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Recovery of copper from converter slags by flotation
Recovery of zinc, copper, and lead-tin mixtures from brass smelter flue dusts
Copper recovery from chalcopyrite by a roast-leach procedure
Oxidation of cement copper by flash roasting
Reactions of copper sulfide minerals with chlorine in an aqueous system
Production of blister copper by electric furnace smelting of dead-burned copper sulfide concentrates