METHOD FOR LEACHING OUT COPPER FROM COPPER SULFIDE ORE CONTAINING COPPER PYRITE

摘要

PROBLEM TO BE SOLVED: To provide an efficient method for leaching out copper from copper sulfide ores containing copper pyrite at increased leaching rate and at high leaching rate.

SOLUTION: The method is for leaching out copper from copper sulfide ores containing copper pyrite by using an aqueous solution of iron sulfate. For example, in the method for leaching out copper from copper sulfide ores, a mixture consisting of the above copper sulfide ores and powdered carbon in an amount of≥1.0 wt.% based on copper minerals in the copper sulfide ores is immersed in the aqueous solution of iron sulfate having 1 to 20 g/L iron concentration and 1.0 to 2.5 pH value and also having oxidation/reduction potential (on the basis of Ag/AgCl electrode) regulated to 350 to 450 mV.

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