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| Effect of Dissolving of Ferric Oxide from Calcine Cyanide Residue on Leaching of Gold and Silver |
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Received:September 23, 2015
Revised:September 23, 2015
Accepted:September 24, 2015
Published Online:November 18, 2015
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| DOI：Doi：10.3969/j.issn.1007-7545.2015.12.013 |
| KeyWord:refractory gold concentrate; calcine cyanide residue; ferric oxide-encapsulated; gold; silver; acid leaching |
| Author | Institution |
| Zhang Yuehong |
青海省第一地质矿产勘察院 |
| Li Yun |
北京矿冶研究总院 |
| Wei Jin |
招远市招金金合科技有限公司 |
| Wang Yun |
北京矿冶研究总院 |
| Luan Dongwu |
招远市招金金合科技有限公司 |
| Liu Hongxiao |
新疆星塔矿业有限公司 |
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| Abstract: |
| Calcine cyaniding-residue produced from two-stage roasting of refractory gold concentrate was leached with sulfuric acid. Gold can be easily cyaniding leached after ferric oxide was dissociated and unlocked from the wrapped gold during acid leaching. Extraction efficiency of gold and silver raised remarkably when ferric oxide was dissociated continuously, which is proved to be an effective pretreatment for refractory gold concentrate to improve gold and silver extraction efficiency. |
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