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| Study on High-efficient Leaching of Lithium from Clay-type Lithium Ore |
| Received:March 22, 2021 Revised:March 29, 2021 |
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| DOI：doi：10.3969/j.issn.1007-7545.2021.09.006 |
| KeyWord:clay- type lithium ore；lithium ；roasting；leaching |
| Author | Institution |
| XU Lu |
中国地质科学院矿产综合利用研究所 |
| HUI Bo |
中国地质科学院矿产综合利用研究所 |
| GONG Da-xing |
中国地质科学院矿产综合利用研究所 |
| LAI Yang |
中国地质科学院矿产综合利用研究所 |
| TIAN En-yuan |
中国地质科学院矿产综合利用研究所 |
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| Abstract: |
| Lithium was leached from clay-type lithium ore with Li2O grade of 0.64% by roasting-acid leaching. Effects of roasting time and temperature on Li2O leaching rate were investigated. Effects of leaching temperature and time, sulfuric acid concentration, and ratio of liquid to solid (L/S) on Li2O leaching rate in acid leaching process were investigated by orthogonal test. The results show that Li2O leaching rate is 92.97% under the optimum conditions including roasting time of 30 min, roasting temperature of 600 ℃, leaching temperature of 90 ℃, leaching time of 30 min, sulfuric acid concentration of 1.5 mol/L, and L/S=6. |
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