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

Solubility and Rate of Dissolution of Alumina in Cryolite-Based AIF₃-Rich Melts with Additions of LiF, CaF₂, and MgF₂

Ž. Lubyová, P. Fellner, and J. Gabčová

Institute of Inorganic Chemistry, Slovak Academy of Sciences, CS-842 36 Bratislava

Abstract: Equilibrium solubility of alumina in the cryolite melts containing 26 mass % excess AIF₃ and additions of LiF (up to 7 mass %), CaF₂ (3.5 mass %), and/or MgF₂ (up to 10 mass %) was determined. Rate of dissolution of alumina in the melts of given composition was investigated. It was found that the experimental data can be described by a hyperbolic relationship with two adjustable parameters. One parameter corresponds to the equilibrium solubility of alumina in the melts. The other parameter characterizes the used alumina, temperature, and composition of the melt.

Full paper in Portable Document Format: 474a218.pdf

Chemical Papers 47 (4) 218–220 (1993)