Melt–gas phase equilibria and state diagrams of the selenium–tellurium system
- Авторы: Volodin V.1, Trebukhov S.1, Burabaeva N.1, Nitsenko A.1
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Учреждения:
- AO Center for Earth Sciences, Metallurgy, and Enrichment
- Выпуск: Том 91, № 5 (2017)
- Страницы: 800-804
- Раздел: Chemical Thermodynamics and Thermochemistry
- URL: https://journals.rcsi.science/0036-0244/article/view/169445
- DOI: https://doi.org/10.1134/S0036024417050296
- ID: 169445
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Аннотация
The partial pressures of saturated vapor of the components in the Se–Te system are determined and presented in the form of temperature–concentration dependences from which the boundaries of the melt–gas phase transition are calculated at atmospheric pressure and vacuums of 2000 and 100 Pa. The existence of azeotropic mixtures is revealed. It is found that the points of inseparably boiling melts correspond to 7.5 at % of Se and 995°C at 101325 Pa, 10.9 at % at 673°C and 19.5 at % at 522°C in vacuums of 2000 and 100 Pa, respectively. A complete state diagram is constructed, including the fields of gas-liquid equilibria at atmospheric and low pressures, the boundaries of which allow us to assess the behavior of selenium and tellurium upon distillation fractionation.
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V. Volodin
AO Center for Earth Sciences, Metallurgy, and Enrichment
Автор, ответственный за переписку.
Email: nuri_eng@mail.ru
Казахстан, Almaty, 050010
S. Trebukhov
AO Center for Earth Sciences, Metallurgy, and Enrichment
Email: nuri_eng@mail.ru
Казахстан, Almaty, 050010
N. Burabaeva
AO Center for Earth Sciences, Metallurgy, and Enrichment
Email: nuri_eng@mail.ru
Казахстан, Almaty, 050010
A. Nitsenko
AO Center for Earth Sciences, Metallurgy, and Enrichment
Email: nuri_eng@mail.ru
Казахстан, Almaty, 050010