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| Research on the process of chloridizing roast for treating cyanide residue |
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Received:November 23, 2014
Revised:November 23, 2014
Accepted:November 28, 2014
Published Online:March 14, 2016
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| DOI： |
| KeyWord:Cyanide;residue, Chloridizing;roast, Gold;and silver;recovery |
| Author | Institution |
| Liu Hong-xiao |
Zhaojin Xing-ta Mining Industry Co,Ltd,Tuoli |
| Wang Wei-zhen |
Beijing General Research Institute of Mining & Metallurgy |
| Yang Xing-qing |
Zhaojin Xing-ta Mining Industry Co,Ltd,Tuoli |
| Sun Zhen |
Zhaojin Xing-ta Mining Industry Co,Ltd,Tuoli |
| Zhao Li-ming |
Shandong Gold Group Yantai Design Research Engineering Co,Ltd |
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| Abstract: |
| The cyanide residue from a smelter in Xinjiang was treated by the process of “Pellet-Desiccation-Chloridizing roast” for recovery of gold and silver. And the effect of the conditions of chloridizing roast on the metal volatilization rate was studied. The optimum conditions were obtained as follows: the addition of CaCl2: 7%(wt%), the roast temperature: 1100℃ and reaction time: 60min. Under the optimum conditions, the volatilization rates of Au and Ag were 98% and 62%, respectively. The volatilization rates of Cu, Pb and Zn were above 80%. The concentrations of Au and Ag in pellet after roasted decreased to 0.47g/t and 6.12g/t, respectively. |
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