Solubility of Li2 S in LiCl ‐ KCl Melts

Abstract

The solubilities of in hypereutectic melts between 745 and 827 K, in hypoeutectic melts between 732 and 821 K and in eutectic melts between 681 and 862 K have been measured by an optical technique. In this technique the progress of dissolution with increase in temperature was monitored by observing the sample piece with a stereo‐optical microscope. The solubilities in the hypereutectic, hypoeutectic, and eutectic melts are respectively given by the following equationsAt higher temperatures (>862 K), additional measurements were made in these melts using a differential thermal analysis technique (DTA). In each case, the data obtained by the optical and DTA techniques were combined to present a pseudobinary equilibrium phase diagram of the and system. Neither of the three systems form any compounds and can be represented by only a liquidus.