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| Test of Recovery of Valuable Metals from High Arsenic-bearing Gold Concentrate |
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Received:November 10, 2014
Revised:November 12, 2014
Accepted:November 14, 2014
Published Online:March 23, 2015
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| DOI：10.3969/j.issn.1007-7545.2015.04.011 |
| KeyWord:high arsenic-bearing gold concentrate; two-stage roasting; acid leaching; cyaniding; gold; copper |
| Author | Institution |
| huang hai hui |
北京矿冶研究总院 |
| xu xiao hui |
北京矿冶研究总院 |
| wang yun |
北京矿冶研究总院 |
| yuan chao xin |
北京矿冶研究总院 |
| guo chi hao |
北京矿冶研究总院 |
| chang yao chao |
北京矿冶研究总院 |
| sun liu gen |
北京矿冶研究总院 |
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| Abstract: |
| Valuable metals were recovered from high arsenic-bearing gold concentrate by processes of two-stage roasting, acid leaching, and cyanide leaching. The results show that copper leaching rate is 82.44% under the optimum conditions including first-stage roasting temperature of 550 ℃, second-stage roasting temperature of 630 ℃, acid leaching time of 90 min and terminal pH value of 1.0. Acidic leaching residue is cyanide leached with gold leaching rate of 90.98% under the conditions including grain size of 88.9% -0.039 mm, dosage of sodium cyanide of 6 kg/t, and cyanide leaching time of 48 h. |
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