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Density of Low-Temperature KF-AlF3 Aluminum Baths with Al2O3 and AlPO4 Additives

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Abstract

The density of the KF-AlF3 melts of various KF and AlF3 ratio with Al2O3 and AlPO4 addition has been measured using the Archimedean method. On the basis of the obtained density data the molar volumes of the melts were calculated. These molar volumes decrease with concentration of Al2O3 or AlPO4. In the system containing AlPO4, the relation between cryolite ratios (CRs) vs slopes of molar volume trend lines was identified with excellent correlation factor of R 2 = 0.9844, while in the system containing Al2O3 a discontinuity at CR = 2.5 can be observed.

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Acknowledgments

This work was supported by the Science and Technology Assistance Agency (APVV-0460-10), and by the Slovak Grant Agency (VEGA 2/0116/14 and VEGA 2/0095/12).

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Authors and Affiliations

  1. Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 36, Bratislava, Slovakia

    Zuzana Vasková (Research Scientist), Martin Kontrík (Ph.D. Student), Jarmila Mlynáriková (Research Scientist) & Miroslav Boča (Director of the Institute of Inorganic Chemistry, Head of the Department of Molten Systems, Independent Research Scientist)

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  1. Zuzana Vasková
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  2. Martin Kontrík
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  3. Jarmila Mlynáriková
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  4. Miroslav Boča
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Correspondence to Zuzana Vasková.

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Manuscript submitted January 22, 2014.

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Vasková, Z., Kontrík, M., Mlynáriková, J. et al. Density of Low-Temperature KF-AlF3 Aluminum Baths with Al2O3 and AlPO4 Additives. Metall Mater Trans B 46, 485–493 (2015). https://doi.org/10.1007/s11663-014-0218-5

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