unshaped refractory
90% Alumina (Corundum) Castable
90% alumina (corundum) castable has an alumina content of ≥90%, uses white corundum/brown corundum as the main aggregate with low-cement or ultra-low-cement bonding, and belongs to the high-purity high-temperature refractory castables. It is heat-resistant, corrosion-resistant and wear-resistant, and is suitable for high-temperature conditions around 1600℃.
| Grade | Al₂O₃ Content | Long-term Service Temp. | Typical Applications |
| 90C | ≥90% | 1600℃ | High-temperature incinerators, kiln mouths of lime kilns, high-temperature sections of heating furnaces, burners and furnace nozzles of industrial furnaces, high-temperature flues, ceramic kilns, non-ferrous metal smelting furnaces, high-temperature linings of waste and hazardous-waste furnaces. |