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

Calculation of the phase diagrams of multicomponent systems containing cryolite

P. Fellner, M. Chrenková-Paučírová, and K. Matiašovský

Institute of Inorganic Chemistry, Slovak Academy of Sciences, 809 34 Bratislava

Abstract: Liquidus diagrams of the cryolite-based ternary and quaternary systems are calcd. using the estn. of the excess Gibbs energy. The systems LiF-NaF-AlF₃, Na₃AlF₆-Al₂O₃-NaCl, Na₃AlF₆-Al₂O₃-NaCl-CaF₂, and Na₃AlF₆-Al₂O₃-AlF₃-NaCl were investigated. Main attention was paid to the region of primary crystn. of cryolite which is important in electrowinning of Al. In spite of a strong interaction among the components of these melts there is a good agreement between the calcd. and exptl. temps. of primary crystn.

Full paper in Portable Document Format: 306a805.pdf

Chemical Papers 30 (6) 805–812 (1976)