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Correlations of electrical conductivity to slag composition and temperature

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Abstract

The electrical conductivity of slags is an important factor in the design of electric smelting furnaces. Although there are many experimental studies on this subject, as yet there are no quantitative correlations of conductivity to slag composition and temperature. The objective of this work was to develop such correlations, on the basis of the experimental data by various other authors. The results show that in the concentration range of industrial-type SiO2-CaO-MgO-MnO slags the slag conductivity can be expressed as a linear function of the molar concentrations of the basic oxides; in the concentration range of industrial nonferrous slags, where the iron oxide content is usually over 20 pct, the slag conductivity can be expressed as an exponential function of the molar concentrations of the iron and basic oxides. The effect of temperature on slag conductivity, in the industrial range of interest, can be accounted for by means of an Arrhenius-type of equation.

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Authors and Affiliations

  1. Henry Krumb School of Mines, Columbia University, 10027, New York, NY

    Q. Jiao (Doctoral Fellow) & N. J. Themelis (Professor of Mineral Engineering)

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  1. Q. Jiao
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  2. N. J. Themelis
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Jiao, Q., Themelis, N.J. Correlations of electrical conductivity to slag composition and temperature. Metall Trans B 19, 133–140 (1988). https://doi.org/10.1007/BF02666499

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