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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received December 3, 2013
Accepted January 27, 2014

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Metastable equilibrium for the quaternary system containing with lithium+potassium+magnesium+chloride in aqueous solution at 323K

Xudong Yu¹ Qinghong Yin¹ Dongbo Jiang¹ Ying Zeng^{1 2†}

¹College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, P. R. China ²Mineral Resources Chemistry Key Laboratory, Sichuan Higher Education Institutions, Chengdu 610059, P. R. China

Korean Journal of Chemical Engineering, June 2014, 31(6), 1065-1069(5), 10.1007/s11814-014-0034-2

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Abstract

The metastable equilibrium of the system contained with lithium, potassium, magnesium, and chloride in aqueous system was investigated at 323 K using an isothermal evaporation method. The isothermal experimental data and physicochemical properties, such as density and refractive index of the equilibrated solution, were determined. With the experimental results, the stereo phase diagram, the projected phase diagram, the water content diagram and the physicochemical properties versus composition diagrams were constructed. The projected phase diagram consists of three invariant points, seven univariant curves and five crystallization fields corresponding to single salts potassium chloride (KCl), lithium chloride monohydrate (LiCl·H2O), bischofite (MgCl2·6H2O) and two double salts lithium carnallite (LiCl·MgCl2·7H2O) and potassium carnallite (KCl·MgCl2·6H2O). Salt KCl has the largest crystallization region; it contains almost 95% of the general crystallization field.

Keywords

Phase Equilibrium Lithium Potassium Double Salt Solubility

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