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High Alumina Brick for Industrial Furnaces | China Suppliers & Factory | Heat Resistance up to 1790℃
Core Advantages
Exceptional Heat Resistance
With a maximum working temperature of 1790℃ and low thermal conductivity, it effectively insulates heat and maintains structural integrity under extreme high-temperature conditions, avoiding deformation or cracking.
Strong Corrosion & Abrasion Resistance
High alumina content enhances resistance to molten slag, acid-alkali media, and mechanical abrasion, extending service life in harsh industrial environments.
High Structural Density
Produced by high-pressure molding and high-temperature sintering, it has low porosity, strong load-bearing capacity, and good thermal shock resistance, reducing replacement frequency.
Cost-Effective Solution
Long service life and low maintenance requirements lower overall operational costs, providing high cost performance for large-scale industrial projects.
Product Parameters
| Item | High Alumina Brick | ||
|---|---|---|---|
| Al₂O₃ % | ≥75 | ≥65 | ≥55 |
| Fe₂O₃ % | ≤2.0 | ≤2.30 | ≤2.30 |
| Apparent Porosity % | ≤23 | ≤22 | ≤20 |
| Permanent Linear Change % 1500℃ × 2h |
±0.1/-0.3 | ±0.1/-0.4 | ±0.2/-0.5 |
| Cold Crushing Strength MPa | ≥75 | ≥65 | ≥55 |
| Refractoriness ℃ | ≥1790 | ≥1770 | ≥1770 |
| Refractoriness Under Load ℃ (0.2MPa, 0.6%) |
≥1520 | ≥1500 | ≥1470 |
Detailed Application Scenarios
1
Steel Industry
◎ Widely used in blast furnaces, converters, electric furnaces, and ladles. Suitable for linings of tapping troughs, slag channels, and furnace tops, resisting molten steel and slag erosion, ensuring stable production of steelmaking equipment.
2
Cement Industry
◎ Applied to linings of rotary kilns, preheaters, and cement clinker coolers. Withstands high temperature and alkaline gas corrosion, improving the service life of cement production equipment and reducing downtime.
3
Glass Industry
◎ Used in glass melting furnaces, regenerators, and flue linings. Resists high-temperature glass liquid erosion and thermal shock, maintaining furnace tightness and ensuring consistent glass quality.
4
Petrochemical Industry
◎ Suitable for linings of catalytic crackers, reformers, and hydrogenation furnaces. Resists high-temperature oil gas and chemical media corrosion, ensuring safe and efficient operation of petrochemical equipment.
5
Other Industries
◎ Also applicable to waste incinerators, ceramic kilns, and non-ferrous metal smelting furnaces, providing reliable refractory solutions for various high-temperature industrial scenarios.
Conclusion
Contact us now for a quote and experience the difference of working with the best in the business.
Frequently Asked Questions
What is the maximum working temperature of High Alumina Brick?
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High Alumina Brick with Al₂O₃ content ≥75% has a maximum refractoriness of ≥1790℃, making it suitable for the most demanding high-temperature industrial applications such as blast furnaces, electric arc furnaces, and glass melting furnaces.
What are the different grades of High Alumina Brick available?
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High Alumina Bricks are available in three primary grades based on Al₂O₃ content: ≥75%, ≥65%, and ≥55%. Each grade offers different levels of refractoriness, cold crushing strength, and load-bearing performance to suit various industrial requirements.
Which industries are High Alumina Bricks most commonly used in?
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High Alumina Bricks are widely used across the steel, cement, glass, and petrochemical industries. They are also applied in waste incinerators, ceramic kilns, and non-ferrous metal smelting furnaces wherever high-temperature resistance and chemical stability are required.
How does High Alumina Brick resist corrosion from slag and chemical media?
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The high alumina (Al₂O₃) content significantly improves chemical inertness, enabling the brick to withstand attack from molten slag, acid-alkali media, and chemical vapors. The dense microstructure produced through high-pressure molding and sintering further reduces penetration of corrosive substances.
What is the apparent porosity of High Alumina Brick and why does it matter?
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Apparent porosity ranges from ≤20% to ≤23% depending on the grade. Lower porosity means fewer internal voids, which translates to higher density, better load-bearing capacity, improved resistance to slag infiltration, and longer overall service life in high-temperature environments.
How can I get a custom quote for High Alumina Bricks for my project?
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You can submit your inquiry directly through the contact form above. Please include details such as required Al₂O₃ grade, quantity, application scenario, and any specific dimensional or performance requirements. Our technical team will respond with a tailored solution and competitive pricing.