AZS Fused Zirconia Corundum Bricks

Product Data

AZS bricks are used primarily in glass industry kiln furnaces. The grade number reflects the alumina content of the fused zirconia corundum material, allowing furnace builders to match the brick to the thermal load of each kiln zone.

AZS bricks, formed from fused zirconia corundum, are the workhorse refractory for glass industry kiln furnaces, where they line the hot zones that shape molten glass. The grade number on each brick indicates its alumina content, letting furnace operators match material to the heat load at every layer of the kiln wall, from the crown down to the regenerator zone.

Because a glass furnace holds temperatures well above what conventional firebrick can tolerate, dense high-alumina AZS refractories are chosen for their combination of refractoriness, volume density and compressive strength. These properties limit creep and slagging over long campaign cycles, helping keep the working lining dimensionally stable while the melt stays hot and chemically active.

Suppliers typically offer AZS bricks in several standard grades so that furnace builders can blend specifications across different heat zones rather than running a single material throughout. Alongside these dense bricks, the wider refractory catalogue includes castables, insulation bricks and CFB boiler linings, which together cover the insulation, patching and lower-temperature duties that a complete kiln lining programme requires.

Selecting the right AZS grade involves balancing alumina content, thermal conductivity and wear behaviour against the specific glass composition being processed and the design of the furnace. Refractory suppliers who publish clear technical data sheets help plant engineers plan replacement cycles and lining layouts more confidently, since published specification data is far easier to work into a maintenance budget than undocumented, off-the-shelf alternatives.

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