Calculation of phase equilibria of ternary additive molten salt systems with a common anion

Abstract

Phase diagrams for ternary additive systems LiF + NaF + KF, LiF + NaF + CaF<inf>2</inf>, LiF + NaF + SrF<inf>2</inf> and NaF + KF + SrF<inf>2</inf> have been calculated a priori using a set of readily available physical parameters for each component. The method of calculation is based on a simple ion-interaction model developed for binary molten salt systems and now extended to ternary additive salt mixtures. Calculated and experimentally derived phase diagrams are compared and discussed.