METHOD OF PRODUCTION OF POTASSIUM CHLORIDE FROM THE SPENT ELECTROLYTE OF MAGNESIUM PRODUCTION Russian patent published in 1998 - IPC

FIELD: chemical technology, inorganic chemistry. SUBSTANCE: method involves grinding electrolyte, leaching magnesium chloride and sodium chloride and dehydration. Leaching is carried out with potassium chloride concentrated solution. Firstly, solid phase enriched by potassium chloride is obtained and then this phase is washed out with solution saturated with potassium chloride. Potassium chloride concentrated solution is fed to leaching after solid phase washing out. EFFECT: increased part of KCl in the end product, decreased loss of potassium chloride in process. 3 ex