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High Alumina Brick for Industrial Furnaces – Premium China Suppliers & Factory with High Heat Resistance
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?
High Alumina Brick with Al₂O₃ content ≥75% offers 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?
We offer three primary grades based on Al₂O₃ content: ≥75%, ≥65%, and ≥55%. Each grade is tailored to specific temperature ranges and application requirements, balancing performance and cost-effectiveness for various industrial scenarios.
How does High Alumina Brick resist corrosion from molten slag and chemicals?
The high alumina content creates a dense microstructure with low apparent porosity (≤20–23%), which significantly limits the penetration of molten slag, acid-alkali media, and chemical agents. This dense structure, combined with high cold crushing strength (≥55–75 MPa), ensures long-term resistance in corrosive industrial environments.
Which industries most commonly use High Alumina Brick?
High Alumina Brick is widely used across the steel, cement, glass, and petrochemical industries. It is also applied in waste incinerators, ceramic kilns, and non-ferrous metal smelting furnaces — anywhere that extreme heat, chemical exposure, or mechanical stress demands a reliable refractory lining.
How is High Alumina Brick manufactured to achieve its high density?
High Alumina Brick is produced through high-pressure molding followed by high-temperature sintering. This manufacturing process minimizes internal porosity, maximizes load-bearing capacity, and enhances thermal shock resistance — all of which contribute to a longer service life and reduced maintenance frequency in industrial furnaces.
What makes High Alumina Brick a cost-effective choice for large-scale projects?
The extended service life and low maintenance requirements of High Alumina Brick significantly reduce overall operational costs. Fewer replacements mean less downtime and lower labor costs, making it a highly economical solution for large-scale industrial projects where continuous, reliable furnace operation is critical.