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自动化与信息科学期刊

每年出版 12 

ISSN 打印: 1064-2315

ISSN 在线: 2163-9337

SJR: 0.173 SNIP: 0.588 CiteScore™:: 2

Indexed in

The Technique of Additional Purification of Substances by the Directional Solidification Method by Means of Flash Heating of a Melt

卷 40, 册 1, 2008, pp. 35-45
DOI: 10.1615/JAutomatInfScien.v40.i1.30
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摘要

A technique allowing greater degree of substances purification and using the directed crystallization method of periodic intensive heating the segment of lateral surface of the vial with a melt near the crystallization front, is proposed. Numerical simulations has shown that this mode of heating leads to the formation of convective vortex, which, as a result of the Archimedean force, rises to the surface, grasping and carrying out impurities to the top of the molten zone, which are located near a zone of crystallization. This, in turn, leads to the decrease in the concentration of impurities in the greater part of the crystal resulting from growth, i.e. to a more pure substance in this part of the crystal.

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