Tabular Alumina support desiccant (alumina balls) is used as a
support material in air dryer desiccant beds.
Tabular alumina is recrystallised or sintered a-alumina, so
called because its morphology consists of large, 50-500 mm, flat
tablet-shaped crystals of corundum. It is produced by
pelletising, extruding, or pressing calcined alumina into shapes
and then heating these shapes to a temperature just under their
fusion point, 1700-1850ºC in shaft kilns.
After calcination, the spheres of shapes of sintered alumina can
be used as they are for some applications, e.g. catalyst beds, or
they can be crushed, screened and ground to produce a wide
range of sizes. The appearance is White Crystalline Granules or
Powder. As the material has been sintered it has an
especially low porosity, high density, low permeability, good
chemical inertness, high refractoriness and is especially suitable
for refractory applications.
Tabular Alumina:
- Absorption Resistant
- Shock Resistant
- Heat Resistant
- Long Life
- Inert
- Purity