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| Purification of Lithium Carbonate by Carbonation-Decomposition Method |
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Received:November 08, 2017
Revised:November 09, 2017
Accepted:November 14, 2017
Published Online:March 20, 2018
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| DOI：doi：10.3969/j.issn.1007-7545.2018.04.010 |
| KeyWord:lithium carbonate; carbonization-decomposition; purification |
| Author | Institution |
| ZHOU Xiao-dong |
中南大学 |
| YE Hua |
中南大学 |
| SUN Ming-cang |
中南大学 |
| CHEN Wu-jie |
中南大学 |
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| Abstract: |
| Lithium carbonate crude product was purified by carbonation-decomposition method. Lithium carbonate dissolves into water under the conditions of L/S=15/1 and aeration time 40 min with flow rate of 0.5 L/min. Recovery of lithium is 85.74% and Li2CO3 purity meets the standard of battery grade lithium carbonate under the optimum carbonization conditions including reacting temperature of 90 ℃, reacting time of 1 h, and continual evacuation of CO2. Mother liquid of LiHCO3 can be circulated by at most 5 times. |
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