The Equilibrium Distribution Coefficient and Its Derivation from TX Solid-Liquid Equilibrium Diagrams

Abstract

It is shown that in a binary system, in which the components form a series of mixed crystals, the equilibrium distribution coefficient at infinite dilution can be derived from the solid-liquid equilibrium diagram. For that purpose an expression is derived that relates the coefficient to the termodynamic properties of the system. The latter, in turn, are related to the solid-liquid equilibrium diagram by means of the equal-G curve. The practical operation of the method is illustrated with a number of examples for existing systems.