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Alumina hollow ball for insulation material

Alumina 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.

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Alumina hollow ball for insulation material

Product Description

Alumina 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.
alumina hollow 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 alumina hollow 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 alumina hollow

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 alumina hollow

Bulk density

refractoriness

Shape

0.5-1g/cm3

1800 degree centigrade

White hollow ball

Bulk density(g/cm3)

Item5-4mm4-3mm3-2mm2-1mm1-0.5mm3-0.2mm0.5-0.2mm
g/cm30.450.550.650.750.850.850.95

alumina hollow:Alumina hollow ball for insulation material

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