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Kinetics of cobalt sulfide reduction in the presence of calcium oxide

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Abstract

Kinetic measurements have been made on the hydrogen reduction of solid cobalt sulfide in the presence of calcium oxide. The cobalt metal yield was compared with that of the direct reduction reaction over the temperature range 600 to 800°C at various hydrogen flow rates, and calcium oxde to cobalt sulfide mixing ratios. It was found that the presence of calcium oxide caused a sharp increase in the reaction rate—for example a 15 fold increase in conversion was achieved at 700°C after 24 min of reaction. Low hydrogen flow rates were found to be desirable, and an optimum mixing ratio of 3.0 established.

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Authors and Affiliations

  1. Department of Chemical Engineering, University of Waterloo, N21 3GI, Waterloo, Ontario, Canada

    J. D. Ford (Associate Professor)

  2. Imperial Oil Enterprises, Ltd., Sarnia, Ontano, Canada

    M. A. Fahim (Research Engineer)

Authors
  1. J. D. Ford
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  2. M. A. Fahim
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Ford, J.D., Fahim, M.A. Kinetics of cobalt sulfide reduction in the presence of calcium oxide. Metall Trans B 6, 461–464 (1975). https://doi.org/10.1007/BF02913833

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  • DOI: https://doi.org/10.1007/BF02913833

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