Refractory Corundum Tabular Alumina

Refractory corundum tabular alumina was sintered in the vertical kiln invented by Thomas S. Curis in 1934. After pilot testing in 1935, it was commercially produced and used as a lining material for kilns in the refractory and ceramic industries. Tabular corundum, also known as tabular alumina, refers to recrystallized α-Al2O3 that is rapidly sintered at a high temperature of 1925°C, which is slightly lower than the melting point of α-Al2O3 (2050°C), and the grains have reached complete sintering, showing a two-dimensional plane. The microstructure is plate-shaped and has many intergranular and intragranular circular closed pores.

The crushed finished refractory corundum tabular alumina will undergo strict technical testing to ensure that the various parameters of the product meet the requirements of all parties.

As can be seen from the name, refractory corundum tabular alumina is mainly used as a high-quality refractory material to insulate heat and reduce the loss of various equipment. Such as, steel, casting, cement, petrochemical, ceramics, garbage incineration and other industries.

Other common applications include electrical insulators, kiln furniture and catalyst carriers.

Refractory corundum tabular alumina is an ideal material containing 90-100% alumina for high alumina bricks and amorphous linings. Suitable for ceramic, chemical and water-bound matrices. Refractory corundum tabular alumina can be used alone and in combined systems, as well as with calcined and/or activated alumina. Because refractory corundum tabular alumina, even as a fine powder, exhibits extremely high purity, it can be used to enhance the properties of lower alumina aggregates, such as bauxite and fused brown corundum, using the coarser particles of these aggregates and medium particles and fine powder of tabular corundum. The increase in tabular corundum consumption mainly comes from the continuous casting of steel. Especially for slides, dip tubes and nozzles, the use of tabular corundum is an industry standard requirement.

Basic Information

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