VACCUM REFINING OF GLASS OR THE LIKE WITH ENHANCED FOAMING

A stream of molten glass is supplied to the upper end of a refining vessel where it falls through an open space maintained at reduced pressure so that the material is at least partially foamed and then collects as a layer of foam above a layer of glass. The flow is subdivided into multiple streams b...

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Bibliographic Details
Main Authors MATESA JOSEPH M, WELTON WRIGHT M, SCHWENNINGER RONALD L, SHELESTAK LARRY J
Format Patent
LanguageEnglish
Korean
Published 22.08.1990
Edition5
Subjects
CHEMISTRY
GLASS
MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
METALLURGY
MINERAL OR SLAG WOOL
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Summary:A stream of molten glass is supplied to the upper end of a refining vessel where it falls through an open space maintained at reduced pressure so that the material is at least partially foamed and then collects as a layer of foam above a layer of glass. The flow is subdivided into multiple streams by encountering a solid body within the space. The appts. comprises a vessel adapted to hold the molten glass with a free space above, and for operation at reduced pressure. The device made of platinum or platinum alloy may be a grid or mesh, or may be horizontally extending throngh.
Bibliography:Application Number: KR19880007614