a technique for producing solids of extreme purity, esp for use in semiconductors. The material, in the form of a bar, is melted in one small region that is passed along the solid. Impurities concentrate in the melt and are moved to the end of the bar
zone refining in Chemical Engineering
(zoʊn rɪfaɪnɪŋ)
noun
(Chemical Engineering: General)
Zone refining is a way of making a solid more pure by melting a bar of the solid in one small area, so that impurities gather in the melted area and move to the end of the bar.
Zone refining is now an accepted method for producing very pure materials.
Zone refining which is the technique of moving impurities to one end of a bar with a continuouslymoving molten zone, is a well-known method of preparing pure materials.
Zone refining is a way of making a solid more pure by melting a bar of the solid in one small area,so that impurities gather in the melted area and move to the end of the bar.