which is applied to cooling pool and superstructure of glass kiln, as well as non-ferrous metal smelting furnace and high-temperature tunnel kiln and etc.
Technical specifications:
Chemical composition | RH-H |
Al2O3 | 98.5% |
SiO2 | 0.4% |
Na2O | 0.9% |
Fe2O3 | Tiny |
TiO2 | Tiny |
Physical properties | |
True density | 3.94g/cm3 |
Cold crushing strength | ≥ 250MPa |
Thermal expansion rate at 1000deg. C | 0.88% |
Thermal expansion rate at 1500deg. C | 1.32% |
Bulk density | ≥ 3.30g/cm3 |
≥ 3.60g/cm3 | |
Glass phase | 0-1 |
Alpha-corundum | 90-95% |
Beta-corundum | 5-10% |