孔阴离子交换剂用于回收树脂或II型，用于回收贵金属，其吸附中心是被烷基取代的季铵基团，优选1-4C烷基，其中 该季铵基团至少表现出羟基烷基，优选羟基-4-C烷基。 包括用于通过树脂制浆方法从含水贵重金属的水中回收贵重金属的方法或使用单分散的大孔阴离子交换剂进行原位浸出方法的独立权利要求。
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7.发明公开
公开(公告)号：EP1851172A2
公开(公告)日：2007-11-07
申请号：EP06849325.3
申请日：2006-01-12
IPC分类号： C01G43/00
CPC分类号： C01G43/003 , B01D11/0203 , B01D11/0284 , B01D11/0288 , B01D11/0292 , C01P2006/80 , C22B3/0005 , C22B3/02 , C22B60/0239 , C22B60/026 , C22B60/04 , G21C19/46 , Y02P10/234 , Y02P20/544 , Y02W30/883
摘要： Embodiments of a method and a system for recovering a metal, such as uranium, from a metal-containing material are disclosed. The metal-containing material is exposed to an extractant containing a liquid or supercritical-fluid solvent and an acid-base complex including an oxidizing agent and a complexing agent. Batches of the metal-containing material are moved through a series of stations while the extractant is moved through the stations in the opposite direction. After the extraction step, the metal is separated from the solvent, the complexing agent and/or other metals by exposing the extract to a stripping agent in a countercurrent stripping column. The complexing agent and the solvent exit the column and are separated from each other by reducing the pressure. The recovered complexing agent is recharged with fresh oxidizing agent and recombined with fresh or recovered solvent to form a recovered extractant, which is distributed through the extraction stations.
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公开(公告)号：EP4426647A1
公开(公告)日：2024-09-11
申请号：EP22817527.9
申请日：2022-11-03
申请人： COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES , Centre National de la Recherche Scientifique , UNIVERSITE DE MONTPELLIER , Ecole Nationale Supérieure de Chimie de Montpellier
CPC分类号： C01F17/17 , C01P2006/8020130101 , C01G43/003 , Y02P10/20
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9.发明授权
公开(公告)号：EP2578538B1
公开(公告)日：2015-11-04
申请号：EP12152025.8
申请日：2012-01-22
CPC分类号： C01G43/003 , C01F15/00 , C01G99/003 , C01P2006/80
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公开(公告)号：EP2531626A4
公开(公告)日：2014-11-19
申请号：EP11739438
申请日：2011-01-27
申请人： OUTOTEC OYJ
发明人： NYMAN BROR , PAATERO ERKKI , HULTHOLM STIG-ERIK , EKMAN EERO
CPC分类号： C01G43/003 , C22B3/0047 , C22B60/026 , Y02P10/234
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