The Intec Copper Process is a proven, patented hydrometallurgical process for the extraction of pure copper and precious metals from sulfide concentrates.
The process is based on the electrolytic deposition at the cathode of LME (London Metal Exchange) Grade A purity copper from a purified sodium chloride-sodium bromide electrolyte. During electrowinning, the mixed halide species BrCl2- (HalexTM) is generated in solution at the anode and exhibits powerful leaching characteristics when it is re-circulated to treat incoming concentrate feed.
The Intec Copper Process has been developed and proven over the last ten years at a cost of US$16 million.
Development commenced at bench scale, progressed through to a continuous 50 kg-Cu per day pilot plant and was subsequently proven in a 350 tpa-Cu demonstration plant. Accordingly, design methodologies, materials of construction and process control have all been validated. Following a thorough review, H.G. Engineering of Toronto, Canada, has concluded that the Intec Copper Process is suitable for commercial application.
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