Process for the melting, refining and homogenizing of glass melts

US6810689B2 · kind B2 · utility

Assignee

• Schott Glas · DE

Inventors

• Hildegard Römer · Karben, DE
• Werner Kiefer · Ingelheim am Rhein, DE
• Wolfgang Schmidbauer · Mainz, DE
• Thomas Pfeiffer · Kumhausen, DE
• Guido Räke · Bingen, DE

Key dates

• Filing date: Jan 25, 2001
• Grant date: Nov 2, 2004
• Expiry date: Dec 28, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C1/004
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a process for the production of a glass melt.For the avoidance of the oxygen reboil the process is equipped with the following process stages or steps:a melting stagea refining stagea homogenizing and conditioning stage;in which before the homogenizing and conditioning stage the melt is heated to a temperature of over 1700° C.;in which polyvalent ions are present in the melt in a proportion of at least 0.5% by wt.