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Chalcopyrite is the most abundant copper mineral in nature.Due to high capital costs associated with smelting and the limited ability of smelters to handle growing concentrations of As and Sb, in recent years the metallurgical industry has been searching for a hydrometallurgical process as an alternative to pyrometallurgical treatment due to some inherent advantages associated with hydrometallurgical processing, such as the possibility of treating low-grade ores (increasingly more abundant in the case of copper) and easier control of waste.Most of the currently proposed processes are based on sulfuric acid with ferric ions and/or dissolved oxygen as oxidants.