Schott Ag

André Schrepfer

Steffen Grün

Thomas Lifka

Olaf Claußen

A method for melting and/or refining glass, glass ceramic or glass which can be ceramized to form glass ceramic includes: providing a batch of raw materials; heating the batch until a melt of molten glass is obtained, the batch being heated at least in sections to a temperature above T3 which corresponds to a viscosity of the molten glass of 10dPa*s; refining the melt, the melt being heated at least in sections to a temperature above T2.5 which corresponds to a viscosity of the molten glass of 10dPa*s, refining of the melt includes adjusting an oxygen partial pressure p(O) which is reduced by at least 60% relative to an Osaturation in the melt at temperature T3; and obtaining a re-fined glass, a refined glass ceramic or a refined glass which can be ceramized to form glass ceramic.

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Frankfurt, Germany

André Schrepfer