Avoidance of tridymite frost stone defects in the production of float glass. The roof of the refiner zone of the furnace is shielded by at least one continuous, nonluminous stream of gas thus preventing attack on the silica roof refractories by vapour containing alkali.
Origin
Unknown
Journal Title
B.P. 1 393 105, 7.5.75
Sector
Primary Papers
Class
PP 419