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Which copper concentrate treatment process is preferred, Hydro-metallurgical or Pyro-metallurgical ?
I understand it depends on the copper concentrate grade. Pyrometallurgical extraction is the most preferred method particularly for concentrate grades containing 20 - 30% Cu.
I also hear chalcopyrite could be very difficult or almost impossible to process by hydrometallurgical process with a sufficient economical benefits in comparison to pyrometallurgical process.
Based on the technical, economical and environmental views, which one is preferred for treatment of chalcopyrite concentrate in order to copper production of 150000 TPY.