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Extracting Copper from Mixed-Type Copper Ores

     

Method for Extracting Copper from Mixed-Type Copper Ores:

The method for extracting copper from mixed-type copper ore deposits involves utilizing sulfide copper ores and oxide copper ores as raw materials. The process involves breaking down these ores into suitable sizes. Oxidized copper ores are directly treated using bacterial leaching, while the oxides are first washed and screened before being separately processed into slimes and sand. These fractions undergo agitated leaching and bacterial leaching. The leach solutions are then subjected to solvent extraction, with a portion being recirculated back for continued bacterial leaching to maintain acid balance, and the remaining portion being used for further processing of slimes and sands. This wet metallurgical approach avoids traditional grinding and roasting steps, making it cost-effective and environmentally friendly.

The process yields high copper recovery rates of 80% from sulfide copper ores and 93% from oxide copper ores. It is characterized by low costs, minimal capital investment, and minimal environmental impact, offering a sustainable solution for regions with mixed-type copper ore resources. This method provides a new development opportunity for the metallurgical industry in such areas.

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