Patent ID: 7040122
Filing Date: 2006-05-09
Classification: C03B,Y02P

Abstract:
1. A process for producing silicate molten glass from mixtures or fragments comprising the following process steps: the mixture or the fragments are poured into a tank furnace that is heated by fossil fuel and are melted down to form a glass melt, the tank furnace including a tank floor and an outlet opening, the melt in the tank including an open surface layer above the outlet opening; the melt is released from the tank furnace through the outlet opening thereby forming a melt current; and measures are taken to lead the melt current through the tank furnace so as to avoid cuts of the surface layer from discharging through the outlet opening and to achieve a sufficient residence time for all melt particles in the tank furnace; wherein the outlet opening is depressed lower than the floor of the tank furnace and a screen formed of a sheet metal made of a refractory metal is placed above the outlet opening; and wherein the screen reroutes the current of the melt in the area in front of the outlet opening.