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| Study on Leaching of Rare Earth from Middle-low Grade Collophanite with Hydrochloric Acid |
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Received:October 08, 2013
Revised:October 10, 2013
Accepted:October 11, 2013
Published Online:March 31, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.04.013 |
| KeyWord:hydrochloric acid; phosphorite; rare earth (RE); leaching rate |
| Author | Institution |
| Zhao Lijun |
贵州省冶金化工研究所 |
| Nie Dengpan |
贵州省冶金化工研究所 |
| He Hao |
贵州省冶金化工研究所 |
| Wang Zhenjie |
贵州省冶金化工研究所 |
| Xue An |
贵州省冶金化工研究所 |
| Wu Subin |
贵州省冶金化工研究所 |
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| Abstract: |
| Zhijin collophanite from Guizhou province was leached by hydrochloric acid. The effects of hydrochloric acid concentration, time, ratio of acid to collophanite and temperature on leaching rate of rare earth (RE) were studied. The results show that RE leaching rate is 98% above under the optimum conditions including hydrochloric acid concentration of 11 mol/L, reaction time of 120 min, ratio of acid to collophanite of 2∶1, and reaction temperature of 50 ℃. |
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