AZS36 Fused Zirconium Corundum Brick

Production Process:

Use imported Australian (ILUKA), China Alumina Group (Shangjie Aluminum Plant) and a small amount of zirconia (content: ZrO2 ≥ 90%) from Sinoma as raw materials, melted in an electric arc furnace for 3 hours, cast and processed.

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

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

Chemical composition crystal phase analysis

Aluminum: 47.55% Zirconium: 36.5%

Silicon: 14.2% Zirconia (badgeolith): 36%

Sodium: 1.4% Iron, titanium: 0.25% Others 0.1%

Glass phase: 20% Alumina (corundum): 44%

Electric fused refractory materials. Generally, industrial furnaces are built with various combined refractory materials. The wall bricks of the glass melting furnace are damaged quickly due to long-term physical and chemical erosion of the glass liquid, which shortens the life of the furnace. When clay bricks are used as the pool wall, the furnace life is only a dozen months. Therefore, it is required to study a new type of electric fused zirconium corundum brick. The electric fused zirconium corundum brick refractory material was invented under this circumstance.

Electric fused zirconium corundum brick is a man-made synthetic raw material. The manufacturing method is: put the selected and pre-treated raw materials into the electric furnace, melt them with graphite electrodes, and cast them into a model after a certain period of time. The melting temperature is about 2000℃ due to different types of refractory materials. The model is made of high-purity silica sand, alumina or graphite plate. Due to the large size of the bricks, the weight is generally more than 200 kilograms. If the cooling is too fast, cracks will occur. Therefore, it is necessary to undergo heat preservation annealing. This generally takes several days to more than ten days. After cooling, it is cut and ground with a diamond tool to make the size error no more than 1.0 mm. After inspection, it leaves the factory.

Fused zirconium corundum bricks are different from bonded refractory materials. Bonded refractory materials are mainly solid-phase reactions during firing. However, fused zirconium corundum bricks react completely in liquid phases between various raw materials. Therefore, the manufacturing technology is more difficult.

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