发明名称 |
SELECTIVE BIOLEACHING OF ZINC |
摘要 |
A method of selectively leaching zinc from a source material containing zinc in sulphide form and iron, comprises the steps of subjecting the source material to bioleaching with a strict sulphur oxidizing micro organism or a mixed culture of sulphur oxidizing and iron oxidizing micro organisms, in the presence of a nutrient solution containing less than about 15 mg/L phosphate ions. In another embodiment, the source material is in the form of a slurry having a solids concentration of at least about 25% on a weight per volume basis and a nutrient solution containing from about 1 mg/L to less than about 100 mg/L ammonium ions, from about 0.5 mg/L to less than about 40 mg/L magnesium ions and from about 2 mg/L to less than about 60 mg/L phosphate ions.
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申请公布号 |
CA2219572(A1) |
申请公布日期 |
1999.04.29 |
申请号 |
CA19972219572 |
申请日期 |
1997.10.29 |
申请人 |
COMINCO LTD. |
发明人 |
ABRAHAM, CHERIAN C.;LIZAMA, HECTOR M.;FREW, ROBERT G. |
分类号 |
C22B3/18;(IPC1-7):C22B3/18 |
主分类号 |
C22B3/18 |
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