Activated alumina powder is also known as the rho alumina powder, which is a alumina transition phase. Its main crystal phase is ρalumina base. Ρalumina is made by aluminum hydroxide through suspension roasting rapid dehydration and rapid cooling system.
Its specific surface area is more than 260㎡/g, so it has strong flexibility , water absorption performance, and certain hydration.
It replaces pure calcium aluminate cement in refractory castable binder, micro silicon powder and ultrafine alumina powder in adhesive and binder.
Characteristics:
lHigh surface area
lLow LOI
lHigh AL2O3
|
Item |
Unit |
Technical requirement |
|
Particle size |
um |
10±0.5 |
|
ρ-AL2O3 |
% |
≥65 |
|
AL2O3 |
% |
92 |
|
SiO2 |
% |
≤0.02 |
|
Fe2O3 |
% |
≤0.02 |
|
Na2O |
% |
0.30-0.4 |
|
Surface area |
㎡/g |
250-300 |
|
Pore Volume |
ml/g |
0.20-0.25 |
|
LOI |
% |
6-8 |
|
Type |
Super sack/Jumbo bag |
|
Powder |
1000kg/ 2200 lb |
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activated alumina powder
