R. V. Kulumbegov, L. M. Delitsyn, I. A. Belyaev, N. N. Klimenko, A. B. Tarasenko, O. S. Popel’
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Extraction of Lithium from β-Spodumene via Ion Exchange in Molten Sodium Salts
In this paper, we report a process for lithium extraction from spodumene raw materials. We demonstrate that a promising approach for processing spodumene is sintering with sodium acetate. In the reaction between these components, the crystal structure of spodumene remains intact. Ion exchange reaction between CH3СOONa⋅3Н2О and LiAlSi2O6 yields water-soluble sodium acetate and water-insoluble sodium aluminosilicate (NaAlSi2O6). The sodium acetate dissolved in water is converted to lithium carbonate by adding a Na2CO3 solution. The lithium carbonate precipitate is essentially free of foreign impurities. We analyze the effect of process parameters on the degree of Li+ extraction from spodumene.
期刊介绍：
Inorganic Materials is a journal that publishes reviews and original articles devoted to chemistry, physics, and applications of various inorganic materials including high-purity substances and materials. The journal discusses phase equilibria, including P–T–X diagrams, and the fundamentals of inorganic materials science, which determines preparatory conditions for compounds of various compositions with specified deviations from stoichiometry. Inorganic Materials is a multidisciplinary journal covering all classes of inorganic materials. The journal welcomes manuscripts from all countries in the English or Russian language.
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