JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Print ISSN : 0021-9592
Materials Engineering and Interfacial Phenomena
Reactive Crystallization of Lithium Carbonate in the Presence of Magnesium Impurity
Takashi MikamiTadashi Koseki
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2017 Volume 50 Issue 4 Pages 309-314

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Abstract

Semi-batch and batch-wise reactive crystallization of Li2CO3 was carried out in the presence of magnesium chloride. Magnesium impurity restrained crystal growth, and modified the crystal shape as well as crystal size distribution. However, the added magnesium impurity was usually contained in the product crystals. There was an optimal range for the amount of magnesium impurity. In this study, the influence of temperature was also investigated. In general, the solubility of lithium carbonate decreases with temperature, and it is higher than other sparingly soluble compounds such as CaCO3 and BaSO4. In this study, higher temperatures (70°C and above) were better for obtaining homogeneous crystals because higher supersaturation was possible.

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© 2017 The Society of Chemical Engineers, Japan
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