white aluminium oxide micropowder for refractory 325-0 280-0

$white aluminium oxide micropowder for refractory 325-0 280-0$

Model:	325-0 280-0 220
Brand:	Hexing
Origin:	Made In China
Category:	Industrial Supplies / Tools / Abrasives
Label:	White fused alumina , tabular alumina , aluminium oxide
Price:	-
Min. Order:	40 pc

Inquire Now

Product Description

White fused alumina(WFA), a kind of high-grade refractories, is made from the imported quality alumina by melting above 2000 c in the electric arc furnace and cooling. It is white with the main crystal phase a-AL2O3. The white alumina produced in the titling electric arc furnace has the advantage of high bulk density and low porosity, thus the volume stability and thermal shock resistance can be improved..

For Refractory: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		Lower sodium （I）				Middle sodium （II）
		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

$white aluminium oxide micropowder for refractory 325-0 280-0 1$ $white aluminium oxide micropowder for refractory 325-0 280-0 2$ $white aluminium oxide micropowder for refractory 325-0 280-0 3$