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| Extraction of Lithium, Rubidium and Cesium from Lepidolite by Sulfate Process |
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Received:June 12, 2015
Revised:June 15, 2015
Accepted:June 18, 2015
Published Online:November 18, 2015
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| DOI：doi：10.3969/j.issn.1007-7545.2015.12.008 |
| KeyWord:sulfate; lepidolite; lithium; rubidium; cesium; leaching rate |
| Author | Institution |
| Guo Chunping |
赣州有色冶金研究所 |
| Zhou Jian |
赣州有色冶金研究所 |
| Wen Xiaoqiang |
赣州有色冶金研究所 |
| Pu Jian |
赣州有色冶金研究所 |
| Wang Yuxiang |
赣州有色冶金研究所 |
| Yuan Delin |
赣州有色冶金研究所 |
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| Abstract: |
| Lithium, rubidium and cesium were extracted from lepidolite by sulfate process. The results show that leaching rate of lithium, rubidium and cesium is 92.2％, 61.5％, 63.8% respectively when lepidolite was mixed with 20% potassium sulfate, 10% calcium sulfate and 15% barium sulfate, roasted at 900 ℃ for one hour, and leached with dilute acid. Zero-grade lithium carbonate can be obtained from purified lixivium, and rubidium and cesium can be recovered from mother liquor of lithium precipitation. |
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