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Equilibrations of copper matte and fayalite slag under controlled partial pressures of SO2

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Abstract

Equilibrium distributions of Cu, S and O between silica saturated fayalite slags and copper mattes (25 to 79 pct Cu) have been examined experimentally under controlled partial pressures of SO2. The temperature range of the experiments was 1423 to 1573 K and pSO2 was varied between 0.1 and 1 atm. Concentrations of copper in the experimental slags were found to be low (<1 pct Cu) under these conditions, as long as the grade of the coexistent matte was below 60 pct copper. Copper in slag concentration rose dramatically, however, when matte grade was increased above this level. The work also showed that whereas FeS has a high solubility for oxygen and is itself soluble in slag under oxidizing conditions, Cu2S and slag are almost completely immiscible. Cu-Fe-S mattes behave in an intermediate manner.

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Authors and Affiliations

  1. Metallurgical Research Institute, University of Michoacan, Mexico

    Francisco J. Tavera

  2. Department of Mining and Metallurgical Engineering, McGill University, H3A287, Montreal, Quebec, Canada

    William G. Davenport (Professor)

Authors
  1. Francisco J. Tavera
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  2. William G. Davenport
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Formerly graduate student with the Department of Mining and Metallurgical Engineering, McGill University.

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Tavera, F.J., Davenport, W.G. Equilibrations of copper matte and fayalite slag under controlled partial pressures of SO2 . Metall Trans B 10, 237–241 (1979). https://doi.org/10.1007/BF02652468

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  • DOI: https://doi.org/10.1007/BF02652468

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