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High-Purity Corundum Bricks from China Suppliers - Durable Industrial Furnace Linings from Trusted Factory
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 and glass melting furnaces.
Q What is the minimum Al₂O₃ content in your corundum bricks?
Our Sinter Corundum Brick contains ≥90% Al₂O₃, while the High Quality and High Purity Corundum Brick contains ≥99% Al₂O₃, ensuring superior chemical resistance and mechanical performance.
Q Are corundum bricks suitable for chemical industry applications?
Yes. Corundum bricks are widely used in chemical reactors, incinerators, and acid-base resistant equipment. They resist corrosion from strong acids, alkalis, and organic media, ensuring safe and continuous chemical production.
Q How do corundum bricks compare to ordinary refractory bricks in terms of service life?
Thanks to advanced sintering technology that improves compactness and reduces porosity, corundum bricks significantly extend equipment lining lifespan compared to ordinary refractory bricks, reducing replacement frequency and overall maintenance costs.
Q What is the cold crushing strength of your corundum bricks?
Both our High Purity Corundum Brick and Sinter Corundum Brick achieve a Cold Crushing Strength of ≥100 MPa, providing excellent structural durability under heavy mechanical loads and thermal stress.
Q Can corundum bricks be used in the ceramics and glass industry?
Absolutely. Corundum bricks are ideal for kiln linings, sintering zones, and soaking zones in ceramic tile kilns, glass melting furnaces, and quartz crucible sintering furnaces, withstanding high-temperature sintering and chemical corrosion from glass melts.