White Fused Alumina

White fused alumina, also known as white alumina oxide or white aluminum oxide, is a man-made abrasive whose main component is α-aluminum oxide (α-Al₂O₃). It is made by high-temperature smelting of high-purity aluminum oxide and has high hardness, high wear resistance and good chemical stability.

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Product Details

White Fused Alumina is made from industrial alumina powder, smelted at a high temperature of over 2000 degrees in an electric arc, and then cooled. It is crushed and shaped, iron is removed by magnetic separation, and sieved into a variety of particle sizes. Its texture is dense, the hardness is high, and the particles form sharp corners. Shape, suitable for manufacturing ceramics, resin-bonded abrasives, grinding, polishing, sandblasting, precision casting (corundum for precision casting), etc., and also for manufacturing high-grade refractory materials。

Applications

1、Abrasives: used in grinding wheels, sanding belts, sandpaper, etc., suitable for grinding and polishing metals, ceramics, and glass.

2、Refractory materials: used in high-temperature furnace linings, refractory bricks, etc.

3、Ceramics: used as additives to improve the hardness and wear resistance of ceramics.

4、Electronics industry: used to manufacture insulating materials and semiconductor devices.

5、Coatings: used as wear-resistant coatings on metal and concrete surfaces.

Specification:

The chemical composition table of White fused alumina:

Application	Specification		Chemical composition(%)				Magnetic material content(%)
Application	Specification		Al2O3	Na2O	SiO2	CaO
For refractory	Size sand	0-1mm 1-3mm 3-5mm 5-8mm	99.2Min	0.3 Max	0.1Max	0.5 Max	0.001 Max
For refractory	Fine powder	180#-0 200#-0 320#-0	99.0Min	0.4 Max	0.1 Max	0.6Max	0.003 Max
For abrasive	F	12#—80#	99.0Min	0.3Max	0.1 Max	0.4 Max	0.003 Max
		90#—150#	99.0Min	0.4Max	0.1 Max	0.4 Max	0.003 Max
		180#—240#	99.0Min	0.5Max	0.1 Max	0.4 Max	0.002 Max