公开(公告)号：US4983300A

公开(公告)日：1991-01-08

申请号：US285768

申请日：1988-12-16

申请人： Michel Germain ,  Bruno Gillet ,  Jean-Yves Pasquiou

发明人： Michel Germain ,  Bruno Gillet ,  Jean-Yves Pasquiou

IPC分类号： B01D11/04 ,  C01G56/00 ,  C22B60/04 ,  G21C19/46

CPC分类号： G21C19/46 ,  C01G56/001 ,  C22B60/04 ,  Y02W30/883

摘要： The invention relates to a process for the reextraction in aqueous solution of the plutonium present in an organic solvent, more particularly usable for uranium-plutonium separation.According to this process the organic solvent is contacted with an acid aqueous solution of uranous salt, e.g. uranous nitrate, and hydroxylamine salt, e.g. hydroxylamine nitrate. Under these conditions, the uranous nitrate acts as a reducing agent for plutonium at valency (III and the hydroxylamine nitrate, which is also a plutonium reducing, agent, stabilizes Pu(III) and U(IV) in aqueous phase.Performances comparable to those of the U(IV)-hydrazone nitrate system are obtained without forming prejudicial hydrazine nitrate decomposition products. (FIG. 2).

摘要翻译： 本发明涉及在存在于有机溶剂中的钚的水溶液中再提取的方法，更特别可用于铀 - 钚分离。 根据该方法，将有机溶剂与酸性尿素水溶液接触。 硝酸铀和羟胺盐，例如。 硝酸羟胺。 在这些条件下，硝酸铀作为钚的还原剂（III和硝酸羟胺，也是钚还原剂，在水相中稳定Pu（III）和U（IV），性能与那些相当 的铀（IV） - 腙硝酸盐体系，而不会形成有害的硝酸肼分解产物（图2）。