Abstract
The rate of the transfer of sulphur across a slag-metal interface was studied at the temperature range from 1440° to 1570°C. Radioactive sulphur, S35, was used to improve the accuracy of the experiment. The net rate of transfer of sulphur from metal to slag increases with increasing basicity of the slag and with rising of temperature. This is ascribed to the fact that the rate of transfer of sulphur from metal to slag increases rapidly with increasing basicity of slag and with rising of temperature, while that from slag to metal does not change appreciably with changes in slag composition and temperature. In the case of high viscosity slags, the rate of the transfer of sulphur was interpreted by the assumption that the transfer is a reaction of the first order, but this assumption was inadequate for the experimental results on low viscosity slags.The rate of the transfer of sulphur seems to be affected remarkably by side reaction.
