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Mullite Brick with Excellent Thermal Shock Resistance
Core Advantages
Exceptional High-Temperature Stability
With refractoriness up to 1790℃ and load softening temperature 1600-1700℃, they maintain structural integrity under extreme heat, ensuring long service life.
Superior Thermal Shock Resistance
resisting cracking from rapid temperature changes, suitable for intermittent operation furnaces.
Strong Corrosion & Wear Resistance
Resists most acid slags, chemical attack, and oxidation, with high cold crushing strength (70-260 MPa) for erosion-prone environments.
Low Thermal Conductivity
Reduces heat loss, improving energy efficiency of industrial kilns while ensuring stable temperature distribution.
Customizable Specifications
Available in sintered/fused cast types and various sizes, tailored to specific furnace structures and working conditions.
Product Parameters
| Item | Sintered Mullite brick | ||
| Al₂O₃ % | ≥75-80 | ≥72-75 | ≥70 |
| Fe₂O₃ % | ≤1.2 | ≤1.2 | ≤2.0 |
| g/cm³ Bulk Density |
≥2.70 | ≥2.65 | ≥2.65 |
| % Apparent Porosity |
≤18 | ≤19 | ≤20 |
| MPa Cold Crushing Strength |
≥90 | ≥90 | ≥70 |
| ℃（0.2MPa,0.6%） Refractoriness Under Load |
≥1650 | ≥1650 | ≥1530 |
| 0.2Mpa（1400℃*50h) % Creep Rete |
≤0.8 | ≤0.8 | ≤0.8 |
Detailed Application Scenarios
1. Metallurgy Industry
◎ Applied in hot blast furnace roofs, blast furnace stacks and bottoms, torpedo tanker slag line areas, and hot air channel hanging parts. Resists iron liquid scouring and high-temperature furnace atmospheres, ensuring stable operation of metallurgical equipment.
2. Petrochemical Industry
◎ Suitable for slag gasification furnaces, synthetic ammonia conversion furnaces, carbon black reactors, and cracking furnace linings. Withstands chemical corrosion from reaction media and high-temperature creep, extending furnace service life.
3. Glass & Ceramic Industry
◎ Used in glass melting furnace regenerative chambers, clarification tank walls, ceramic tunnel kilns, roller kilns, and kiln furniture. Features low thermal conductivity and excellent thermal stability, adapting to continuous high-temperature working conditions.
4. Building Materials & Other Industries
◎ Ideal for rotary cement kilns, lime kiln inner linings, heat treatment furnaces, and resistance furnaces. Available as lightweight insulation bricks for backing linings and standard bricks for fire-facing surfaces, meeting diverse insulation and load-bearing needs.
5. Product Type
◎ Sintered Mullite Bricks: Cost-effective with balanced performance, suitable for general high-temperature kiln linings like ceramic kilns and hot blast stoves.
◎ Fused Cast Mullite Bricks: Higher purity and density, superior erosion resistance, ideal for harsh environments like glass kiln key parts and acid slag contact areas.
Conclusion
Contact us now for a quote and experience the difference of working with the best in the business.