Corundum bricks are a kind of aluminum-silicon refractory product with corundum as the main crystal phase. By adding some other chemical mineral components, it can form composite products, such as zirconium corundum bricks, chrome corundum bricks, titanium corundum bricks, etc. Corundum bricks have the characteristics of high melting point, good slag resistance, high strength and hardness, and abrasion resistance. Often used in metallurgy, chemical industry, glass, ceramics and other industrial kiln lining. Corundum bricks are mainly used in glass furnace superstructure , feed channel brick, cover plate, molding parts, middle temperature carbon black reactor lining and other thermal equipment lining.
Corundum mullite bricks have good high temperature strength, high temperature creep resistance, thermal shock resistance and erosion resistance. It is mainly used in high air temperature hot blast stove, also used in glass kiln and as ceramic kiln.
| INDEX PRODUCT | RBTGM-80 | RBTGM-85 | RBTCA-90 | RBTCA-99 |
| Refractoriness(℃) ≥ | 1950 | 1950 | 2000 | 2000 |
| Bulk Density(g/cm3) ≥ | 2.80 | 2.90 | 3.0 | 3.2 |
| Apparent Porosity(%) ≤ | 17 | 17 | 18 | 18 |
| Cold Crushing Strength(MPa) ≥ | 90 | 90 | 100 | 100 |
| @1500°×2hPermanent Linear Change(%) | +0.1-0.1 | +0.1-0.1 | +0.1-0.1 | +0.1-0.1 |
| @0.2MPa ≥Refractoriness Under Load(℃) | 1700 | 1700 | 1700 | 1700 |
| Al2O3(%) ≥ | 80 | 85 | 90 | 99 |
| Fe2O3(%) ≤ | 0.3 | 0.3 | 0.2 | 0.1 |