ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

The liquidus curves of lithium cryolite in the Li₃AlF₆-CaF₂, Li₃AlF₆-SrF₂, and Li₃AlF₆—BaF₂ systems and their thermodynamic analysis

I. Koštenská, J. Vrbenská, and M. Malinovský

Institute of Inorganic Technology, Slovak Technical University, 880 37 Bratislava

Abstract: The liquidus curves of  Li₃AlF₆ in the system Li₃AlF₆ —MeF₂ (Me = Ca, Sr, Ba) were determined by means of the ТА method and the x-ray phase analysis. All three investigated systems were found to be the simple eutectic systems, the co-ordinates of the corresponding eutectic points being: 40 ± 1 mole % CaF₂ , 715 ± 2°C; 55 ± 1 mole % SrF₂ , 620 ± 2°C and 45 ± 1 mole % BaF₂ , 665 ± 2°C. In the temperature interval 782 —720°C, the liquidus curves of Li₃AlF₆ in the systems Li₃AlF₆ — CaF₂ and Li₃AlF₆— SrF₂ were found to correspond to the model of strictly regular (one-parameter) solutions whilst in the. system  Li₃AlF₆ —BaF₂ it corresponded to the model of two-parameter regular solutions.

Full paper in Portable Document Format: 273a296.pdf

Chemical Papers 27 (3) 296–300 (1973)