China Supplier High Purity Refractory Castable Alumina Tabular Alumina Powder
China Supplier High Purity Refractory Castable Alumina Tabular Alumina Powder
Tabular Alumina is a pure sintered alpha-alumina material that has been fully densified by rapid-sintering without the use of sintering aids at temperatures in excess of 1800°C.
Tabular Alumina has characteristic large, well developed hexagonal tablet shaped alpha-alumina crystals of up to 200 µm length. The excellent thermal volume stability and thermal shock characteristics can be attributed to its specific microstructure: low open porosity and large crystals with closed spherical pores,which are entrapped upon re-crystallization during rapid sintering.
We offer tabular alumina size as below:
Lumps size:,0-0.5mm,0.5-1mm,1—3mm,3-5mm 5—8mm
Fine powder:180mesh 200mesh 325mesh
Customized size is available
Product Data
| Item | Chemical Composition | Physical Properties | ||||||||||
| Al2O3(%) | SiO2(%) | Fe2O3(%) | K2O(%) | Na2O(%) | Bulk Density(g/cm3) | Apparent Porosity | ||||||
|
Tabular Alumina |
≥99.3 | ≤0.1 | ≤0.04 | ≤0.01 | ≤0.26 | ≥3.9 | ≤ 5% | |||||
Applications
Tabular Alumina is the aggregate of choice in unshaped and shaped high performance refractories.
It is used in a variety of industries such as steel, foundry, cement, petrochemical, ceramic and waste incineration.
Other common applications include its use in electrical insulators, kiln furniture and as a catalyst support.
Ground Tabular is an excellent product to be used as a filler in epoxy or resin systems
where high dielectric strength, thermal conductivity or abrasion resistance is desired.
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