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China Suppliers Factory for High-Quality Chrome Corundum Brick in Glass Industry & Metallurgy
Core Advantages
Superior Corrosion Resistance
Rich in Cr₂O₃ and high-purity Al₂O₃, it effectively resists erosion from molten metals, slags, and chemical media, avoiding premature brick damage in harsh environments.
Excellent Thermal Stability
Withstands rapid temperature changes and maintains structural integrity at temperatures up to 1790℃, suitable for intermittent and continuous high-temperature operations.
High Density & Mechanical Strength
Low porosity (≤18%) and high compressive strength (≥120MPa) ensure strong load-bearing capacity, reducing deformation and extending service life compared to ordinary refractory bricks.
Environmentally Friendly & Compliant
Manufactured with non-toxic raw materials, meets ISO and ASTM standards, ensuring safe use in food-related and high-standard industrial production.
Product Parameters
| Item | Chrome-Corundum Brick | ||
| Cr₂O₃ % | ≥60 | ≥30 | ≥12 |
| Al₂O₃ % | ≥38 | ≥68 | ≥80 |
| Fe₂O₃ % | ≤0.20 | ≤0.20 | ≤0.50 |
| Apparent Porosity % | ≤14 | ≤16 | ≤18 |
| Bulk Density (g/cm³) | ≥3.63 | ≥3.53 | ≥3.30 |
| Cold Crushing Strength (MPa) | ≥130 | ≥130 | ≥120 |
| Refractoriness Under Load ℃ (0.2MPa, 0.6%) | ≥1700 | ≥1700 | ≥1700 |
| Permanent Linear Change % (1600℃ × 3h) | ±0.2 | ±0.2 | ±0.2 |
Detailed Application Scenarios
1. Metallurgy Industry
Widely used in electric arc furnaces, ladles, tundishes, and converter linings. It resists erosion from molten steel, iron, and metallurgical slags, ensuring stable operation of smelting equipment. Particularly suitable for stainless steel and special alloy smelting, where high corrosion resistance is required.
2. Glass Industry
Applied in glass melting furnaces, especially in the throat, breast wall, and bottom parts. It withstands high temperatures and corrosion from molten glass and volatile substances, preventing glass liquid contamination and extending the furnace's service life, which is crucial for continuous glass production.
3. Chemical Industry
Ideal for high-temperature reactors, incinerators, and catalytic cracking equipment. It resists corrosion from acidic, alkaline, and organic chemical media, maintaining structural stability in harsh chemical reaction environments, and is widely used in petrochemical and fine chemical production.
4. Other High-Temperature Fields
Also used in ceramic kilns, cement rotary kiln burning zones, and waste incineration plants. Its excellent thermal stability and wear resistance adapt to different high-temperature working conditions, reducing maintenance frequency and production downtime.
Conclusion
Contact us now for a quote and experience the difference of working with the best in the business.
Frequently Asked Questions
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What is Chrome-Corundum brick and what are its main components?
Chrome-Corundum brick is a high-performance refractory material composed primarily of Cr₂O₃ and high-purity Al₂O₃. Depending on the grade, Cr₂O₃ content ranges from ≥12% to ≥60%, while Al₂O₃ content ranges from ≥38% to ≥80%, providing outstanding corrosion resistance and thermal stability for demanding industrial applications.
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What is the maximum operating temperature for Chrome-Corundum bricks?
Chrome-Corundum bricks can withstand temperatures up to 1790℃ while maintaining structural integrity. Their refractoriness under load (0.2MPa, 0.6%) is ≥1700℃, making them suitable for both intermittent and continuous high-temperature industrial operations.
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Which industries are Chrome-Corundum bricks most commonly used in?
Chrome-Corundum bricks are widely used across metallurgy (electric arc furnaces, ladles, tundishes), the glass industry (melting furnaces, throat, breast wall), the chemical industry (reactors, incinerators, catalytic cracking units), as well as ceramic kilns, cement rotary kilns, and waste incineration plants.
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How does the porosity of Chrome-Corundum brick affect its performance?
Low apparent porosity (≤14% to ≤18% depending on grade) means fewer internal voids, which significantly reduces the penetration of molten metals, slags, and corrosive chemicals into the brick structure. This directly extends service life and maintains the mechanical integrity of furnace linings under extreme conditions.
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Are Chrome-Corundum bricks compliant with international safety and environmental standards?
Yes. Chrome-Corundum bricks are manufactured using non-toxic raw materials and comply with ISO and ASTM international standards. This ensures they are safe for use in food-related processing environments as well as high-standard industrial production facilities that require strict material certifications.
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How do Chrome-Corundum bricks compare to ordinary refractory bricks in terms of lifespan?
Chrome-Corundum bricks significantly outperform ordinary refractory bricks due to their high bulk density (up to ≥3.63 g/cm³), high cold crushing strength (≥120–130 MPa), and superior corrosion resistance. These properties reduce deformation, minimize maintenance downtime, and extend the overall service life of high-temperature industrial equipment.