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Lithium carbonate recovery from lithium-containing solution by ultrasound assisted precipitation.
- Source :
-
Ultrasonics Sonochemistry . Apr2019, Vol. 52, p484-492. 9p. - Publication Year :
- 2019
-
Abstract
- Graphical abstract Highlights • Develop a potential pathway for effective lithium recovery from low concentrated lithium-containing solution and preparation of industrial grade Li 2 CO 3. • The global lithium recovery rate reaches 97.4% and Li 2 CO 3 is obtained with a purity of 99.01%. • The ultrasound mechanisms and kinetics of lithium precipitation are investigated. Abstract Lithium carbonate (Li 2 CO 3), one of the most important lithium compounds, is usually prepared from lithium-containing solution. The lithium recovery rate and the purity of Li 2 CO 3 are highly dependent on the lithium concentration. In order to get a high lithium recovery rate, high concentrated lithium-containing solution is required, while the purity of Li 2 CO 3 can be low remaining a significant amount of impurities. Usually, it is not possible to obtain high purity Li 2 CO 3 by single-step precipitation with a relatively high lithium recovery rate especially from a low concentrated lithium-containing solution. In this research, ultrasound is introduced to increase lithium recovery rate and prepare industrial grade Li 2 CO 3. The research found that ultrasound can significantly reduce the polymerization of Li 2 CO 3 crystal particles and promote dissociation of impurity ions. At the same time, ultrasound accelerates the nucleation process of Li 2 CO 3 and boosts lithium recovery rate because of cavitation. The different parameters during the Li 2 CO 3 precipitation process were systematically discussed. Under the optimized conditions, the lithium recovery rate can be increased by 12% with a global lithium recovery rate of 97.4%. Li 2 CO 3 with a purity higher than industrial grade can be obtained by one-step precipitation. It demonstrates a potential pathway for effective lithium recovery from low concentrated lithium-containing solution and preparation of industrial grade Li 2 CO 3. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13504177
- Volume :
- 52
- Database :
- Academic Search Index
- Journal :
- Ultrasonics Sonochemistry
- Publication Type :
- Academic Journal
- Accession number :
- 135915566
- Full Text :
- https://doi.org/10.1016/j.ultsonch.2018.12.025