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| Column Leaching of Zinc Oxide Ore in NH3-NH4Cl-H2O System |
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Received:May 21, 2013
Revised:May 23, 2013
Accepted:May 24, 2013
Published Online:October 25, 2013
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| DOI：10.3969/j.issn.1007-7545.2013.11.002 |
| KeyWord:zinc oxide ore; NH3-NH4Cl-H2O system; column leaching |
| Author | Institution |
| 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 |
| Zeng Bin |
江西理工大学 冶金与化学工程学院 |
| Wang Zhi-gang |
中国瑞林工程技术有限公司 |
| Ruan Jian-guo |
中国瑞林工程技术有限公司 |
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| Abstract: |
| Zinc oxide ore was column leached in NH3-NH4Cl-H2O system. The results show that the leaching rate of zinc is 92.19% and zinc ion concentration in leachate is 54.38 g/L under the conditions including ore particle size of 0.1~10 mm, double column series operation, ore loading in first column of 2 629 g and 1 314 g in second column, total ammonia concentration of 7.5 mol/L, NH4Cl/NH3=2∶1, and leaching time of 30 days. Compared with the results of bottle leaching, zinc leaching rate of column leaching is improved by about 4 percent point and zinc ion concentration in leachate is improved by about 11 g/L. |
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