Abstract
Recovery of lithium from lithium-rich electrolyte has attracted worldwide attention because of issues from both electrolytic aluminium production and environmental impacts. Lithium carbonate preparation from lithium-rich electrolyte by H2SO4 leaching, removing impurities and lithium precipitation with Na2CO3 was investigated in this work. About 98% Li was leached using 6% H2SO4 at 80 °C for 1 h at a solid to liquid ratio of 1:2. In addition, the Li2SO4 in the leached solution was directly purified to a final pH of 11 with NaOH and 3 g/L EDTA additions. After further precipitation with 290 g/L Na2CO3 at 95 °C for 50 min, 99.5% Li2CO3 was obtained. With this research, it is expected to potentially design processes for lithium-rich electrolyte recycling with high industrial viability.
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Acknowledgements
The authors acknowledge the financial support on this research from National Natural Science Foundation of China (No. U1704154).
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© 2019 The Minerals, Metals & Materials Society
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Wang, W., Chen, W., Li, Y., Wang, K. (2019). Study on Preparation of Lithium Carbonate from Lithium-Rich Electrolyte. In: Chesonis, C. (eds) Light Metals 2019. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05864-7_112
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DOI: https://doi.org/10.1007/978-3-030-05864-7_112
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