Tabular corundum is a pure sintered corundum that shrinks completely without adding any additives such as MgO, B2O3, etc. It has a coarse and well-developed α-Al2O3 crystal structure, and the Al2O3 content is more than 99%. It has a plate-like crystal structure, small pores and many closed pores, and the porosity is roughly the same as that of fused corundum. It has high purity, good volume stability, and very small refire shrinkage. It is used to produce refractory materials or castables after high-temperature treatment. It has good thermal shock stability and flexural strength, but the price is higher than other alumina.
Tabular corundum can be used as the main component in aluminum carbon, aluminum-magnesium carbon, magnesia-aluminum carbon, magnesium spinel, and aluminum-chromium refractory bricks, or as a rich alumina component introduced into high-aluminum refractory bricks. Shaped refractory materials can be widely used in steel, casting, ceramics and other industries. The application in the steel industry covers almost the entire process of iron and steelmaking.
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