发明名称 |
RECOVERY OF NICKEL FROM BIOLEACH SOLUTION |
摘要 |
<p>A bioleaching method is provided for recovering nickel from an ore selected from the group consisting nickel-containing lateritic ores and nickel-containing sulfidic ores or concentrates thereof. Where the ore selected is a nickel-containing lateritic ore, at least one micro-organism selective to the leaching of the lateritic ore is provided as an aqueous solution thereof maintained at a pH ranging from about 1 to 3 including a nutrient for the micro-organism. The ore may be in the form of a heap, or a charge in a vat, or as a slurry. Where the ore selected is a nickel-containing sulfidic ore or concentrate thereof, at least one micro-organism comprising a biooxidizing bacterium selective to the leaching of sulfidic ore is added as an aqueous solution to the sulfidic ore or concentrate maintained at a pH of about 1 to 3, including a nutrient for the bacterium. The ore either as a slurry, a heap, or a charge in a vat is bioleached for a time sufficient to effect the dissolution of the nickel in the ore and form a solution thereof and a residue which is separated from the solution. The nickel is then selectively extracted from the solution using an ion exchange resin, and the nickel thereafter extracted from the resin using a mineral acid.</p> |
申请公布号 |
EP0948655(B1) |
申请公布日期 |
2004.07.07 |
申请号 |
EP19960943728 |
申请日期 |
1996.12.12 |
申请人 |
BHP MINERALS INTERNATIONAL INC. |
发明人 |
DUYVESTEYN, WILLEM, P., C.;OMOFOMA, MATT, A. |
分类号 |
C22B23/00;C22B3/16;C22B3/18;C22B3/24;C22B3/42;(IPC1-7):C22B3/18 |
主分类号 |
C22B23/00 |
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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