Preparation of useful MgCl2. solution with subsequent recovery of KCl from carnallite

摘要

This invention outlines a process to beneficiate carnallite ores in such a way as to obtain anhydrous MgCl2 of sufficient purity to be used as feed for an electrolysis cell producing magnesium metal. Commercially acceptable potassium chloride as also recovered. The organic solvents and the anhydrous ammonia used to obtain the beneficiation of these carnallite materials are recovered for recycle in the process.