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1. Product Overview of Kerui Corundum Mullite Brick
Kerui’s Corundum Mullite Brick is an advanced refractory material engineered for superior performance in high-temperature industrial environments. Composed of corundum (α-Al₂O₃) and mullite (3Al₂O₃·2SiO₂) phases, this brick combines exceptional thermal stability (up to 1,750°C), mechanical strength, and chemical resistance. Ideal for demanding applications in metallurgy, glass manufacturing, and petrochemical processing, it ensures extended service life and operational efficiency.
2. Performance Indicators of Kerui Corundum Mullite Brick
Technical Highlights
- High Alumina Content: Optimized Al₂O₃/SiO₂ ratio for enhanced refractoriness.
- Low Thermal Expansion: Maintains structural integrity under rapid temperature fluctuations.
- Superior Erosion Resistance: Withstands acidic/alkaline slags and molten metals.
| Parameter | Value Range | Test Standard |
|---|---|---|
| Al₂O₃ Content | 75–90% | XRF Analysis |
| Apparent Porosity | 12–18% | ASTM C20 |
| Cold Crushing Strength (CCS) | 80–150 MPa | ASTM C133 |
| Refractoriness Under Load (RUL) | 1,650–1,750°C | ASTM C113 |
| Thermal Shock Resistance | >25 cycles (1,100°C water quench) | ASTM C1171 |
| Thermal Conductivity | 1.5–2.2 W/m·K | ASTM C201 |
3. Feature of Kerui Corundum Mullite Brick
3.1 Extreme Temperature Resistance
- Operates continuously at 1,650–1,750°C, ideal for direct flame exposure zones.
- Minimal linear expansion (<0.3%) ensures dimensional stability.
3.2 Mechanical Durability
- High CCS (≥80 MPa) resists abrasion from high-velocity particle flows.
- Interlocking crystal structure enhances fracture toughness.
3.3 Chemical Inertness
- Stable in pH 2–12 environments, resisting alkali/sulfur corrosion and molten metal penetration.
- Low porosity (<18%) minimizes slag infiltration.
3.4 Customizable Solutions
- Available in standard shapes (rectangular, arch, wedge) or custom geometries.
- Optional zirconia reinforcement for improved thermal shock resistance.
4. Industrial Applications of Kerui Corundum Mullite Brick
4.1 Steel & Non-Ferrous Metallurgy
- Ladle Linings: Withstands molten steel/aluminum temperatures up to 1,700°C.
- Blast Furnace Hearth: Resists iron/slag erosion in high-wear zones.
4.2 Glass Manufacturing
- Glass Tank Regenerators: Low thermal conductivity reduces energy loss.
- Crown & Sidewalls: Maintains stability in 1,600°C+ environments.
4.3 Petrochemical
- Cracking Furnaces: Resists alkali vapor (K/Na) in ethylene production units.
- Reformer Linings: Durable performance in hydrogen-rich atmospheres.
4.4 Cement & Lime Kilns
- Transition Zones: Combines thermal shock resistance with clinker liquid phase tolerance.
- Burner Tiles: Withstands cyclic heating in calciner systems.
Why Choose Kerui Corundum Mullite Bricks?
- Backed by ISO 9001 certification and 15+ years of refractory expertise.
- Custom-engineered formulations for specific temperature/chemical challenges.
- Global logistics support with bulk order optimization.
For technical specifications or custom requests, contact our engineering team today.
