The vacuum distillation of aluminum from Si-Fe-Al ternary alloy with high
content of Al is studied by a molecular interaction volume model (MIVM) in
this paper. The vapor-liquid phase equilibrium of the Si-Fe-Al system in
vacuum distillation has been calculated using only the properties of pure
components and the activity coefficients. A significant advantage of the
model lies in its ability to predict the thermodynamic properties of liquid
alloys using only binary infinite dilution activity coefficients. The
thermodynamic activities and activity coefficients of components of the
related Si-Fe, Si- Al and Fe-Al binary and the Si-Fe-Al ternary alloy systems
are calculated based on the MIVM. The computational activity values are
presented graphically, and evaluated with the reported experiment data in the
literature, which shows that the prediction effect of the proposed model is
of stability and reliability.
Calculation of vapor-liquid equilibrium of binary precious metal alloys using modified molecular interaction volume model
