|
| Pretreatment of Low Temperature Roasting for Refractory Gold Ore |
|
Received:September 15, 2012
Revised:September 19, 2012
Accepted:September 19, 2012
Published Online:March 22, 2013
|
| View Full Text View/Add Comment Download reader |
| DOI：10.3969/j.issn.1007-7545.2013.04.011 |
| KeyWord:refractory gold ore; low temperature roasting; leaching rate; pretreatment; calcium oxide |
| Author | Institution |
| wangrui |
贵州大学材料与冶金学院 贵阳 |
| tangdaowen |
贵州大学材料与冶金学院 贵阳 |
| yangcong |
贵州大学材料与冶金学院 贵阳 |
|
| Hits: 2331 |
| Download times: 2128 |
| Abstract: |
| The direct gold leaching rate of one refractory gold ore in Guizhou Province was about 15%. Refractory gold ore is usually pretreated with roasting at 650 ℃ plus. In order to improve the gold leaching rate, the gold ore was pretreated with low temperature roasting with addition of calcium oxide, and the effects of roasting temperature, dosage of calcium oxide and roasting time on gold leaching rate were investigated. The results show that the gold leaching rate is over 85% under the optimum pretreatment conditions including roasting temperature of 600 ℃, dosage of calcium oxide of 17.5%, and roasting time of 1.5 h. |
| Close |