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

Ceramics-Silikáty 50, (3) 134 - 139 (2006)


REDOX EQUILIBRIA OF SULPHUR IN GLASS MELTS
 
Kloužek Jaroslav, Arkosiová Miroslava, Němec Lubomír
 
Laboratory of Inorganic Materials Joint Workplace of Institute of Inorganic Chemistry ASCR and Institute of Chemical Technology in Prague, Technická 5, 166 28 Prague, Czech Republic

Keywords: Sulphur, Redox, Glass melt
 

The combination of experimental and computational methods used for the study of redox equilibria of sulphur in glass melts makes possible to reveal mechanism and time sequence of redox phenomena taking place during melting process. Both methods were applied for the optimization of sc. reducing sulphate refining realized by the addition of sulphate and reducing agent to the glass batch. The results of experiments supported by the model calculation showed that proper combination of both components at the same time improves homogenization and refining of glass melt and suppresses unwanted bubble nucleation at maximal melting temperatures.


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