CALCINATION
with the best equipment for the best quality and reliable production
DEVELOPMENT
of diverse calcined alumina and alumina-based products
QUALITY CONTROL
during production steps and for final product; composition, article size, density, etc.
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Reactive Alumina

to achieve superior physical properties with ultra fine particles

ALPHA company offers a wide range of reactive alumina used in the refractory industry. Reactive alumina is a subcategory of calcined alumina which is fully ground down so a significant part of the particles has reached the size of the constituent crystal size. Reactive aluminas are specially designed for the production of high-performance refractories where defined particle packing, rheology and consistent placement characteristics are as important as the superior physical properties of the final product. Porosity in agglomerates helps water absorption and limits crystal growth during sintering. Reactive alumina is used in the castable matrix, providing lower water demand and regulating rheology by controlling particle size distribution. Otherwise, high mixing water may be required and the product may suffer from inadequate physical properties or water and aggregate separation after casting.

Advantages:

Applications:

Chemical Analysis (by XRF, %)

Hard Calcined
Unit
AH201 (Normal Soda)
AH221 (Low Soda)
Physical Properties
BET
m2/g
1-2
1-2
D50
µm
1.7
1.7
D90
µm
4
4
Chemical Properties
Alpha Alumina Content
%
≈95
≈95
Al2O3
%
99.7
99.7
Na2O
ppm
3500
15002
CaO
ppm
150
150
SiO2
ppm
100
800
Fe2O3
ppm
115
115
MSDS
pdf
TDS
pdf
Medium Calcined Normal Soda
Unit
AM101
AM301
Physical Properties
BET
m2/g
2-3
3-5
D50
µm
1.7
2
D90
µm
4
4.5
Chemical Properties
Alpha Alumina Content
%
≈93
≈90
Al2O3
%
99.7
99.7
Na2O
ppm
3500
3500
CaO
ppm
150
150
SiO2
ppm
100
100
Fe2O3
ppm
115
115
MSDS
pdf
TDS
pdf
Medium Calcined Low Soda
Unit
AM121
AM321
Physical Properties
BET
m2/g
2-3
3-5
D50
µm
1.7
2
Screen Residue >45 µm
%
4
4.5
Chemical Properties
Alpha Alumina Content
%
≈93
≈90
Al2O3
%
99.7
99.7
Na2O
ppm
15002
15002
CaO
ppm
150
150
SiO2
ppm
850
850
Fe2O3
ppm
115
115
MSDS
pdf
TDS
pdf

APPLICATIONS:

Shaped Refractories

Unshaped Refractories

Grinding Media Lining Wear Parts

Catalysts

Spark plugs

Honeycomb Ceramics