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公开(公告)号:US06623710B1
公开(公告)日:2003-09-23
申请号:US09530825
申请日:2000-09-29
IPC分类号: C22B6000
CPC分类号: G21C19/46 , Y02W30/883
摘要: A spent fuel reprocessing method including the steps of partitioning U and Pu(III) in a solvent by solvent extraction and subsequently polishing the solvent in a neptunium rejection operation for removing Np therefrom. The solvent obtained from the neptunium rejection operation (the polished solvent or NpA solvent product) is then recycled to a U/Pu partitioning operation. The method enables a reduction in solvent feed and solvent effluent volumes.
摘要翻译: 一种乏燃料后处理方法,包括以下步骤:通过溶剂萃取在溶剂中分配U和Pu(III),随后在去除Np的Neptunium排除操作中抛光溶剂。 然后将从Neptunium排除操作获得的溶剂(抛光溶剂或NpA溶剂产物)再循环至U / Pu分配操作。 该方法能够降低溶剂进料和溶剂流出物体积。
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公开(公告)号:US6093375A
公开(公告)日:2000-07-25
申请号:US117863
申请日:1998-08-07
CPC分类号: C01G56/008 , G21C19/46 , Y02W30/883
摘要: A spent fuel reprocessing method includes at least the formation of an aqueous solution and at least one solvent extraction step. Formohydroxarmic acid is used to reduce any Np(VI) to Np(V) and/or to form a complex with Np(IV). As a result, substantially all the neptunium present is retained in the aqueous phase during solvent extraction.
摘要翻译: PCT No.PCT / GB97 / 00416 Sec。 371日期:1998年8月7日 102(e)日期1998年8月7日PCT 1997年2月14日提交PCT公布。 出版物WO97 / 30456 PCT 日期1997年8月21日废燃料后处理方法至少包括水溶液的形成和至少一个溶剂萃取步骤。 使用氢羟肟酸将任何Np(VI)还原成Np(V)和/或与Np(IV)形成络合物。 结果,在溶剂萃取期间,存在的基本上所有的is素都保留在水相中。
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