Description
High-purity corundum bricks are predominantly composed of high-purity raw materials and ultra-fine powder, which undergo high-pressure forming and high-temperature sintering. These bricks find extensive use in critical sections of kilns within industries like steel, petrochemicals, non-ferrous metals, electronics, and others. They exhibit exceptional features, including high-temperature resistance, high strength, corrosion resistance, erosion resistance, and more.
Features of High-Purity Corundum Bricks:
- Load softening temperature surpassing 1700℃.
- Good chemical stability and high compression strength.
- Strong slag resistance, including resistance against glass solutions.
- Excellent thermal shock stability and erosion resistance.
- High compression strength.
- Low high-temperature creep rate and minimal thermal expansion coefficient.
Applications of High-Purity Corundum Bricks:
- Blast furnaces and blast furnace hot blast stoves.
- Furnace refining furnaces and sliding water apparatus.
- Glass furnaces.
- Petrochemical industrial furnaces.
- Cracking in the petrochemical and chemical fertilizer industries, including high-temperature transformation furnaces, metallurgical furnace linings, and kiln furniture.
Technique Data
| Item | Index |
| Al2O3 % | ≥99 |
| SiO2 % | ≤0.15 |
| Fe2O3 % | ≤0.12 |
| Bulk Density g/cm3 | ≥3.2 |
| Apparent Porosity % | ≤16 |
| Cold Crushing Strength MPa | ≥100 |
| 0.2Mpa Refractoriness Under Load ℃ | ≥1700 |
| Permanent Linear Change Rate % 1600℃×3h | ±0.2 |
| Thermal shock resistance cycle 1100℃water cooling | ≥5 |
