White Corundum Hollow Ball
White Corundum 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. White Corundum Hollow Ball can be made into various shpes 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 White Corundum Hollow Ball and graded ball two types:
mixed-level ball diameter: 0.2-5mm
graded ball diameters: 0.06-0.1mm, 0.1-0.2mm, 0.2-1mm, 1-2mm, 2-3mm, 3-5mm.
Chemical index for White Corundum 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 White Corundum Hollow Ball | |||||||||
Bulk density | refractoriness | Shape | |||||||
0.5-1g/cm3 | 1800 degree centigrade | White hollow ball | |||||||
Bulk density(g/cm3)
| Item | 5-4mm | 4-3mm | 3-2mm | 2-1mm | 1-0.5mm | 3-0.2mm | 0.5-0.2mm |
| g/cm3 | 0.45 | 0.55 | 0.65 | 0.75 | 0.85 | 0.85 | 0.95 |
White Corundum Hollow Ball:
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Application:
White Corundum Hollow Ball are widely used in high temperature furnace and ultra high temperature furnaces such as the petrochemical industry gasifier reactor, carbon black industry, metallurgical industry and other high-temperature induction furnaces, etc.
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