Isobaric vapor-liquid equilibrium (VLE) of ternary lead–tin–antimony alloy system at 2 Pa

  • Junjie Xu Key Laboratory of Vacuum Metallurgy for Non-ferrous Metal of Yunnan Province, Kunming 650093, PR China
  • Jingbao Gao National Engineering Laboratory of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, PR China
  • Lingxin Kong National Engineering Laboratory of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, PR China
  • Baoqiang Xu National Engineering Laboratory of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, PR China
  • Bin Yang National Engineering Laboratory of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, PR China
  • Yanjun YOU National Engineering Laboratory of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, PR China

Abstract


New experimental vapor-liquid equilibrium (VLE) data of the ternary lead-tin-antimony (Pb-Sn-Sb) alloy system are determined by using a new experimental method. The experimental VLE data passed the thermodynamic consistency test (Van Ness test), which indicates that the experimental results are reliable. The activities of components of the Pb-Sn-Sb ternary alloy and the corresponding three constituent binaries were calculated using the Wilson equation. The predicted values agree well with the experimental data, and the average relative deviation were smaller than ± 4.00 %, the average standard deviation smaller than ± 0.03 for all constituent binaries, which indicates that the Wilson equation is reliable for calculation of activity of components of Pb-Sn-Sb alloy system. The VLE data of Pb-Sn, Sb-Sn binary alloys, and Pb-Sn-Sb ternary alloy was calculated based on the Wilson equation and VLE theory. The calculated VLE are in good agreement with the experimental VLE data, indicating that this method is reliable for calculating VLE of alloy systems. This study offer a valid way to analyze the composition of product dependence on the temperature and pressure during the process of vacuum distillation, which will be of important guiding significance to vacuum distillation processes.

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Published
2020/12/30
How to Cite
Xu, J., Gao, J., Kong, L., Xu, B., Yang, B., & YOU, Y. (2020). Isobaric vapor-liquid equilibrium (VLE) of ternary lead–tin–antimony alloy system at 2 Pa. Journal of Mining and Metallurgy, Section B: Metallurgy, 56(3), 327-335. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/21932
Issue
Vol. 56 No. 3 (2020)
Section
Original Scientific Paper

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