公开(公告)号：US5609745A

公开(公告)日：1997-03-11

申请号：US611625

申请日：1996-03-06

申请人： Jean M. Adnet ,  Louis Donnet ,  Philippe Brossard ,  Jacques Bourges

发明人： Jean M. Adnet ,  Louis Donnet ,  Philippe Brossard ,  Jacques Bourges

IPC分类号： B01J19/08 ,  C22B60/02 ,  C25B1/00 ,  C25C1/22 ,  G21C19/46 ,  C25C1/00

CPC分类号： G21C19/46 ,  C22B60/0295 ,  C25B1/00 ,  Y02W30/883

摘要： The invention relates to a process for the electrochemical oxidation of Am(III) to Am(VI), usable for separating americium from spent nuclear fuel reprocessing solutions.The process consists of adding to the aqueous nitric solution (17) containing the Am(III) a) heteropolyanion able to complex the americium, such as potassium phosphotungstate and b) the Ag(II) ion for oxidizing Am(III) being converted into Ag(I), and subjecting the solution to an electrolysis under conditions such that electrochemical regeneration takes place of the Ag(II) ion from the Ag(I) ion obtained during said oxidation.After oxidizing Am(III) to Am(VI), it is possible to extract the latter in an appropriate organic solvent.

摘要翻译： 本发明涉及用于将Am（III）电化学氧化成Am（VI）的方法，其可用于从乏核燃料再处理溶液中分离。。 该方法包括加入含有Am（III）的含水硝酸溶液（17）a）能够复合ium的杂多阴离子，例如磷钨酸钾，和b）用于氧化Am（III）的Ag（II）离子被转化为 Ag（I），并且在使得电化学再生发生在所述氧化期间获得的Ag（I）离子的Ag（II）离子的条件下使溶液进行电解。 在将Am（III）氧化成Am（VI）之后，可以将其在适当的有机溶剂中萃取。

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。

公开(公告)号：US06623712B1

公开(公告)日：2003-09-23

申请号：US09719734

申请日：2000-12-15

申请人： Jean-Marc Adnet ,  Jacques Bourges ,  Pascal Bros ,  Philippe Brossard

发明人： Jean-Marc Adnet ,  Jacques Bourges ,  Pascal Bros ,  Philippe Brossard

IPC分类号： C22B6000

CPC分类号： G21C19/38 ,  C01G56/004 ,  C22B60/0239 ,  C22B60/04 ,  C23F1/30 ,  G21C19/46 ,  G21F9/30 ,  Y02W30/881 ,  Y02W30/883

摘要： The present invention relates to a process to dissolve plutonium or a plutonium alloy, by placing it in contact with an aqueous dissolution mixture, wherein said dissolution mixture comprises nitric acid, a carboxylic acid with complexing properties with respect to plutonium, and a compound comprising at least one —NH2 radical such as urea. The invention also relates to a process to convert plutonium or a plutonium alloy into plutonium oxide and to manufacture nuclear fuel from said oxide. The invention particularly applies to the dismantling of plutonium contained in nuclear weapons with a view to its use in civilian nuclear reactors, particularly in the form of MOX fuel.

摘要翻译： 本发明涉及通过将钚或钚合金与水溶性混合物接触来溶解钚或钚合金的方法，其中所述溶解混合物包含硝酸，相对于钚具有络合性质的羧酸和包含 至少一个-NH 2基团，例如脲。本发明还涉及将钚或钚合金转化成钚氧化物并从所述氧化物制造核燃料的方法。本发明特别适用于用包含在核武器中的钚的拆除 认为其在民用核反应堆中的使用，特别是以MOX燃料的形式。

公开(公告)号：US06428679B1

公开(公告)日：2002-08-06

申请号：US09381663

申请日：1999-11-09

申请人： Jacques Bourges ,  Jean-Charles Broudic ,  Jacques Dauby ,  Isabelle Leboucher ,  Olivier Leclerc ,  Pascal Baticle

发明人： Jacques Bourges ,  Jean-Charles Broudic ,  Jacques Dauby ,  Isabelle Leboucher ,  Olivier Leclerc ,  Pascal Baticle

IPC分类号： C25C120

CPC分类号： G21F9/06 ,  C02F1/4678 ,  C25B1/00 ,  C25C1/20 ,  Y02P10/212

摘要： This invention relates to an electrolytic method for the selective recovery and recycling of silver from a nitric acid solution containing it in the form of Ag(I), this method comprising successive steps of electro-deposition of the silver in the form of silver metal Ag(0), and then of redissolution of the deposited silver Ag(0), to give a final solution of Ag(I) in which the step of electro-deposition is carried out at a prescribed current and the successive steps of electro-deposition of the silver and of redissolution of the deposited silver are carried out in the same apparatus. The invention is applicable particularly to the selective recovery of Ag(I) by reduction to Ag metal from nitric acid solutions arising from the processing of plutonium containing waste in plants for the reprocessing of nuclear fuels and to the redissolution of the silver metal to form Ag(I) with the purpose of recycling it to an upstream point of the method.

摘要翻译： 本发明涉及一种用于从含有Ag（I）形式的硝酸溶液中选择性回收和回收银的电解方法，该方法包括以银金属Ag形式的银的电沉积的连续步骤 （0），然后沉积的银Ag（0）的再溶解，得到Ag（I）的最终溶液，其中电沉积步骤以规定的电流进行，并且电沉积的连续步骤 的银和沉积的银的再溶解在相同的装置中进行。 本发明特别适用于通过在植物中处理含有废钚的废弃物处理核燃料而产生的硝酸溶液还原成Ag金属并选择性回收Ag（I），以及银金属再溶解形成Ag （I），目的是将其回收到该方法的上游点。