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| Extraction of Li, Rb and Cs from Lepidolite by Sulfuric Acid Curing and Water Leaching |
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Received:December 20, 2018
Revised:December 24, 2018
Accepted:December 26, 2018
Published Online:March 19, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.04.009 |
| KeyWord:lepidolite; sulfuric acid curing; water leaching; lithium; rubidium; cesium |
| Author | Institution |
| Zhang Li-zhen |
中国地质科学院郑州矿产综合利用研究所 |
| Zhang Yong-xing |
中国地质科学院郑州矿产综合利用研究所 |
| Zhang Xiu-feng |
中国地质科学院郑州矿产综合利用研究所 |
| Tan Xiu-min |
中国地质科学院郑州矿产综合利用研究所 |
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| Abstract: |
| Comprehensive extraction of Li, Rb and Cs from lepidolite concentrate by sulfuric acid curing and water leaching was studied. Effects of sulfuric acid concentration, acid-ore ratio, curing temperature, curing time, leaching temperature, and L/S on leaching of Li, Rb and Cs were discussed. The results show that leaching rate of Li, Rb and Cs is 91.42%, 88.83% and 90.09% respectively under the optimum conditions including acid-ore ratio of 1︰1, sulfuric acid concentration of 70%, curing temperature of 120 ℃, curing time of 8 h, leaching temperature of 50 ℃, L/S=4/1, and leaching time of 1 h. |
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