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Product introduction of fused chrome corundum
The main mineral composition of fused chrome corundum brick is - Al2O3-Cr2O3 solid solution. The secondary mineral composition is a small amount of composite spinel (or without composite spinel), and the refractory brick with chromium oxide content of 1% - 30%.
Application of fused chrome cordundum
Chrome corundum bricks have been widely used, mainly for carbon black furnace, steel rolling furnace sliding platform and steel platform. It has good thermal stability and high temperature creep performance
More relevant refractory products: Ceramic fiber rope
Parameters of fused chrome corundum
| Item | α-β Alumina | α- Alumina | β- Alumina | |
| Chemical Composition,% | Al2O3 | ≥95 | 98.5 | ≥92 |
| SiO2 | ≤0.5 | 0.4 | ≤0.5 | |
| NaO2 | 3-5 | 0.9 | 5-7 | |
| Other oxides | ≤0.5 | ≤0.2 | ≤0.2 | |
| Bulk density | g/cm3 | 3.54 | 3.94 | 3.26 |
| Cold crushing strength MPa | Mpa | ≥200 | ≥250 | ≥300 |
| Thermal expansion coefficient, 1000℃ | % | 0.7 | 0.88 | 0.65 |
| Thermal expansion coefficient, 1500℃ | % | 1.09 | 1.32 | 1.01 |
| Crystallographic Analysis % | α-Al2O3 | 40-50 | 90-95 | - |
| β-Al2O3 | 50-60 | 4-10 | ＞97.5 |