公开(公告)号：US08795611B2

公开(公告)日：2014-08-05

申请号：US13515499

申请日：2010-12-20

Applicant: Manuel Miguirditchian ,  Pascal Baron ,  Isabelle Bisel ,  Binh Dinh ,  Christian Sorel ,  Jean Bertin

Inventor： Manuel Miguirditchian ,  Pascal Baron ,  Isabelle Bisel ,  Binh Dinh ,  Christian Sorel ,  Jean Bertin

IPC: C01G43/00

CPC classification number: C22B3/0024 ,  C22B60/0239 ,  C22B60/026 ,  G21C19/46 ,  Y02P10/234 ,  Y02W30/883

Abstract: A method with which uranium from a natural uranium concentrate may be purified, including a) extracting the uranium present as uranyl nitrate in an aqueous phase A1 resulting from the dissolution of the natural uranium concentrate in nitric acid, by means of an organic phase which contains an extractant in an organic diluent; b) washing the organic phase obtained at the end of step a), with an aqueous phase A2; and c) stripping the uranyl nitrate of the organic phase obtained at the end of step b), by circulating this organic phase in an apparatus, as a counter current against an aqueous phase A3. The extractant is an N,N-dialkylamide and the ratio between the flow rate at which the organic phase obtained at the end of step b) and the aqueous phase A3 circulate in the apparatus where step c) occurs, is greater than 1.

Abstract translation: 可以纯化来自天然铀浓缩物的铀的方法，包括：a）在天然铀浓缩物在硝酸中溶解的水相A1中提取作为硝酸铀酰存在的铀，通过含有 有机稀释剂中的萃取剂; b）用水相A2洗涤在步骤a）结束时获得的有机相; 和c）通过将该有机相循环在装置中，作为逆水相A3的逆流，汽提在步骤b）结束时获得的有机相的铀酰硝酸盐。 萃取剂为N，N-二烷基酰胺，步骤b）结束时得到的有机相与水相A3在步骤c）的装置中循环的流动速率之比大于1。

公开(公告)号：US20120247276A1

公开(公告)日：2012-10-04

申请号：US13515499

申请日：2010-12-20

Applicant: Manuel Miguirditchian ,  Pascal Baron ,  Isabelle Bisel ,  Binh Dinh ,  Christian Sorel ,  Jean Bertin

Inventor： Manuel Miguirditchian ,  Pascal Baron ,  Isabelle Bisel ,  Binh Dinh ,  Christian Sorel ,  Jean Bertin

IPC: C22B60/02

CPC classification number: C22B3/0024 ,  C22B60/0239 ,  C22B60/026 ,  G21C19/46 ,  Y02P10/234 ,  Y02W30/883

Abstract: A method with which uranium from a natural uranium concentrate may be purified, includinga) extracting the uranium present as uranyl nitrate in an aqueous phase A1 resulting from the dissolution of the natural uranium concentrate in nitric acid, by means of an organic phase which contains an extractant in an organic diluent;b) washing the organic phase obtained at the end of step a), with an aqueous phase A2; andc) stripping the uranyl nitrate of the organic phase obtained at the end of step b), by circulating this organic phase in an apparatus, as a counter current against an aqueous phase A3.The extractant is an N,N-dialkylamide and the ratio between the flow rate at which the organic phase obtained at the end of step b) and the aqueous phase A3 circulate in the apparatus where step c) occurs, is greater than 1.

Abstract translation: 可以纯化来自天然铀浓缩物的铀的方法，包括：a）在天然铀浓缩物在硝酸中溶解的水相A1中提取作为硝酸铀酰存在的铀，通过含有 有机稀释剂中的萃取剂; b）用水相A2洗涤在步骤a）结束时获得的有机相; 和c）通过将该有机相循环在装置中，作为逆水相A3的逆流，汽提在步骤b）结束时获得的有机相的铀酰硝酸盐。 萃取剂为N，N-二烷基酰胺，步骤b）结束时得到的有机相与水相A3在步骤c）的装置中循环的流动速率之比大于1。