Development of a Quasi-chemical Viscosity Model for Fully Liquid Slags in the Al_2O_3-CaO-'FeO'-MgO-SiO_2 System. Part 1. Description of the Model and Its Application to the MgO, MgO-SiO_2, Al_2O_3-MgO and CaO-MgO Sub-systems

摘要

A structurally-based quasi-chemical viscosity model for fully liquid slags in the Al_2O_3-CaO-'FeO'-MgO-SiO_2 system has been developed. The model links the slag viscosities to the internal structures of the melts through the concentrations of various Si_(0.5)O, Me_(2)~(n+)O and Me_(1)~(n+)Si_(0.25)O viscous flow structural units. The concentrations of these structural units are derived from a quasi-chemical thermodynamic model of the system. The model described in this series of papers enables the viscosities of liquid slags to be predicted within experimental uncertainties over the whole range of temperatures and compositions in the Al_2O_3-CaO-MgO-SiO_2 system.