A Model for Estimating the Viscosity of Molten Aluminosilicate Containing Calcium Fluoride

抄録

A model to estimate the viscosity of aluminosilicate melts including alkali oxides, as derived in our previous study, was extended to molten slag systems containing CaF₂. The bonding state of oxygen in molten silicate and the flow mechanism of melts with a network microstructure were considered for this model. To evaluate the bonding states of oxygen for given chemical compositions, a model proposed by Susa et al. was applied. Their model is easily extended to any multi-component molten slag system without the need to consider thermodynamic parameters. In this work, the above-mentioned viscosity model was applied to evaluate the effect of CaF₂ on the viscosity of molten SiO₂–CaO–CaF₂, SiO₂–CaO–Al₂O₃–CaF₂ and SiO₂–Al₂O₃–CaO–CaF₂–Na₂O–MgO systems.