Nitriding Of Oxidized Technical Glass Melts

There are hints that in technical glass melts there is a certain chemical nitrogen solubility. Nitrogen analyses of the melt concerned show 11ppm nitrogen which is about 55 times higher than with a physical nitrogen solubility. Oxygen bubbles of an electric reboil (electrolysis of the melt) in tv-glass and borosilicate glass melts show nitrogen contents which are much higher usual compared to the carbon dioxide content. It is supposed that in the melting tank, flames are touching the melt surface giving rise to chemically dissolved nitrogen. This has to be taken into consideration when trouble-shooting.