| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction & Processing
|
| Presentation Title |
A Fundamental Investigation of Li2CO3 Crystallization from Li2SO4 System |
| Author(s) |
Hongting Liu, Gisele Azimi |
| On-Site Speaker (Planned) |
Hongting Liu |
| Abstract Scope |
In this study, the fundamentals of the crystallization process of Li2CO3 from Li2SO4 solution by adding Na2CO3 was investigated. Experimental data indicated that mixing both salt solutions with 2 mol/L initial concentration at 65 °C and 600 rpm agitation speed resulted in 80% lithium recovery from Li2SO4 as Li2CO3 with less than 2 wt% product impurity within 2 h equilibration time. The presence of impurities, i.e., CaSO4 and Na2SO4, in the initial Li2SO4 solution had significant negative impact on both lithium recovery efficiency and purity level of the final Li2CO3 product. Feeding rate of Na2CO3 solution to Li2SO4 solution showed minimal effect on the reaction. Adding seed in the initial Li2SO4 solution resulted in no change of recovery efficiency, but slightly increased impurity level. Seeding with different seed loadings and sizes had a direct effect on the product morphology. Nucleation model of this process was developed based on induction time. |
| Proceedings Inclusion? |
Planned: |