Verfahren zum Herstellen von Glas mit niedrigerem Alkaligehalt.

摘要

A method for producing lower alkali glass wherein fluxing activity provided by alkali oxides is replaced by fluxing activity provided by water in the glassmaking process. Water is effectively and efficiently provided to the glass by the establishment of a high water vapor concentration in the glassmelting zone atmosphere which is produced by a defined heat-generating oxygen-based combustion reducing nitrogen and boosting the water vapor concentration, and maintained in the glass by passing molten glass through successive refining and forehearth zones having atmospheres with high water vapor concentrations.