MINERAL PROCESSING PLANTS Roasting Smelting Converting Refining Driesoreconcentrate Controlssilicacontent Producescalcine concentrateorcalcine,recycledprecipitates,converterslag, fluxdust,limestone,andsilicaflux Producesblistercopper(%). Chargeismatteandsilicaflux. Producesdomesticcopper(>%)