METHOD FOR PRODUCING COPPER CONCENTRATES FROM COMPLEX COPPER ORE

摘要

The present invention relates to a method for concentrating complex copper ore. The method for concentrating complex copper ore according to an embodiment of the present invention comprises: a sizing step of sizing complex copper ore which contains gangue mineral and copper-containing mineral and was completely crushed and pulverized in order to separate the complex copper ore into products which have a particle size larger than the first standard particle size and products which have a particle size smaller than the first standard particle size; a first concentrate manufacturing step of manufacturing copper concentrates which includes a first copper leaching step of leaching copper in the copper-containing mineral by acid-leaching the products which have a particle size larger than the first standard particle size, a copper precipitating step of putting a sulfide precipitator into an ore solution in which copper is precipitated so as to form copper sulfide, and a first copper separating step of sizing the copper sulfide based on the second standard particle size less than the first standard particle size in order to separate copper sulfide; and a second concentrate manufacturing step of manufacturing copper concentrates which includes a second copper leaching step of leaching copper in the copper-containing mineral by acid-leaching the products which have the particle size smaller than the first standard particle size in the sizing step, a copper depositing step of putting a reducing agent, which is ionized better than copper and has magnetism, into the ore solution in which copper is leached in order to deposit copper on the surface of the reducing agent through a cementation action, a magnetism selecting step of separating magnetic materials in the ore solution through magnetism selection after the copper depositing step, and a second copper separating step of separating copper by floating copper in the ore solution through floatation of the magnetic materials separated in the magnetism selecting step and by sinking the reducing agent in the ore solution.