Viscosity Estimations of Multi‐Component Slags

Abstract

Abstract A model for viscosity estimation of molten aluminosilicate slag, which was developed in our previous study, was extended to estimate viscosity of multi‐component slag containing alkali oxide and calcium fluoride in this study. The charge compensations of alkali oxides for Al tetrahedral ions are explicitly taken into account in the equations. The effect of calcium fluoride on the viscosity of slag was modeled by considering Ca‐2F species and no network‐breaking effect of CaF 2 were considered. The present model was applied to estimate the viscosity of slags within Al 2 O 3 ‐CaO‐FeO‐MgO‐SiO 2 ‐CaF 2 ‐Na 2 O‐K 2 O system. A good agreement with a mean deviation of ∼20% was achieved by comparison between estimated and measured values.