Corundum brick is a refractory brick with corundum as its main crystalline phase. It is white in color. Its working temperature reaches 1800°C. It has excellent thermal shock stability and chemical stability. Kerui Refractory provides different specifications and customized bricks.
- Al2O3: ≥80-99.3%;
- Fe2O3: 0.10-0.3%;
- Refractoriness Under Load: 1700ºC;
- Bulk Density: 2.9-3.25g/cm³;
- Cold Crushing Strength: 90-120MPa;
- Apparent Porosity: 19-20%.
What is Corundum Brick?
Corundum bricks are high temp refractory bricks made from corundum through sintering or electric melting processes. The corundum is a mineral form of aluminum oxide (Al2O3). It boasts a high aluminum oxide content of over 99%. So, the brick is characterized by exceptional hardness, mechanical strength, and refractoriness.
Corundum bricks can be combined with other mineral materials to create composite refractory bricks, such as chrome corundum bricks, zirconia corundum bricks, corundum mullite bricks, etc. These composite bricks offer superior performance and structure. These features make them ideal for various high-temperature industrial applications. Kerui Refractory, as a manufacturer, provides partners with high-quality bricks and tailored corundum brick solutions.
Parameters of Kerui Corundum Brick
| Item | GYZ-99 | GYZ-90 | GYZ-80 | |
|---|---|---|---|---|
| Al2O3, % | ≥ | 99 | 90 | 80 |
| SiO2, % | ≤ | 0.2 | 8 | 18 |
| Fe2O3, % | ≤ | 0.2 | 0.2 | 0.3 |
| Bulk Density, g/cm3 | ≥ | 3.2 | 3 | 2.8 |
| Apparent Porosity, % | ≤ | 19 | 18 | 18 |
| Cold Crushing Strength, MPa | ≥ | 100 | 100 | 100 |
| 0.2MPa Refractoriness Under Load, ℃ | ≥ | 1700 | 1700 | 1700 |
Different Shapes of Kerui Corundum Brick
In addition to standard straight corundum bricks, we also provide the following special brick types, including universal arc bricks, anchor bricks, half bricks, knife-axe bricks, etc.
Advantages of Kerui Corundum Brick
- High refractoriness: Corundum bricks exhibit exceptional refractoriness. Corundum is among the most refractory materials available. So, the brick has a load-softening temperature exceeding 1700°C.
- High mechanical strength: These bricks possess remarkable hardness. They boast a cold-pressing strength of up to 340 MPa. This translates to superior load-bearing capacity in high-temperature applications.
- Excellent thermal insulation: Corundum bricks feature low thermal conductivity. They provides exceptional thermal insulation and heat retention properties.
- Strong resistance to chemical corrosion: Even at high temperatures, corundum bricks remain unaffected by acidic and alkaline chemically corrosive media. Therefore, it enables long-term use in harsh chemical environments.
Applications of Kerui Corundum Brick
Due to their exceptional refractoriness and chemical stability, corundum bricks find extensive applications in high-temperature industrial environments. They are commonly employed as linings for critical components within high-temperature furnaces, steel ladles, furnace linings, pipes, rails and so on.
- Iron and steel metallurgy: Steelmaking furnaces, non-ferrous metal smelting furnaces, heating furnaces, blast furnaces, hot blast stoves, and so on.
- Construction materials industry: Glass melting furnaces, cement kilns, lime kilns, ceramic kilns, and so on.
- Petrochemical industry: Petrochemical furnaces, reactors, refining furnaces, ammonia synthesis furnaces, and so on.
- Power industry: Waste incineration furnaces, and so on.