ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 29, (3) 203 - 213 (1985)


FORMATION OF CONVECTIVE FLOW IN GLASS MELTS DUE TO VAPORIZATION OF A SURFACE ACTIVE COMPONENT

Part II: Discussion of results and the vaporization model


 
Němec Lubomír 1, Bařtipán Ivo 2
 
1 Joint Laboratory for the Chemistry and Technology of Silicates, Czechoslovak Academy of Sciences and Institute of Chemical Technology, Suchbátarova 5, 166 28 Prague 6, CZ
2 Sklo Union, Concern Corporation, Sklotas, Dukla Oloví Works, CZ

The results of experiments dealing with identification and rate of cell flow, resulting from the vaporization of surface active components from some qlass melts, allow a corresponding model of vaporization to be suggested. In the given instance, the model derived from fluoride glass melt corresponded to the process of mass transfer in which resistance of the liquid phase and that of the phase boundary are involved. In the later stages of vaporization the two resistances show roughly identical effects. According to the experimental conditions, the fluorides being vaporized were hydrolyzed to an extent from 10 to 75 %.


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