A process for the preparation of chemical from copper Minerals / ores using physical and chemical methods.

Abstract

The invention relates to the chemical extraction of copper from copper sulfide ores by thermo-chemical methods, involving roasting with additive and acid leaching processing, the pulverized ore was subjected to roasting with ammonium salt in gas fired furnace at temperature up to 550°C for three hours, the material produced was treated with 2.5 percent of sulfuric acid which renders the copper mass soluble in 110 minutes, the subsequent leaching of roasted material achieved 72-75 percent extraction of copper.