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High Alumina Brick for Industrial Furnaces - China Suppliers & Factory Offering High-Quality Refractory Solutions
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
High Alumina Brick can withstand a maximum working temperature of up to 1790℃ (for grades with Al₂O₃ ≥75%), making it suitable for extreme high-temperature industrial applications such as steelmaking furnaces, glass melting furnaces, and cement kilns.
High Alumina Brick is available in three standard grades based on Al₂O₃ content: ≥75%, ≥65%, and ≥55%. Higher alumina content generally provides better heat resistance, lower porosity, and greater cold crushing strength.
High Alumina Brick is widely used in the steel industry (blast furnaces, converters, ladles), cement industry (rotary kilns, preheaters), glass industry (melting furnaces, regenerators), petrochemical industry (catalytic crackers, reformers), as well as waste incinerators, ceramic kilns, and non-ferrous metal smelting furnaces.
High Alumina Brick is produced through a high-pressure molding process combined with high-temperature sintering. This manufacturing method results in low porosity (as low as ≤20%), high cold crushing strength (≥55 MPa), excellent load-bearing capacity, and superior thermal shock resistance.
The elevated alumina (Al₂O₃) content in High Alumina Brick provides strong chemical stability against molten slag, acid and alkali media, and mechanical abrasion. This makes it highly durable in harsh industrial environments where conventional refractory materials would fail prematurely.
High Alumina Brick offers an extended service life due to its exceptional heat resistance, low porosity, and strong corrosion resistance. This reduces the frequency of replacements and associated downtime, lowering overall operational and maintenance costs — making it a highly cost-effective choice for large-scale industrial projects.