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| Study on Leaching of Lithium from Clay-type Lithium Deposit |
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Received:July 27, 2020
Revised:August 05, 2020
Accepted:August 06, 2020
Published Online:October 31, 2020
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| DOI：doi：10.3969/j.issn.1007-7545.2020.11.007 |
| KeyWord:clay-type lithium deposit; lithium; ferric chloride; leaching |
| Author | Institution |
| ZHU Li |
贵州师范大学 地理与环境科学学院 |
| YANG Yong-qiong |
贵州师范大学 地理与环境科学学院 |
| GU Han-nian |
中国科学院地球化学研究所 地球内部物质高温高压院重点实验室 |
| GUO Teng-fei |
中国科学院地球化学研究所 地球内部物质高温高压院重点实验室 |
| WEN Han-jie |
中国科学院地球化学研究所 矿床地球化学国家重点实验室 |
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| Abstract: |
| Clay-type lithium deposit is a kind of important lithium resources. However, there are relatively few studies on this kind of lithium deposit until present. Ferric chloride solution was used to leach lithium element in carbonate-hosted clay-lithium deposit, and effects of calcination temperature, ferric chloride mass fraction, leaching temperature and reacting time on leaching efficiency of lithium were investigated. The results show that ferric chloride solution has a good selective leaching effect on lithium in sample, and leaching efficiency of lithium is 82.78% under the conditions including calcination temperature of 600 ℃, mass fraction of ferric chloride of 15%, L/S of 5 mL/g, leaching temperature of 80 ℃, reaction time of 240 min, and stirring speed of 240 r/min. XRD and SEM analysis of samples before and after leaching show that leaching of lithium may be the result of exchange of iron ions in ferric chloride solution with lithium ions in clay samples. |
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