44 (2) 61-65 (2000)
DISTRIBUTION AT THE INTERFACE OF GLASS MELTS WITH DIFFERENT OXIDATION STATE
Ullrich, M. Jiřička, D. Rohanová, T.
A simplified computational
model of refining gas transfer through the quiescent plane interface between
oxidized and reduced glass melts containing sulfur compounds as refining agents
is presented. The results of calculations show no oversaturation of glasses by
gases, namely by SO2, in the vicinity of the interface. This was
confirmed by laboratory experiments that did not detect any bubble nucleation in
the interface region. However, if the glasses were quickly mixed by stirring, a
considerable amount of bubbles evolved in the melt. In addition, high glass
oversaturation by SO2 was calculated from redox equilibria for
instantaneously mixed glasses.