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| PROCESS DEVELOPMENT FOR ROASTING AND LECHING OF GOLD AND COPPER FROM GOLD CONCENTRATES CONTAINING HIGH-GRADE COPPER SULPHIDES |
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| DOI：doi：10.3969/j.issn.1007-7545.年份.期号.顺序号 |
| KeyWord:Gold copper concentrates, Copper hydrometallurgy, Roasting, Leaching, Cyaniding, |
| Zhang Wenge |
Zhang Wenge (Shenyang Mining and Metallurgical Research Institute)
(Shenyang China Postcode: 110023)
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| Abstract: |
| Reserch results of process development are reported for roasting and leaching of gold and copper from gold concentrates containing high-grade copper sulphides. Enlarged tests on the process in the bench scale experiment give the overall recovery of gold and copper 98.74% and 93.03% respectively from gold concentrates containing Au 42g/t and Cu15% which are difficult to recover by single direct cyanidation. In accordance with feasibility study results on industrial production in the scale of 50t/d, the economical indices are profit and tax rate of capital investment 23.48%, profit rate 15.94% and DCF 18.5%. A technological key is solved in the copper hydrometallurgy. Higher technological indices and better economical effects which have the advantage over pyrometallurgical treatment colud be obtained. |
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