Solubilities, Vapor Pressures, Densities, and Viscosities of the (Water + Lithium Bromide + Lithium Iodide + Lithium Chloride) System

Abstract

Measurements of thermophysical properties of the (water + lithium bromide + lithium iodide + lithium chloride) system (LiBr:LiI:LiCl = 4.5:1:2 by mole ratio) were performed as functions of concentration and temperature. Solubilities were measured by a visual polythermal method at temperatures from (248.59 to 350.46) K. Regression equations were obtained with a least-squares method, and the average absolute deviations of the calculated values from the experimental data were 0.10% (solution temperature < 284.59 K) and 0.12% (temperature ≥ 284.59 K), respectively. The vapor pressures were measured by a boiling point method at lithium salts concentrations from (50.0 to 70.0) mass % and temperatures from (318.36 to 455.75) K. The experimental data were correlated with an Antoine-type equation. The average absolute deviation of the calculated values from the experimental data was 1.83%. Densities and viscosities were measured at concentrations from (50.0 to 64.0) mass % and temperatures from (283.15 to 333.15) K. Regression equations for densities and viscosities were obtained with a least-squares method, and the average absolute deviations of the calculated values from the experimental data were 0.08% and 0.87%, respectively.