Hollow Alumina Balls for making holes on grinding wheel
Description for fused bubble alumina:
Fused Bubble alumina 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 Bubble alumina 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 of fused bubble alumina:
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
Fused bubble alumina 0.2-1mm:
Chemical index for fused bubble alumina | |||||||||
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 bubble alumina | |||||||||
Bulk density | refractoriness | Shape | |||||||
0.5-1g/cm3 | 1800 degree centigrade | White hollow ball | |||||||
Bulk density(g/cm3) for fused alumina bubble:
| 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 |
Test report for fused bubble alumina:
Paul (verified owner) –
Good service.
Edward (verified owner) –
Good service.
Admin –
good
Jack –
very well
Hayden (verified owner) –
Very fast delivery.
Admin –
Very fast delivery.