Fused Al2O3 hollow ball

Product Description

Fused Al2O3 hollow ball is a new type of high temperature insulation material which is made from industrial aluminum treated by smelting in an electric furnace. The crystal form is a-Al2O3 micro crystals.
Fused Al2O3 hollow ball can be made into various shapes with the highest temperature 1800 ℃, which is of high mechanical strength, and the volume density is only one-half of corundum products.

There are mixed grade Fused Al2O3 hollow ball and graded ball two types:

mixed-level ball diameter: 0.2-5mm

graded ball diameters: 0.2-1mm, 1-2mm, 2-3mm, 3-5mm.

Chemical data

Chemical index for Fused Al2O3 hollow ball
size	Al2O3	Fe2O3		SiO2	Na2O	MgO		K2O	Cao
0.2-5mm	≥99%	≤0.15%		≤0.3%	≤0.5%	≤0.1%		≤0.1%	≤0.1%
Physical index for Fused Al2O3 hollow ball
Bulk density			refractoriness				Shape
0.5-1g/cm3			1800 degree centigrade				White hollow ball