发明名称 |
Metal leaching and recovery process. |
摘要 |
<p>Pt group metals are recovered from an ore concentrate also contg. S by; i) roasting in an O2-contg. atmos. at sufficient temp. to oxidise some of the s, until the S content falls to approx. 2 wt.%, ii) mixing the roasted concentrate with aw. HCl and sufficient HNO3 to enhance dissolution of the metals, and iii) heating the mixt. to sufficient temp. to dissolve a substantial proportion of the metals present. The presence of a sufficient partial pressure of O2 facilitates at least partial regeneration of HNO3.</p> |
申请公布号 |
EP0637635(A2) |
申请公布日期 |
1995.02.08 |
申请号 |
EP19940110433 |
申请日期 |
1994.07.05 |
申请人 |
NORTH AMERICAN PALLADIUM LTD. |
发明人 |
MCDOULETT, C. DALE JR.;RESCHKE, GEORGE W. |
分类号 |
C22B3/06;C22B3/46;C22B11/00;C22B15/00;(IPC1-7):C22B3/06;C22B1/06;C22B3/24;C22B3/26;C22B3/36 |
主分类号 |
C22B3/06 |
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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