CALCULATION OF THERMODYNAMIC PROPERTIES OF LiF-AlF_3 MELTS

Acta Metall Sin

1993, Vol. 29

Issue (9): 60-64 DOI:

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CALCULATION OF THERMODYNAMIC PROPERTIES OF LiF-AlF_3 MELTS

XU Qian;QIU Zhuxian Northeast University of Technology; Shenyang

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XU Qian;QIU Zhuxian Northeast University of Technology; Shenyang. CALCULATION OF THERMODYNAMIC PROPERTIES OF LiF-AlF_3 MELTS. Acta Metall Sin, 1993, 29(9): 60-64.

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Abstract The dissociation model of complex ion, combined with the sublattice solutionmodel is applied to calculate constants and heats of dissociation successively of complex ionAlF_6~(3-). The results show that AlF_6~(3-)in LiF-AlF_3 melt has a stronger tendency todissociation and smaller heats of dissociation than that in other alkali fluoride and the alumi-num fluoride system. The molar concentration of each composition in LiF-AlF_3 melts arecalculated, and the thermodynamic properties of mixing for LiF(l) and AlF_3(s) are calculatedas well. The results of calculation agree with experimental results.

Key words: LiF-AlF_3 melt thermodynamic property dissociation

Received: 18 September 1993

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1993/V29/I9/60

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