A Direct Reduction Zinc Process
Todd, Lamar S.
The direct production of metal from a sphalerite concentrate is an attractive route for primary zinc. A series of operations and conditions have been selected to efficiently cause the following overall exothermic reaction. The process uses a continuous circulation of molten copper for material and energy transfer between the unit operations. Sulfide concentrate is reduced with an excess of superheated copper to make a copper alloy and white metal. The alloy is stripped of volatile metals under vacuum and some metals can be separately condensed. The residual copper and the white metal are fed into a copper converter to be blown with oxygen for desulfurizing and the superheated copper is recycled. The paper will include a detailed material flow sheet for the process, discussion of the operating conditions of the individual units, behavior of minor elements, and zinc quality.
L. S. Todd et al., "A Direct Reduction Zinc Process," EPD Congress 1999 Proceedings, The Minerals, Metals & Materials Society (TMS), Jan 1999.
EPD Congress 1999
Materials Science and Engineering
Article - Conference proceedings
© 1999 The Minerals, Metals & Materials Society (TMS) , All rights reserved.
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