alumina hollow ball for thermal insulation filler
Description for alumina hollow ball:
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 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.
Available sizes:
Mixed grade: 0.2-5mm
Graded grade: 0.06-0.1mm, 0.1-0.2mm, 0.2-0.5mm, 0.2-1mm, 0.5-1mm, 0.2-1mm, 1-2mm, 2-3mm, 1-3mm, 3-4mm, 3-5mm
Chemical index | |||||||||
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 | |||||||||
Bulk density | refractoriness | Shape | |||||||
0.5-1g/cm3 | 1800 degree centigrade | White hollow ball | |||||||
Alumina hollow ball:
Package for alumina hollow ball:
25kg/pvc bag, 40 pvc bags/jumbo bag
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