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Melting Point of Cryolite
Author(s) -
FOSTER PERRY A.
Publication year - 1968
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1968.tb11847.x
Subject(s) - cryolite , melting point , congruent melting , fraction (chemistry) , mass fraction , chemistry , thermodynamics , materials science , mineralogy , analytical chemistry (journal) , metallurgy , phase diagram , aluminium , chromatography , physics , phase (matter) , composite material , organic chemistry
The melting point of ultimate‐purity cryolite was determined by evaluating the liquid fraction r of selected natural mineral samples over the melting range. A plot of the reciprocal of the liquid fraction l/r, as a function of the temperature T from which samples were quenched, gave a straight line that indicates a melting point for the sample of 1009.2°C at l/r = 1 and extrapolates to a value of 1012° f 2°C at l/r = 0 for pure cryolite.