Fused Zirconia Or Fused Azs?

The choice of refractories is one of the most essential factors in the glass industry and can lead to obtaining glass with a minimum level of defects, high manufacturing rates, and longer production campaigns. To help the glassmaker in his choice, this paper reports on many laboratory tests which evaluate the behaviour of two types of fused-cast refractories in contact with various types of glass. The refractories' resistance to corrosion was assessed and characterised in terms of their potential for causing solid-type defects (stones, cord, knots) or gaseous defects (seeds and blisters).