发明授权
- 专利标题: Process for recovery by a solvent of the uranium present in phosphoric acid
- 专利标题(中): 通过磷酸中存在的铀溶剂回收的方法
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申请号: US586288申请日: 1984-03-05
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公开(公告)号: US4643882A公开(公告)日: 1987-02-17
- 发明人: Antoine Floreancig
- 申请人: Antoine Floreancig
- 申请人地址: FRX
- 专利权人: Uranium Pechiney
- 当前专利权人: Uranium Pechiney
- 当前专利权人地址: FRX
- 优先权: FRX8304099 19830308
- 主分类号: C01B25/235
- IPC分类号: C01B25/235 ; C22B60/02 ; C01G43/00 ; C01B25/234
摘要:
A process for the recovery of the uranium present in phosphoric acid produced by a wet process in (A) by means of a suitable solvent (L.sub.9), which is carried out after separation of the gypsum in (B) formed in the attack operation, and elimination of the solid materials which are still in suspension, characterized in that, in order to avoid the formation of dross in the course of the operation of extracting the uranium which is previously reduced in (D), the step of eliminating the solid materials which are still in suspension is effected by a final solid-liquid separation operation in (C) and/or in (E), prior to extraction of the uranium in (F), in the presence of an added fraction of gypsum (S.sub.22) and/or (S.sub.23) resulting from the production of H.sub.3 PO.sub.4.
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