发明名称 |
RECOVERY OF PURE PLATINUM AND PALLADIUM |
摘要 |
<p>A process for recovery of platinum and palladium from an impure substantially gold-free precious and base metal-bearing acidic chloride, or mixed chloride/sulphate, solution comprises the steps of: contacting the acidic solution having a pH less than about 1.5 with an organic solution comprising an 8-hydroxy quinoline solvent extraction reagent, a phase modifier and an aromatic diluent to extract simultaneously platinum and palladium into the organic solution; scrubbing the loaded organic solution to remove co-extracted impurities and acid; stripping the loaded organic with a buffer solution operating in the pH range 2-5 at 20-50 DEG C to selectively recover the platinum; stripping the platinum-free loaded organic with 3-8 M hydrochloric acid to recover the palladium; and regenerating the organic solution by washing with water.</p> |
申请公布号 |
EP0404327(B1) |
申请公布日期 |
1993.08.04 |
申请号 |
EP19900305101 |
申请日期 |
1990.05.11 |
申请人 |
NORANDA INC. |
发明人 |
HARRIS, G. BRYN;MONETTE, SERGE;BARRY, JEAN-PIERRE;STANLEY, ROBERT W. |
分类号 |
B01D11/04;C01G55/00;C22B3/26;C22B3/36;C22B11/00 |
主分类号 |
B01D11/04 |
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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