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1. 发明授权

US4749519A Process for the recovery of plutonium contained in solid waste 失效
标题翻译：回收固体废物中所含钚的方法
公开(公告)号：US4749519A
公开(公告)日：1988-06-07
申请号：US47635
申请日：1987-05-07
申请人： Gerard Koehly , Jacques Bourges , Charles Madic , Michael Lecomte
发明人： Gerard Koehly , Jacques Bourges , Charles Madic , Michael Lecomte
IPC分类号： C01G56/00 , C22B3/04 , C22B60/04 , G21C19/46 , G21F9/00 , G21F9/30 , C25C1/22 , G21C , G21C19/44
CPC分类号： C22B3/045 , C22B60/04 , G21F9/30 , Y02P10/234
摘要： The invention relates to a process for recovering the plutonium contained in the solid waste, such as process, technological and laboratory waste.The waste is contacted with aqueous nitric acid solution having a nitric acid concentration of 2 to 8 mole/l, which contains a compound of Ag.sup.2+ soluble in the solution, for oxidizing the plutonium present in the waste and for dissolving same in the nitric solution.Preferably, contacting takes place in an electrolytic cell having an anode and a cathode, by applying a potential difference between anode and cathode which is sufficient to continuously regenerate the Ag.sup.2+ ions used for oxidizing the elements present in said waste.
摘要翻译：本发明涉及一种用于回收固体废物中所含钚的方法，例如过程，技术和实验室废物。将废物与硝酸浓度为2〜8摩尔/升的硝酸水溶液接触，其含有可溶于溶液中的Ag 2+化合物，用于氧化存在于废物中的钚并将其溶解在硝酸溶液中。优选地，在具有阳极和阴极的电解池中进行接触，通过施加阳极和阴极之间的电位差，其足以连续地再生用于氧化存在于所述废物中的元素的Ag 2+离子。

2. 发明授权

US07157003B2 Cyclic method for separating chemical elements present in an aqueous solution 有权
标题翻译：用于分离存在于水溶液中的化学元素的循环方法
公开(公告)号：US07157003B2
公开(公告)日：2007-01-02
申请号：US10679462
申请日：2003-10-07
申请人： Pascal Baron , Michael Lecomte , Xavier Heres , Bernard Mauborgne
发明人： Pascal Baron , Michael Lecomte , Xavier Heres , Bernard Mauborgne
IPC分类号： B01D11/00
CPC分类号： G21F9/12 , C01F17/0006 , C22B3/0005 , C22B59/00 , C22B60/0295 , G21F9/125 , Y02P10/234
摘要： The invention concerns a cyclic method for separating at least one chemical element E1 from at least one chemical element E2 from an aqueous solution containing said elements, which employs a mixture of two extractants operating in non-overlapping chemical fields.Each cycle of said method comprises: a) co-extracting elements E1 and E2 by means of an organic phase containing a first extractant suited to causing the migration of said elements into said organic phase; b) adding to the organic phase a second extractant suited to selectively retaining the element(s) E2 in said organic phase during step c): c) selectively stripping the element(s) E1 from the organic phase; d) selectively stripping the element(s) E2 from the organic phase; e) separating the first and second extractants present in said organic phase at the end of step d).
摘要翻译：本发明涉及一种循环方法，用于将至少一种化学元素E 1与至少一种化学元素E 2从含有所述元素的水溶液中分离，其使用在非重叠化学领域中操作的两种萃取剂的混合物。所述方法的每个循环包括：a）通过含有适于使所述元素迁移到所述有机相中的第一萃取剂的有机相共萃取元素E 1和E 2; b）在步骤c）期间向所述有机相中加入适于选择性地将元素E 2保留在所述有机相中的第二萃取剂：c）选择性地从有机相中汽提元素E 1; d）从有机相中选择性地剥离元素E 2; e）在步骤d）结束时分离存在于所述有机相中的第一和第二萃取剂。

3. 发明申请

US20060147359A1 Method for separating uranium (VI) from actinides(IV) and/or (VI) and the use thereof 失效
标题翻译：从锕系元素（Ⅳ）和/或（Ⅵ）中分离铀（Ⅵ）的方法及其用途
公开(公告)号：US20060147359A1
公开(公告)日：2006-07-06
申请号：US10549101
申请日：2004-11-17
申请人： Binh Dinh , Michael Lecomte , Pascal Baron , Christian Sorel , Gilles Bernier
发明人： Binh Dinh , Michael Lecomte , Pascal Baron , Christian Sorel , Gilles Bernier
IPC分类号： C22B60/02
CPC分类号： G21F9/06 , C01G43/003 , G21C19/46 , Y02W30/883
摘要： The invention relates to a method for separating uranium(VI) from one or more actinides selected from actinides(IV) and actinides(VI) other than uranium(VI), characterized in that it comprises the following steps: a) bringing an organic phase, which is immiscible with water and contains the said uranium and the said actinide or actinides, in contact with an aqueous acidic solution containing at least one lacunary heteropolyanion and, if the said actinide or at least one of the said actinides is an actinide(VI), a reducing agent capable of selectively reducing this actinide(VI); and b) separating the said organic phase from the said aqueous solution. Applications: reprocessing irradiated nuclear fuels, processing rare-earth, thorium and/or uranium ores.
摘要翻译：本发明涉及一种从铀（Ⅳ）和除铀（Ⅵ）以外的锕系元素（Ⅵ）中选择一种或多种锕系元素分离铀（Ⅵ）的方法，其特征在于包括以下步骤：a），其与水不混溶并且含有所述铀和所述锕系元素或锕系元素，与含有至少一个空隙杂多阴离子的酸性水溶液接触，并且如果所述锕系元素或所述锕系元素中的至少一种为锕系元素（Ⅵ ），能够选择性还原该锕系元素（VI）的还原剂; 和b）从所述水溶液中分离出所述有机相。应用：后处理辐射核燃料，加工稀土，钍和/或铀矿。

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