WHITE FUSED ALUMINA  
     
 
 
     
 
White Fused Alumina is made from chemical by tilting furnace at high temperature. It is very important raw material for advanced refractories and abrasives.
 
     
  CHEMICAL AND PHYSICAL FEATURES:  
 
Type
Properties
Lower sodium(I)
Middle sodium (II)
Fraction(mesh)
0-1 1-2 3-5mm
Fine(mesh)
0-180, 0-320
Fraction(mesh)
0-1 1-2 3-5mm
Fine(mesh)
0-180, 0-320
Guarantee Value
Typical value
Guarantee Value
Typical value
Guarantee Value
Typical value
Guarantee Value
Typical value
Chemical Composition (%)
α-Al2O3
≥99
99.3
≥98.5
99.23
≥99
99.14
≥98.5
98.75
SiO2
≤0.2
0.15
≤0.3
0.22
≤0.4
0.12
≤0.4
0.19
Fe2O3
≤0.2
0.04
≤0.25
0.04
≤0.2
0.01
≤0.25
0.05
Na2O
≤0.15
0.12
≤0.25
0.18
≤0.4
0.35
≤0.5
0.23
Principal crystalline phase
α-Al2O3
Crystal system
Hexzagon
Colour
white
True density (g/cm3)
≥3.95
Packing density (g/cm3)
1.75-1.95
Mohs hardness
9
Linear expansion (1/°C)
8.3×10-4
Size(mm)
8-5, 5-3, 3-1, 1-0
Fine(mesh)
80,120,240,320
Micro powder(um)
3-5, 5-10
Test standard
GB/T3044-89
Packing
25kg/bag 1000kg/big bag
Usage
Refractory
 
     
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