Heat of Fusion of Na 3 AlF 6  Eutectic Mixtures with CaF 2  and Al 2 O 3

Alexander A. Redkin; Svetlana V. Pershina; Evgenia A. Il'ina; Alexander A. Kataev; Yurii P. Zaikov

doi:10.15826/chimtech.2019.6.3.03

Heat of Fusion of Na₃AlF₆ Eutectic Mixtures with CaF₂ and Al₂O₃

Alexander A. Redkin, Svetlana V. Pershina, Evgenia A. Il'ina, Alexander A. Kataev, Yurii P. Zaikov

Abstract

The heat of fusion of eutectic mixtures of sodium cryolite with alumina and calcium fluoride was measured using differential scanning calorimetry. Melting temperatures were found to be in good agreement with literature data. The molar heat of fusion of cryolite salts and eutectic mixtures was found to be directly dependent on melting temperature. The temperature dependence coefficient is the same as that of alkali halides.

Keywords

heat of fusion; melting point; cryolite; heat balance; differential scanning calorimetry

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References

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DOI: https://doi.org/10.15826/chimtech.2019.6.3.03

Copyright (c) 2019 Alexander Redkin, Svetlana Pershina, Evgenia Il'ina, Alexander Kataev, Yurii Zaikov