Abstract
Temperatures for the primary crystallization of Na3AlF6 in multicomponent electrolyte system of aluminum electrolysis process were determined by thermal analysis. An empirical equation describing liquidus temperatures for the primary crystallization of Na3AlF6 was derived: t/°C= 977.632+32.968 (CR)−25.742ω(Al2O3)−12.507ω(LiF)−2.123ω(KF)−2.040ω(CaF2) +5.300ω(CR)•ω(Al2O3)+1.200•ω(CR)•ω(LiF)−0.114ω(KF)•ω(CaF2)−7.726ω2(CR)+1.085ω2(Al2O3)−0.075•ω2(CaF2), where CR denotes the molar ratio of NaF/AlF3 and ω denotes the mass fraction. CR=2.0–3.0, ω(Al2O3)=2–4 %, ω(LiF)\ ω(KF)\ ω(CaF2)= 0−7 %.
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Yuezhong, D., Jianping, P., Yunbin, B., Naixiang, F. (2016). Liquidus Temperatures of Na3AlF6-AlF3-CaF2-KF-LiF-Al2O3 Melts. In: Sadler, B.A. (eds) Light Metals 2013. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-65136-1_116
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DOI: https://doi.org/10.1007/978-3-319-65136-1_116
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