WHITE CORUNDUM 100F 200F 325F FINE POWDER FOR REFRACTORY 28181090
Brief introduction of White corundum
White corundum was made from the high quality alumina by melting above 2200℃ in the electric arc furnace and cooling.
White corundum is white with the main crystal phase alpha-Al2O3.
White corundum produced in titling electric arc furnace has the advantage of high bulk density and low porosity and the volume stability and thermal shock resistance can be improved.
Physical and Chemical Composition
| Physical Properties | |
| Hardness: micro | 21600-22600kg/mm3 |
| Hardness: Mohs | 9.0 min |
| Specific Gravity | 3.95-3.97g/cm3 |
| Bulk Density | 1.65-2.05g/cm3 |
| Particle Shape | Blocky, Sharp |
| Color | white |
| Chemical compositions | |
| Al2O3 | 99.40min |
| SiO2 | 0.15max |
| Na2O | 0.28max |
| Fe2O3 | 0.06max |
| CaO | 0.03max |
Applications
Refractory castables
Bonded abrasive tool
Coated abrasive tool
Reusable abrasive
Grinding,lapping & polishing medium
Raw material for foundry ,coating or paints
Resin/Ceramic grinding wheels & grinding media
Typical Size
| Fraction sand or powder | |
| Grit designation | Passing rate % |
| 0-1mm | 90 |
| 1-3mm | 90 |
| 3-5mm | 90 |
| 100 mesh | 90 |
| 200 mesh | 90 |
| 320 mesh | 90 |
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