Abstract
Ausmelt technology opens up new opportunities for the economic processing of complex copper smelter dusts. Not only can the technology separate more of the unwanted elements to produce a clean blister copper for refining, but it can also allow production of fume and precious metal products that can be readily upgraded to produce high-grade, valuable products. Developments in the processing of copper-bismuth-gold flue dusts left over after the smelting of bismuth-bearing concentrates in flash furnaces are described, including pilot-plant trials and process and equipment development. Design considerations and capital and operating costs for the proposed plant are discussed.
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