发明名称 |
Separation of rare earth values by liquid/liquid extraction |
摘要 |
The rare earth values contained in an aqueous solution of the nitrates of at least two rare earth elements are conveniently separated by first liquid/liquid extracting such aqueous nitrate solution with a liquid organic phase containing at least two P(O)R1R2R3/P(O)R4R5R6 organophosphorus extractants.
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申请公布号 |
US5192443(A) |
申请公布日期 |
1993.03.09 |
申请号 |
US19910657957 |
申请日期 |
1991.02.21 |
申请人 |
RHONE-POULENC CHIMIE |
发明人 |
DELLOYE, THIERRY;SABOT, JEAN-LOUIS |
分类号 |
C01F17/00;C22B3/38;C22B59/00 |
主分类号 |
C01F17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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