抄録
Equations to calculate the room temperature density of fused SiO2-MnO-Al2O3 fluxes from their chemical composition were derived. Firstly, the equation based on the additive law was examined using Appen's density factors. For calculation, the chemical composition of the fluxes and the actual density measured by an air picnometer were put into the additive equation with fMnO as an unknowa quantity. Thus the density factor for MnO was detremined as 5.99. Secondly, the multiple regression equation was applied. In this case, the actual density and the chemical composition were treated by a computer to obtain the regression coefficients and the constants. Consequently, the deviation range of the calculated dentity from the actual one was found to be ±0.01g/cm3 both for the additive equation and for the multiple regression equation.
