SODIUM CHLORIDE IN PROVIDING AQUEOUS SOLUTIONS OF COPPER SALTS FROM COPPER ORE

摘要

A process for preparing aqueous solutions of copper salts from low-grade copper ores by admixing the ore with sodium chloride, roasting the ore-sodium chloride admixture at an elevated temperature, extracting the roasted admixture with a leaching solution saturated with respect to sulfur dioxide and containing sodium chloride, and separating therefrom an aqueous solution containing a soluble copper salt. The solution of copper salt so prepared is suitable for further chemical processing to prepare a variety of copper salts or pure copper metal.