Glass Furnaces Design Construction And Operation by W. Trier
ISBN 13: 9780900682209
This application is a continuation of application Ser. This invention relates to glass melting and is particularly directed to glass melting tanks using electric heating. It is well known for glass melting tanks to include a melting chamber in which solid batch material is heated to produce molten glass before entering a refining chamber in which the molten glass is at a sufficiently high temperature for refining to occur and thereby reduce defects due to impurities or bubble in the glass. Commonly the glass passes from a refining chamber through a conditioning zone in which thermal conditioning by controlled cooling is effected prior to glass leaving the tank through an outlet to a forming process. Such tanks may be used for continuous production of molten glass and are particularly applicable to the production of high quality glass for use in the production of flat glass. When solely electric heating is used in a melting chamber of such a tank it is normal for the molten glass in the melting chamber to be covered by a cold top of solid batch material which is progressively melted by heat from electrodes immersed in the glass in the melting chamber.
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