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| Study on Leaching of Gold-Silver-Copper from Fluidized-bed Roasting Ash |
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Received:September 03, 2013
Revised:September 04, 2013
Accepted:September 05, 2013
Published Online:February 25, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.03.008 |
| KeyWord:acid leaching; cyaniding leaching; fluidized-bed roasting ash; gold; silver; copper |
| Author | Institution |
| ZENG Bin |
江西理工大学冶金与化学工程学院 |
| LAI Zi-qiu |
紫金矿业集团股份有限公司 |
| WANG Rui-xiang |
江西理工大学冶金与化学工程学院 |
| YU Pan |
江西理工大学冶金与化学工程学院 |
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| Abstract: |
| Gold, silver and copper were leached from fluidized-bed roasting ash by sulfuric acid leaching-cyaniding leaching process. The results show that the leaching rate of gold, silver and copper is 97.16%, 79.98% and 96.04% respectively under the following optimal conditions including sulfuric acid concentration of 1.0 mol/L, ratio of liquid to solid of 4∶1, temperature of 90 ℃, reaction time of 4 h and stirring speed of 300 r/min as well as ratio of liquid to solid of 3∶1, sodium cyanide concentration of 0.2%, pH value of 10~11, reaction time of 48 h and stirring speed of 300 r/min in cyaniding leaching. |
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