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| Study on Comprehensive Recovery of Copper Smelting Dust |
| Received:September 30, 2019 Revised:October 09, 2019 |
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| DOI：doi：10.3969/j.issn.1007-7545.2020.03.004 |
| KeyWord:copper smelting; white dust; leaching; recovery; precipitation |
| Author | Institution |
| HUANG Jiaquan |
青海铜业有限责任公司 |
| MA Yongpeng |
中南大学 资源加工与生物工程学院 |
| XU Bin |
中南大学 |
| GAO Wei |
中南大学 |
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| Abstract: |
| Leaching effect of copper smelting dust in different leaching systems was introduced. The results show that acid leaching system is more effective than water leaching system and alkali leaching system. Leaching rate of Cu, Zn, As, Cd and Fe is 99.75%, 99.81%, 86.85%, 95.85% and 57.83% respectively under the optimum acid leaching conditions including H2SO4 concentration of 2 mol/L, L/S=4, temperature of 50 ℃, leaching time of 2 h, and stirring rate of 400 r/min. Recovery rate of Cu, As, Zn and Cd from acid leaching solution is 99.70%, 98.81%, 99.47% and 99.98% respectively under the optimal conditions through process of iron powder replacement, de-arsenic with iron salt precipitation and neutralization precipitation of zinc and cadmium. |
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