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| Leaching Kinetics on Enhancing Process to Extract Vanadium from Stone Coal by Mechanical Activation |
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Received:December 23, 2013
Revised:December 26, 2013
Accepted:December 27, 2013
Published Online:June 23, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.07.009 |
| KeyWord:mechanical activation; stone coal; vanadium; leaching; kinetics |
| Author | Institution |
| Liu Juan |
武汉科技大学资源与环境工程学院;武汉科技大学资源与环境工程学院 |
| Zhang Yimin |
武汉科技大学资源与环境工程学院 |
| Huang Jing |
武汉科技大学资源与环境工程学院 |
| Liu Tao |
武汉科技大学资源与环境工程学院 |
| Huang Xianbao |
武汉科技大学资源与环境工程学院 |
| Ma Hao |
武汉科技大学资源与环境工程学院 |
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| Abstract: |
| The leaching dynamics before and after mechanical activation were studied through investigating effects of leaching temperature and sulfuric acid concentration on vanadium extraction from stone coal. The results indicate that apparent activation energy for non activated ore is 23.49 kJ/mol and reaction series is 2.62, and the according parameters decrease to 16.85 kJ/mol and 2.17 after 20 min mechanical activation. Mechanical activation could contribute to increase of surface energy so as to reduce dependence of leaching process on temperature and acidity. |
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