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| Leaching Behaviors of Silver Concentrate in [Bmim]HSO4 Ionic Liquids and Thiourea Solution |
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Received:October 23, 2013
Revised:October 30, 2013
Accepted:November 01, 2013
Published Online:April 22, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.05.010 |
| KeyWord:[Bmim]HSO4 ionic liquid; leaching; thiourea; silver concentrate |
| Author | Institution |
| Fang Xihui |
江西理工大学 |
| Zhong Mingqing |
江西理工大学 |
| Yin Yanfeng |
江西理工大学 |
| Zhang Shuai |
江西理工大学 |
| Chen Dujuan |
西北矿冶研究院 |
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| Abstract: |
| The leaching behaviors of silver concentrate in [Bmim]HSO4 ionic liquids and thiourea solution were studied. The effects of grinding fineness, [Bmim]HSO4 concentration, thiourea and Fe3 concentrations, ratio of liquid to solid, and leaching time on silver leaching rate were investigated. The results show that silver leaching rate is 73.96% under the optimum conditions including particle size of 80% -0.043 mm, thiourea concentration of 0.18 mol/L, [Bmim]HSO4 concentration of 0.3 mol/L, Fe3 concentration of 7.5 mmol/L, ratio of liquid to solid of 3∶1 and leaching time of 18 h. In comparison with cyaniding leaching and sulfuric acid thiourea leaching, the highest silver leaching rate can be achieved in [Bmim]HSO4-thiourea solution with the shortest leaching duration. |
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