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| Study on Leaching of Refractory Gold Ore with Sodium Hypochlorite |
| Received:October 08, 2012 Revised:October 10, 2012 |
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| DOI：10.3969/j.issn.1007-7545.2013.04.012 |
| KeyWord:refractory gold ore; sodium hypochlorite; leaching |
| Author | Institution |
| Yang Cong |
贵州大学 材料与冶金学院 |
| Jin Keqin |
贵州大学 材料与冶金学院 |
| Tang Daowen |
贵州大学 材料与冶金学院 |
| Wang Rui |
贵州大学 材料与冶金学院 |
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| Abstract: |
| One refractory gold ore in Guizhou Province was leached with sodium hypochlorite. The effects of concentration of sodium hypochlorite, leaching time and temperature on leaching rate of gold were investigated. The results show that sodium hypochlorite not only oxidizes FeAsS and FeS2 in gold ore, but also opens the encapsulated gold. The leaching rate of gold is above 75% under the following optimum conditions including concentration of sodium hypochlorite of 0.6 mol/L, pH of 13~14, ratio of liquid to solid of 6, leaching time of 4 h, and temperature of 35 ℃. |
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