Abstract
Activated aluminum powder has been used to extract lithium from Mg-Li mixed solution via a hydrolysis–adsorption reaction. First, activated aluminum powder was prepared under the optimal conditions of NaCl addition of 70%, ball-milling time of 3 h, and ball-to-powder mass ratio of 20:1. Then, the activated aluminum powder was added into the Mg-Li mixed solution to extract lithium. X-ray diffraction analysis indicated that Li+ was adsorbed by freshly formed Al(OH)3 in the form of LADH-Cl [LiCl·2Al(OH)3·mH2O]. Under the optimal conditions of reaction time of 3 h, Al/Li molar ratio of 4:1 for activated aluminum powder addition, and reaction temperature of 70°C, lithium precipitation exceeded 90% while magnesium precipitation was controlled at 13%. These results indicate that activated aluminum powder can efficiently extract lithium from Mg-Li mixed solution via a hydrolysis–adsorption reaction.
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Acknowledgements
This research was supported by the Nature Science Foundation of China (U1407137), the Sheng Hua Yuying Program of CSU, and State Key Laboratory of Powder Metallurgy, Central South University. We thank LetPub (www.letpub.com) for linguistic assistance during preparation of this manuscript.
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Li, Y., Chen, X., Liu, X. et al. Extraction of Lithium from Brine Solution by Hydrolysis of Activated Aluminum Powder. JOM 70, 1449–1453 (2018). https://doi.org/10.1007/s11837-018-2933-x
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DOI: https://doi.org/10.1007/s11837-018-2933-x