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High-Purity Corundum Brick for Industrial Furnaces - Reliable China Suppliers & Factory Solutions
Core Advantages
Superior Heat Stability
Withstands continuous high temperatures up to 1790°C and sudden temperature changes, avoiding cracking or deformation. Its low thermal expansion coefficient ensures long-term structural integrity in extreme heat environments.
High Purity & Hardness
Alumina (Al₂O₃) content ≥90%, featuring high density (≥3.2g/cm³) and Mohs hardness ≥9. Resists wear, scouring, and erosion from molten metals, slags, and chemical media.
Long Service Life
Advanced sintering technology improves compactness and reduces porosity, minimizing oxidation and corrosion. Extends equipment lining lifespan compared to ordinary refractory bricks, lowering replacement frequency.
Product Parameters
| Item | High Quality and High Purity Corundum Brick | Sinter Corundum Brick |
| Al₂O₃ % | ≥99 | ≥90 |
| SiO₂ % | ≤0.2 | ≤8 |
| Fe₂O₃ % | ≤0.2 | ≤0.2 |
| Bulk Density (g/cm³) | ≥3.2 | ≥3 |
| Apparent Porosity (%) | ≤19 | ≤18 |
| Cold Crushing Strength (MPa) | ≥100 | ≥100 |
| Refractoriness Under Load ℃ (0.2MPa, 0.6%) | ≥1700 | ≥1700 |
Detailed Application Scenarios
1
Metallurgy Industry
◎ Widely used in lining of electric arc furnaces, ladles, tundishes, and blast furnace hot blast stoves. Resists erosion from molten steel, iron, and metallurgical slags, ensuring stable operation of smelting equipment and improving metal product quality.
2
Ceramics & Glass Industry
◎ Suitable for kiln linings, sintering zones, and soaking zones of ceramic tile kilns, glass melting furnaces, and quartz crucible sintering furnaces. Withstands high-temperature sintering and chemical corrosion from glass melts, maintaining kiln tightness.
3
Chemical Industry
◎ Applied in lining of chemical reactors, incinerators, and acid-base resistant equipment. Resists corrosion from strong acids, alkalis, and organic media, ensuring safe and continuous operation of chemical production processes.
4
Other High-Temperature Fields
◎ Ideal for waste incineration plants, thermal power plant boilers, and aerospace component heat treatment furnaces. Adapts to complex high-temperature, high-corrosion environments, reducing equipment maintenance costs and downtime.
Conclusion
Contact us now for a quote and experience the difference of working with the best in the business.
Frequently Asked Questions
Q
What is the maximum operating temperature of corundum bricks?
Corundum bricks can withstand continuous high temperatures up to 1790°C, making them suitable for the most demanding high-temperature industrial applications including electric arc furnaces, glass melting furnaces, and aerospace heat treatment equipment.
Q
What is the difference between High Purity Corundum Brick and Sinter Corundum Brick?
High Purity Corundum Brick contains Al₂O₃ ≥99% with a bulk density ≥3.2 g/cm³, offering superior purity and performance. Sinter Corundum Brick contains Al₂O₃ ≥90% with a bulk density ≥3.0 g/cm³, providing excellent performance at a more economical level. Both achieve cold crushing strength ≥100 MPa and refractoriness under load ≥1700°C.
Q
Which industries are corundum bricks most commonly used in?
Corundum bricks are widely used across the metallurgy industry (electric arc furnaces, ladles, tundishes), ceramics and glass industry (kiln linings, glass melting furnaces), chemical industry (reactors, incinerators), as well as waste incineration plants, thermal power boilers, and aerospace heat treatment furnaces.
Q
How does the advanced sintering technology improve corundum brick performance?
Advanced sintering technology significantly improves the compactness of corundum bricks and reduces porosity. This minimizes oxidation and corrosion during use, extending the equipment lining lifespan and reducing the frequency of replacement, ultimately lowering maintenance costs.
Q
Can corundum bricks resist chemical corrosion from acids and alkalis?
Yes. Corundum bricks are highly resistant to corrosion from strong acids, alkalis, and organic media, making them ideal for use in chemical reactor linings, incinerators, and acid-base resistant equipment to ensure safe and continuous production operations.
Q
How can I get a customized quote for corundum bricks?
You can submit your inquiry directly through our contact form above by providing details such as your required brick type, dimensions, quantity, and application environment. Our team will respond promptly with a tailored quote to meet your specific project requirements.