Fused Cast AZS Refractory Materials — Structure and Structural Changes during Application

Dipl.-Ing. Bernhard Fleischmann

Hüttentechnische Vereinigung der Deutschen Glasindustrie e.V., 63071 Offenbach on Main, Germany


Volume 2, Issue 2, Pages 63-68


The microstructure of alumina-zirconia-silica (AZS) materials is changing during use, which is one reason for the investigations the results of which are presented here. The paper will therefore deal with the microstructure of fused cast AZS blocks after production, during use and after cooling the furnace and block, respectively. The presence of different mineral phases found in samples removed from an operating glass furnace to answer questions respecting glass production problems is explained.


alumina-zirconia-silica (AZS) refractories, microstructure, soda-lime-silica glass, glass melting, glass furnaces



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