Process and system for fining glass

A glass making process comprising a step of fining the molten glass in a fining vessel comprising a top wall portion not in direct contact with the molten glass, and a side wall portion in direct contact with the molten glass, wherein the top wall portion has a temperature T(top), the side wall port...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: FRALEY RAYMOND EUGENE, KOTACSKA LAWRENCE HENRY, MURPHY JAMES PATRICK, GRZESIK PAUL RICHARD, MATTINGLY, III WILLIAM BRASHEAR
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A glass making process comprising a step of fining the molten glass in a fining vessel comprising a top wall portion not in direct contact with the molten glass, and a side wall portion in direct contact with the molten glass, wherein the top wall portion has a temperature T(top), the side wall portion has a temperature T(side), and T(top)−T(side) 10° C., and a glass fining system. The invention is particularly useful for glass fining systems comprising a metal fining vessel made of precious metals such as Pt and/or Pt-Rh alloys.