INVESTIGATION OF THE PURIFICATION PROCESS OF THE SALT OF THE SOZAK DEPOSIT FROM INORGANIC IMPURITIES AND THE RELEASE OF LITHIUM

Abstract

Global salt production reached a new record of more than 330 million tons in 2019. Asia is the largest consumer of sodium chloride of all regions, with more than 160 million tons in 2019. This is due to the regional chemical and industrial sectors, as well as the size of the population. Global chlorine production is projected to grow from 72.9 million tons in 2018 to 98 million tons in 2028, or an average of 25.1 million tons, about 3% per year. Therefore, it is advisable to study methods for cleaning table salt for further introduction into production to meet the needs of the world market in high-purity sodium chloride.

Phase equilibria of water-salt systems of solutions of saturated food salt in the presence of impurities of chlorides and sulphates of Ca and Mg at temperatures of 100-108.5°C were studied and areas of crystallization of sodium chloride were found. Methods for cleaning NaCl have been developed and lithium separation.