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| Study of Selective Leaching of Copper Tailings from Mineral Processing |
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Received:February 11, 2014
Revised:February 12, 2014
Accepted:February 14, 2014
Published Online:August 21, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.09.002 |
| KeyWord:mineral processing; copper; tailings; NH3-NH4Cl system; selective leaching |
| Author | Institution |
| LU Xing-wu |
西北矿冶研究院冶金新材料研究所，甘肃省有色金属冶炼新工艺及伴生稀散金属高效综合利用重点实验室 |
| SANG Li |
S阳谷祥光铜业有限公司 |
| HE Guo-cai |
西北矿冶研究院冶金新材料研究所，甘肃省有色金属冶炼新工艺及伴生稀散金属高效综合利用重点实验室 |
| LI Yu-liang |
西北矿冶研究院冶金新材料研究所，甘肃省有色金属冶炼新工艺及伴生稀散金属高效综合利用重点实验室 |
| YI Chao |
西北矿冶研究院冶金新材料研究所，甘肃省有色金属冶炼新工艺及伴生稀散金属高效综合利用重点实验室 |
| MA Ai-jun |
西北矿冶研究院冶金新材料研究所，甘肃省有色金属冶炼新工艺及伴生稀散金属高效综合利用重点实验室 |
| CHENG Liang |
西北矿冶研究院冶金新材料研究所，甘肃省有色金属冶炼新工艺及伴生稀散金属高效综合利用重点实验室 |
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| Abstract: |
| Copper was selectively leached from copper tailings from mineral processing with ammonium hydroxide as leaching agent. The effects of particle size, ammonium hydroxide concentration, stirring speed, leaching temperature and time, and ratio of liquid to solid (L/S) on copper leaching rate were investigated. The results show that copper leaching rate is 75% above with impurities barely leached under the optimum conditions including particle size of 0.074~0.105 mm, ammonium hydroxide concentration of 1.1 mol/L, stirring speed of 600 r/min, leaching temperature of (55±2)℃, leaching time of 120 min and L/S=15∶1. |
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