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Distribution of sulfur between liquid-iron and the system CaO-MgO-Al2O3

J. Leško and T. Kovalčíková

Institute of Metallurgical Process Theory, Czechoslovak Academy of Sciences, CS-70300 Ostrava


Abstract: The standard reaction Gibbs energies of the distribution of sulfur between Fe(1) and the system CaO-Al2O3 were determined by means of the electrochemical measurement of the oxygen activity in the metal and of the FeO activity in the ionic melt at the temperature of 1600°C. The distribution coefficient of sulfur L(S, exp) is in agreement with the calculated one on the basis of the oxygen activity in the metal and of the optical basicity of the system CaO-MgO-Al2O3. The agreement of L(S, exp) and L(S, calc) shows an ideal behaviour of sulfur in the metal. The activity coefficient  γ(CaS) does not change with the composition.

Full paper in Portable Document Format: 455a577.pdf


Chemical Papers 45 (5) 577–584 (1991)

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