Tabular Alumina
Tabular Alumina is also known as white sintered alumina, is a pure sintered α-alumina material that has been fully densified by rapid-sintering without the use of sintering aids at temperature in excess 1900℃.
Description of Tabular Alumina
Shape
Chemical Compositions
Physical Characteristics
AL2O3
Na2O
SiO2
Fe2O3
Bulk Density
Apparent Porosity
Water Absorption
≥%
≤%
≤%
≤%
≥g/cm3
%
%
Balls
99.4
0.40
0.10
0.03
3.5
5
1.5
Grains
99.3
0.40
0.10
0.03
3.5
5
1.5
Powder
99.0
0.40
0.12
0.03
–
–
–
Size Available
-8mesh, 3-6mesh, 6-10mesh, 6-14mesh, 8-14mesh, 14-28mesh, 28-48mesh, -14mesh, -28mesh, -48mesh, -100mesh, -325mesh
5-10mm, 2-5mm, 3-6mm, 2-3mm, 1-3mm, 1-2mm, 0.5-1mm, 0.2-0.6mm, 0-1mm, 0-0.5mm, 0-0.3mm, 0-0.2mm, 0-0.045mm
Typical Physical Properties of Tabular Alumina
01.
Characteristic
It has characteristic of large, well developed hexagonal tablet shaped α-alumina crystals of up to 200μm length.
02.
Specific Microstructure
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.
03.
High Refractoriness
It has extremely high refractoriness, high mechanical strength and abrasion resistance, very good chemical purity, excellent dielectric properties and good resistance against acid and alkali corrosion.
04.
Aggregate of Choice
It is the aggregate of choice in unshaped and shaped high performance refractory.
