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| Study on Rotary Kiln Oxidizing Roasting – Acidic Leaching of Scrap Copper Anode Slime |
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Received:October 29, 2019
Revised:October 31, 2019
Accepted:November 04, 2019
Published Online:March 17, 2020
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| DOI：doi：10.3969/j.issn.1007-7545.2020.04.005 |
| KeyWord:rotary kiln; oxidizing coasting; scrap copper anode slime; copper; acid leaching |
| Author | Institution |
| XU Xiaofeng |
中国恩菲工程技术有限公司 |
| Li Chong |
中国恩菲工程技术有限公司 |
| Cui Mu |
中国恩菲工程技术有限公司 |
| Song Zhenzhen |
中国恩菲工程技术有限公司 |
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| Abstract: |
| Copper was extracted from scrap copper anode slime by rotary kiln oxidizing roasting, acid leaching. Effects of process conditions on copper leaching rate were investigated. The results show that under the optimum conditions including rotary kiln oxidizing coasting temperature of 700 ℃, holding time of 20 min, particle size of -5 mm, and air flow rate of 0.5 L/min, copper leaching rate is 97.10%, nickel leaching rate is 90% above, and most of Pb, Sn, Sb, Bi, Au, Ag, and Pd remain in leaching residue, providing raw materials for subsequent extraction of valuable metals and precious metals. |
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