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| Study of Leaching under Pressure on Copper-ZincSulphide Concentrate |
| Received:June 05, 2015 Revised:June 09, 2015 |
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| DOI： |
| KeyWord:Copper; Zinc; Pressure acid-leaching; Leaching percentage |
| Author | Institution |
| LUO Wen-bo |
Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology |
| WANG Ji-kun |
Yunnan Metallurgy Group Parent Company |
| ZHAO Xing-fan |
Yunnan Yongchang Silicon Industry Co.,Ltd. |
| ZHANG Zhong-yi |
Yunnan Yongchang Silicon Industry Co.,Ltd. |
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| Abstract: |
| Base on the influence factors research of pressure leaching for copper-zinc sulphide concentrate, the optimal conditions were established as follows: pressure 0.8MPa, leaching time 3h, grinding time 20min, initial sulfuric acid 150g/L, ratio of liquid to solid 6:1, leaching temperature 150℃, agitation speed of 600r/min, sodium lignosulfonate 0.5%. In the optimal conditions, the leaching percentages of zinc copper and iron were 99.45%, 94.23%, 64.57%, slag rate 45.53%, sulfur conversion rate 68.33%, gold and silver were enriched in slag. The enrichment and recovery of valuable metal have better effect. |
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