Name: Calcined Alumina
Brand: Chemtradeint
Rating: 5 (965 reviews)

Calcined Alumina

Calcined alumina is made by heating aluminum oxide or aluminum hydroxide to high temperatures to remove chemically bound water and impurities. Calcined alumina is known for its high purity, hardness, density, and high melting point. It's also chemically inert and stable at high temperatures.

Physical Specification

BET SURF ACE AREA : 60-80 M2 / GM

LOI (300-1000 deg C) : 0.5-1%

BULK DENSITY : 0.95-1.05 T/M3

1	Typical	Maximum
Alpha Content %	-	10
+125 Micron %	-	15
+125 Micron %	-	15
-45 Micron %	10	12

Chemical Specification

1	Typical	Maximum
P2O5 %	0.0015	0.002
Na2O %	0.38	0.50
Fe2O3 %	0.01	0.015
SiO2 %	0.012	0.02
ZnO %	0.005	0.0008
CaO %	0.042	0.05
TiO2 %	0.0013	0.004
V2O5 %	0.0015	0.002
K2O %	0.0015	0.002
Ga2O %	-	0.012
Alumina Content %	98.7	98.5(Minimum)

Application and Uses :

Calcination is the last step of the Bayer process, which heats the hydrated alumina (aluminium hydroxide or gibbsite,Al(OH)3)
Calcined alumina is therefore utilized in a variety of industrial applications including Structural ceramics,
Technical ceramics, Polishing compounds for plastic, metal, and glass, Fillers for Rubber and Plastics, Friction – anti slip, Refractories, Paint & Coatings and Thermal Spray Powders.
Alumina, a white crystallized powder, is made by calcining aluminum hydroxide and the chemical formula is Al2O3. It is widely used typical α-Alumina (Corundum).
The substance is not classified as hazardous according to the Globally Harmonized System (GHS).
aluminum oxide that has been heated at temperatures in excess of 1,050 °C (1,900 °F) to drive off nearly all chemically combined water