Estimation of interfacial tensions between phases in the molten iron-slag-inclusion (alumina) system

Abstract

Inclusion separation at the interface is governed by the interfacial properties between phases in the molten iron-slag-inclusion system. The behavior of inclusion separation and assimilation in a slag can be related to the change in the interfacial free energies as the inclusion goes from the immersed state to the separated state. To understand this interfacial phenomena, a model has been developed which permits the calculation of interfacial tensions of the inclusion (alumina)-molten iron, molten iron-slag and slag-inclusion (alumina) systems. This model, which incorporates Girifalco and Good's approach, was tested on these systems. Calculated values obtained from the model show excellent agreement with reported data.