Abstract: The apparatus (300) for feeding, homogenizing, and conditioning a high viscosity glass melt for manufacturing display glass has a stirring device (110, 406), an upstream connecting part (100, 400) that connects the stirring device (110, 406) to an upstream melting and/or refining unit, and a downstream connecting part (120, 420) that connects the stirring device (110, 406) to a downstream forming or shaping device. Wall material and base material of the first and connecting parts and the stirring device (110, 406) coming in contact with the glass melt are made from a zirconium-dioxide-containing fire-resistant material containing a large amount, preferably more than 85 wt. %, of zirconium dioxide. A method of operating the apparatus to make display glass is also described.

Abstract: The invention concerns a process and a device from the production of molten glass. According to the invention, measures will be taken to lead the current of the molten glass through the tank furnace so that cutoffs of the glass current between the surface of the glass bath, on the one hand, and the outlet opening on the other hand are avoided and a an equal holding period of all melt particles in the tank furnace is achieved.

Abstract: The invention concerns a process and a device from the production of molten glass. According to the invention, measures will be taken to lead the current of the molten glass through the tank furnace so that cutoffs of the glass current between the surface of the glass bath, on the one hand, and the outlet opening on the other hand are avoided and a an equal holding period of all melt particles in the tank furnace is achieved.

Abstract: The invention relates to a melting cistern for producing a glass melt as well as to its refining,

Abstract: According to the invention, measures will be taken to lead the current of the molten glass through the tank furnace so that cutoffs of the glass current between the surface of the glass bath, on the one hand, and the outlet opening on the other hand are avoided and a an equal holding period of all melt particles in the tank furnace is achieved.

Abstract: The invention relates to a solarization-stable aluminosilicate glass which has the following composition (in % by weight, based on oxide): SiO.sub.2 45-68; Al.sub.2 O.sub.3 >5-18; Na.sub.2 O 0-5; K.sub.2 O>9-15; where Na.sub.2 O+K.sub.2 O.gtoreq.10; CaO 0-10; SrO 0.5-18; BaO 0-10; where CaO+SrO+BaO 8-<17; ZrO.sub.2 1-6; TiO.sub.2 0.2-5. The glass is particularly suitable as substrate glass in display technology, in particular for plasma display panels.