| Abstract: | The rates of many high temperature metallurgical reactions are strongly influenced by interfacial phenomena and to determine reaction rates it is necessary to have an accurate model of interfacial properties. In this article, the factors governing interfacial tension in slag-metal systems will be briefly discussed and, a model based on the combination of the Gibbs and Langmuir adsorption isotherms with Girifalco and Good's expression for the interfacial tension between immiscible liquids, will be shown to be consistent with current literature values and allow the calculation of both the interfacial tension and the contact angle between liquid slags and liquid iron in the CaO–CaF2–SiO2–Al2O3 system. The application of this approach to systems containing FeO in the slag and carbon in the metal are then discussed. |
