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PHYSICO-CHEMICAL STUDIES OF THE PROCESS OF OBTAINING BISHOFITE FROM RAPE OF LAKES KARAUMBET AND BARSAKELMES

The process of obtaining bischofite from Karaumbet and Barsakelmes brine by its two-stage steaming with an intermediate release of sodium chloride was studied. At the same time, calcium and sulfate ions of brine have been removed by precipitation with soda ash and its waste - distiller liquid. The individuality of magnesium chloride hexahydrate has also been confirmed by X-ray and IR spectroscopic methods of analysis. The composition and quality of 6-aqueous magnesium chloride meets the requirements of State Standard 7759-73 for commercial bischofite.