AZS41 Fused Zirconium Corundum Brick

Production process:

The raw materials are imported from Australia (ILUKA), China Alumina Group (Shangjie Aluminum Plant) and a small amount of zirconia (content: ZrO2 ≥ 90%) from Fujian Sanxiang New Materials Company, which are melted in an electric arc furnace for 3 hours, cast and processed.

Product characteristics: In addition to having the same eutectic body as AZS33#, AZS36# adds more interlocking zirconia crystals and has a low glass phase content. Therefore, the corrosion resistance of 36#AZS zirconium corundum bricks is further enhanced, and the pollution to glass liquid is further reduced.

Application: Feeding port paving bricks, feeding port pool walls, melting part pool walls and other parts.

Chemical composition

Crystal phase analysis

Aluminum: 45.5% Zirconium: 41% Silicon: 12% Zirconia (badgeon): 41%

Sodium: 1.05% Iron, titanium: 0.25% Others 0.25% Glass phase: 17% Alumina (corundum): 42%

Fused zirconium corundum bricks are high-grade fused cast refractory materials with the following three advantages.

1. The composition phase is completely determined by the composition, and the final stable phase is good

The melt in the electric furnace is a completely one-phase liquid, and the composition phase after solidification is completely determined by the composition. This is generally impossible for bonded refractory materials.

For example, the bonded high-alumina brick is composed of quartz (Si02) and corundum (α-Al203): Since both exist in granular form, mullite is only generated at the junction of the two during firing. Therefore, the brick body is easily eroded from the high Si02 component during use. It is very difficult to obtain complete mullite crystallization for this kind of brick. However, this problem does not exist in fused zirconium corundum bricks. In the liquid phase, various chemical compositions are fully mixed and uniformly in molecular units, and finally re-formed. The crystal is well developed and the crystal shape can be seen with the naked eye. The bonded refractory body is very small and cannot be seen with the naked eye under normal circumstances. In this way, among the crystals of the same weight, the surface area of ​​​​the fused zirconium corundum brick crystal is small, so it has good resistance to corrosive agents.

From this we can see that the fused zirconium corundum bricks can obtain ideal crystals because, firstly, the raw materials react fully and secondly, the crystals are large, so the crystal stability is good.

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