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High-Quality Chrome Corundum Bricks from China Suppliers | Durable Refractories for Glass & Metallurgy Factory
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
Q What is Chrome-Corundum brick and what are its main components?
Chrome-Corundum brick is a high-performance refractory material composed primarily of Cr₂O₃ (chromium oxide) and Al₂O₃ (aluminum oxide). Depending on the grade, Cr₂O₃ content ranges from ≥12% to ≥60%, while Al₂O₃ content ranges from ≥38% to ≥80%. These two oxides work synergistically to provide exceptional corrosion resistance, thermal stability, and mechanical strength in extreme industrial environments.
Q What is the maximum operating temperature for Chrome-Corundum brick?
Chrome-Corundum brick can withstand temperatures up to 1790℃ while maintaining structural integrity. Its refractoriness under load (0.2MPa, 0.6%) is ≥1700℃, making it highly suitable for both intermittent and continuous high-temperature industrial operations such as steel smelting, glass melting, and chemical processing.
Q Which industries are Chrome-Corundum bricks most commonly used in?
Chrome-Corundum bricks are widely used across multiple high-temperature industries. Key applications include the metallurgy industry (electric arc furnaces, ladles, tundishes, converter linings), the glass industry (melting furnaces, throat, breast wall, and bottom sections), the chemical industry (reactors, incinerators, catalytic cracking units), as well as ceramic kilns, cement rotary kilns, and waste incineration plants.
Q How does Chrome-Corundum brick compare to ordinary refractory bricks in terms of strength and durability?
Chrome-Corundum brick significantly outperforms ordinary refractory bricks in key mechanical properties. It features a low apparent porosity (≤18%), a high bulk density (up to ≥3.63 g/cm³), and a cold crushing strength of ≥120–130 MPa. These properties result in superior load-bearing capacity, reduced deformation under thermal stress, and a considerably longer service life, lowering overall maintenance and replacement costs.
Q Is Chrome-Corundum brick safe for use in food-related or environmentally sensitive applications?
Yes. Chrome-Corundum brick is manufactured using non-toxic raw materials and complies with ISO and ASTM international standards. Its low Fe₂O₃ content (≤0.20%–0.50%) minimizes contamination risks. This makes it suitable for use in food-related high-temperature processing as well as in environmentally regulated industrial production environments.
Q What grade of Chrome-Corundum brick should I choose for my specific application?
The optimal grade depends on the specific working conditions of your application. For environments requiring maximum corrosion resistance — such as stainless steel smelting or direct contact with aggressive slags — the high-Cr₂O₃ grade (≥60%) with a bulk density of ≥3.63 g/cm³ is recommended. For glass furnaces and chemical reactors, medium grades (≥30% Cr₂O₃) are often sufficient. For general high-temperature structural applications, the standard grade (≥12% Cr₂O₃) provides an excellent balance of performance and cost. Please contact us with your specific requirements for a tailored recommendation.