Abstract—
It is shown that n-fold refining of a host–impurity system at a rate V, separation factor K < 1, and final yield G by simple distillation or conventional directional solidification is more effective in terms of final product purity and throughput than is single-cycle refining at a rate v < V, a separation factor k < K < 1, and the same yield G if ≈ln k/ln K < n < V/v (where V and v are linear directional solidification rates or vaporization rates per unit surface area in the case of distillation).
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REFERENCES
Devyatykh, G.G. and Elliev, Yu.E., Glubokaya ochistki veshchestv (Ultrapurification of Substances), Moscow: Vysshaya Shkola, 1990.
Ignatovich, E., Khimicheskaya tekhnika. Protsessy i apparaty (Chemical Engineering: Processes and Apparatuses), Moscow: Tekhnosfera, 2007.
Dytnerskii, Yu.I., Protsessy i apparaty khimicheskoi tekhnologii (Processes and Apparatuses of Chemical Technology), part 2: Massoobmennye protsessy i apparaty (Mass Exchange Processes and Apparatuses), Moscow: Khimiya, 1995.
Hein, K. and Buhrig, E., Kristallisation aus Schmelzen, Leipzig: VEB Deutscher Verlag fur Grundstoffindustrie, 1983.
Kravchenko, A.I., Relationship between effective and ideal separation factors for distillation and sublimation, Inorg. Mater., 2016, vol. 52, no. 4, pp. 378–385.
Kravchenko, A.I., Efficiency of multiple distillation or crystallization refining with a preset yield, Inorg. Mater., 2020, vol. 56, no. 10, pp. 1055–1058.
Burton, J.A., Prim, R.C., and Slichter, W.P., The distribution of solute in crystals grown from the melt. 1. Theoretical, J. Chem. Phys., 1953, vol. 21, no. 11, pp. 1987–1991.
Korn, G.A. and Korn, T.M., Mathematical Handbook for Scientists and Engineers, New York: McGraw-Hill, 1961.
Pazukhin, V.A. and Fisher, A.Ya., Razdelenie i rafinirovanie metallov v vakuume (Separation and Refining of Metals in Vacuum), Moscow: Metallurgiya, 1969.
Nesmeyanov, A.N., Davlenie para khimicheskikh elementov (Vapor Pressure of Chemical Elements), Moscow: Akad. Nauk SSSR, 1961.
Kravchenko, A.I., Simple substances refining: efficiency of distillation methods, Funct. Mater., 2000, vol. 7, no. 2, pp. 315–318.
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Kravchenko, A.I. Applicability Criteria for Multiple Distillation or Crystallization Refining Instead of Single-Cycle Refining at a Preset Throughput and Yield. Inorg Mater 57, 748–752 (2021). https://doi.org/10.1134/S0020168521070098
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DOI: https://doi.org/10.1134/S0020168521070098