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| Technology Study on Recovery of Valuable Metals from High Arsenic and Sulfur Bearing Gold Concentrates |
| Received:March 11, 2016 Revised:March 11, 2016 |
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| DOI：doi：10.3969/j.issn.1007-7545.2016.08.012 |
| KeyWord:two-stage roasting; arsenic; sulfur; cyaniding; refractory gold ore |
| Author | Institution |
| SUN Cong |
北京矿冶研究总院 |
| LIN Ming-guo |
辽宁新都黄金有限责任公司 |
| LIU Da-xue |
北京矿冶研究总院 |
| GUO Chi-hao |
北京矿冶研究总院 |
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| Abstract: |
| Valuable metals were recovered from high sulfur and arsenic bearing refractory gold concentrates by two stage roasting, acid leaching, regrinding, and cyaniding. The results show that leaching rate of gold and silver is 90.86% and 56.95% respectively upon first-stage roasting at 550 ℃ for 60 min, second-stage roasting at 700 ℃ for 60 min, and cyanide leaching for 48 h under the conditions of acid leaching slag grinding to 0.038 mm accounting for 70% and dosage of sodium cyanide of 6 kg/t. |
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