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| Study on Raw-ore Roasting of Magnesian Carbonate Rock Type Micro-disseminated Refractory Gold Deposits |
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Received:November 06, 2015
Revised:November 16, 2015
Accepted:November 17, 2015
Published Online:April 18, 2016
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| DOI：doi：10.3969/j.issn.1007-7545.2016.05.011 |
| KeyWord:magnesian carbonate rock; micro-disseminated refractory gold deposits; raw ore roasting |
| Author | Institution |
| Xu Xiao-hui |
北京矿冶研究总院 |
| Li Yun |
北京矿冶研究总院 |
| Chang Yaochao |
北京矿冶研究总院 |
| Wang Yun |
北京矿冶研究总院 |
| Wei Qijin |
北京矿冶研究总院 |
| Hu Yihang |
北京矿冶研究总院 |
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| Abstract: |
| Raw ore roasting-cyaniding leaching process was proposed to treat magnesian carbonate rock type micro-disseminated refractory gold deposits. Gold content in residue can be decreased to 1.92 g/t with gold leaching rate of 94.90% under the optimum conditions including size of raw ore of -0.074 mm of 80%, roasting temperature of 650 ℃, roasting time of 1 h, calcining size of -0.038 mm of 90%, NaCN dosage of 3kg/t, L/S=2, and leaching time of 36 h. Economical analysis on 300 t/d raw ore roasting-cyaniding leaching project indicates a desirable financial performance. |
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