Er 2001 Slz: Very Low Exudation Azs Product For Glass Furnace Superstructures

Fused cast refractories are widely used in glass soda-lime-silica furnace superstructures due to their high resistance to corrosion by the furnace atmosphere. However, exudation of the vitreous phase of AZS refractories at high temperatures, can lead to the formation of defects in the glass, especially during furnace start-up. The ability of the furnace to digest these inclusions may not be sufficient to avoid production losses for glassmakers. To solve this problem, a new fused cast AZS refractory has been developed. It offers zero exudation level under typical glass furnace operating conditions and maintains or enhances all other positive characteristics of fused-cast AZS.