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| Bio-oxidation-cyanidation of Arsenic/Carbon-bearing Refractory Gold Ores |
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Received:January 21, 2015
Revised:February 10, 2015
Accepted:February 10, 2015
Published Online:June 23, 2015
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| DOI：doi：10.3969/j.issn.1007-7545.2015.07.013 |
| KeyWord:bacterial oxidation; arsenic/carbon-bearing refractory gold ores; leaching rate; cyaniding |
| Author | Institution |
| dongbowen |
低品位难处理黄金资源综合利用国家重点实验室，厦门紫金矿冶技术有限公司 |
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| Abstract: |
| Gold particles in Carlin-type arsenic/carbon-bearing refractory gold ores were encompassed by arsenopyrite under micro/submicroscopic structure. Flotation recovery of gold was 40% below, and gold cyanidation recovery was 5% below. Oxidation rate of sulfur is 95% above and cyanide leaching rate of gold is improved to 93.81% by biooxidation-cyanidation under the optimum conditions including particle size of 81% -0.074 mm, temperature of 30 ℃, slurry pH value of ~1.6, slurry concentration of 20%, and biooxidation duration of 4 days. |
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