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Type: Artigo de periódico
Title: Numerical and experimental analysis of an approach based on variable solute distribution coefficients during purification by zone refining
Author: Cheung, N
Bertazzoli, R
Garcia, A
Abstract: A combined theoretical and experimental approach was undertaken to quantitatively determine the influence of a variable solute distribution coefficient, k, on the impurity distribution in multi-pass purification by zone refining. A numerical model capable of predicting the solute redistribution at any stage of a multi-pass zone refining was used for providing simulations. Experimental work on zone refining was carried-out with Sb, Ph and Sn samples. Axial impurities profiles have been experimentally determined for a number of zone passes. These results have been compared with the theoretical predictions by adopting both variable and constant k values. It has been shown that the adoption of a variable solute distribution approach in the simulation of impurity profiles during different zone passes of zone refining are generally much closer to the experimental profiles than the usual adoption of a constant k. (c) 2006 Elsevier B.V. All rights reserved.
Subject: zone refining
solute distribution coefficient
Country: Holanda
Editor: Elsevier Science Bv
Citation: Separation And Purification Technology. Elsevier Science Bv, v. 52, n. 3, n. 504, n. 511, 2007.
Rights: fechado
Identifier DOI: 10.1016/j.seppur.2006.06.005
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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