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High-Purity Corundum Brick Suppliers in China - Durable Industrial Furnace 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
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
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
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
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
What is the maximum operating temperature of Corundum Bricks?
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Corundum Bricks can withstand continuous high temperatures up to 1790°C. Their low thermal expansion coefficient and superior heat stability ensure structural integrity even under sudden or extreme temperature changes, making them ideal for the most demanding high-temperature industrial applications.
What is the Al₂O₃ content in your Corundum Bricks?
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Our High Quality and High Purity Corundum Bricks contain Al₂O₃ ≥99%, while our Sinter Corundum Bricks contain Al₂O₃ ≥90%. Both grades feature high density and Mohs hardness ≥9, providing excellent resistance to wear, scouring, and chemical erosion.
Which industries are Corundum Bricks most suitable for?
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Corundum Bricks are widely used across metallurgy (electric arc furnaces, ladles, tundishes), ceramics and glass manufacturing (kiln linings, glass melting furnaces), chemical industry (reactors, incinerators), and other high-temperature fields such as waste incineration plants, thermal power boilers, and aerospace heat treatment furnaces.
How do Corundum Bricks compare to ordinary refractory bricks in terms of service life?
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Thanks to advanced sintering technology that improves compactness and reduces porosity, Corundum Bricks significantly extend equipment lining lifespan compared to ordinary refractory bricks. This reduces replacement frequency, lowers maintenance costs, and minimizes production downtime.
What is the Cold Crushing Strength and Refractoriness Under Load of your products?
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Both our High Purity Corundum Bricks and Sinter Corundum Bricks achieve a Cold Crushing Strength of ≥100 MPa and a Refractoriness Under Load of ≥1700°C (at 0.2MPa, 0.6%), ensuring reliable structural performance under high mechanical and thermal stress conditions.
Can Corundum Bricks resist chemical corrosion from acids, alkalis, and molten metals?
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Yes. Corundum Bricks exhibit outstanding resistance to corrosion from strong acids, alkalis, organic media, molten metals, and metallurgical slags. This makes them a reliable choice for chemical reactors, incinerators, ladle linings, and any environment involving aggressive chemical or molten media exposure.