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Refractory Material

White Fused Alumina (Refractory grade)

 

White Fused Alumina(WFA or WA)is made from chemical by Higgns furnace or Tilting furnace at high temperature.It is very important raw material for advanced refractories and abrasives.Its properties are as folowing.

 

Type

Properties

Middle sodium II
Fraction(mesh)
0-1 1-2 3-5m/m
Fine(mesh)
0-180 0-320
Guarantee Value
Typical value
Guarantee Value
Typical value
Chemical Composition (%) -Al2O3
99
99.14
98.5
98.75
SiO2
0.4
0.12
0.4
0.19
Fe2O3
0.2
0.01
0.25
0.05
Na2O
0.4
0.35
0.5
0.23
Principal crystalline phase
-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)
8.310-4
Size(mm)
8-5 5-3 3-1 1-0
Fine(mesh)
-80,-120,-240,-320
Micropowder(um)
3-5 5-10
Test standard
GB/T3044-89
Packing
25kg/bag 1000kg/big bag
Usage
Refractories

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