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| Study on Recovery of Valuable Metals from Roasting Cyanidation Residue |
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Received:October 26, 2016
Revised:October 29, 2016
Accepted:October 31, 2016
Published Online:January 22, 2017
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| DOI：doi：10.3969/j.issn.1007-7545.2017.02.004 |
| KeyWord:cyanidation residue; high temperature chloridizing; valuable metals; volatilization rate; gradient drying |
| Author | Institution |
| SUN Liu-gen |
北京矿冶研究总院 |
| HUANG Hai-hui |
北京矿冶研究总院 |
| XU Xiao-hui |
北京矿冶研究总院 |
| CHANG Yao-chao |
北京矿冶研究总院 |
| WEI Qi-jin |
北京矿冶研究总院 |
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| Abstract: |
| Recovery of valuable metals from roasting cyanidation residue by high temperature chloridizing was investigated. The results show that volatilization rate of Au, Ag, Cu, Pb and Zn is 97.52%, 71.78%, 85.92%, 98.59% and 93.81%, respectively under the conditions of CaCl2 addition of 7%, roasting temperature of 1 100 ℃, and roasting time of 2 h. Gradient drying process was adopted to prevent pellet bursting and after 40 min drying, falling strength of dry pellets is >10 times/0.5 m and compressive strength is 90%>100 N, both basically meeting the feeding requirement of rotary kiln. |
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