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White Fused Alumina (Refractory grade) buy in Beijing
Buy White Fused Alumina (Refractory grade)
White Fused Alumina (Refractory grade)

White Fused Alumina (Refractory grade)

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Description

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 following :

Type

Properties

Lower sodiumI Middle sodiumII
Fraction(mesh)
0-1 1-2 3-5m/m
Fine(mesh)
0-180 0-320
Fraction(mesh)
0-1 1-2 3-5m/m
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
Micropowder(um) 3-5 5-10
Test standard GB/T3044-89
Packing 25kg/bag 1000kg/big bag
Usage Refractories
Alumina Bubble
Index

Properties

Guarantee value Typical value
Chemical composition (%) Al2O3 ≥98.5 99.48
Packing density (g/cm3) 0.5-1.0 0.74
Damaged rate(%) ≤15 12
Refractoriness(°C) 1800
Particle size ¢ 5-0.2mm
Test standard GB/T3044-89
Packing 20kg/plastic bag(Dampproof)
Usage Lnsulating
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White Fused Alumina (Refractory grade)
White Fused Alumina (Refractory grade)
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