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Andalusite Brick for Industrial Furnaces & Kilns - High-Quality China Suppliers & Factory Products
Core Advantages
🔥 Strong Heat Resistance
High-purity endows this andalusite brick with a refractoriness under load (RUL) over 1600°C, enabling it to maintain structural stability in extreme high-temperature environments without deformation or performance degradation.
❄️ Superior Thermal Shock Resistance
Its low thermal expansion coefficient prevents the andalusite brick from cracking due to rapid temperature changes, greatly prolonging its service life in frequent cyclic heating-cooling scenarios.
💪 High Mechanical Strength
The dense sintered structure enhances wear resistance, effectively resisting erosion from molten metals, slags, and corrosive industrial gases, outperforming ordinary refractory bricks in harsh working conditions.
💰 Cost-Effective Performance
The longer service life of our andalusite brick significantly reduces replacement frequency and maintenance downtime, cutting overall operational costs for industrial enterprises in the long run.
Product Parameters
| Item | Sillimanite Brick | Sillimanite Brick | Andalusite Brick |
| Al₂O₃ % | ≥65 | ≥60 | ≥53 |
| SiO₂ % | ≤32 | ≤37 | - |
| Fe₂O₃ % | ≤0.6 | ≤1.0 | ≤1.7 |
| Bulk Density (g/cm³) | ≥2.50 | ≥2.30 | ≥2.40 |
| Apparent Porosity (%) | ≤18 | ≤19 | ≤20 |
| Cold Crushing Strength (MPa) | ≥80 | ≥80 | ≥60 |
| Refractoriness Under Load ℃ (0.2MPa, 0.6%) | ≥1650 | ≥1650 | ≥1600 |
Detailed Application Scenarios
1
⚙️ Metallurgy
◎ Widely used in blast furnace linings (e.g., Baoshan Iron & Steel's 5500m³ blast furnace) and regenerative heating furnaces, efficiently resisting molten slag erosion and reducing production interruptions.
2
🏺 Ceramic / Glass
◎ Applied to glass furnace regenerators and ceramic kiln walls/floors. It meets Class I alkali vapor resistance standards, avoiding product contamination in high-temperature cyclic operations and ensuring stable product quality.
3
🛢️ Petrochemical
◎ Ideal for lining cracking furnaces and catalytic reformers. With a low weight loss rate (0.42%/1000h at 1200℃), it withstands corrosive high-temperature gases in reducing atmospheres, guaranteeing equipment safety and longevity.
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.
5
🏗️ Building Materials
◎ Adopted in Baosteel's No.2 lime rotary kiln, replacing spinel bricks to lower kiln shell temperature by 15–20℃, improve kiln skin adhesion, and enhance operational safety and production efficiency.
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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QWhat is the maximum service temperature of andalusite brick?
Andalusite brick has a refractoriness under load (RUL) of over 1600°C (at 0.2 MPa, 0.6% deformation), making it suitable for sustained use in extreme high-temperature industrial environments without structural deformation.
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QHow does andalusite brick compare to ordinary refractory bricks?
Andalusite brick features a denser sintered structure, lower thermal expansion coefficient, and superior wear and slag resistance compared to ordinary refractory bricks, resulting in a significantly longer service life and lower total maintenance cost in harsh industrial conditions.
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QWhich industries are andalusite bricks most commonly used in?
Andalusite bricks are widely applied across metallurgy (blast furnace linings), ceramics and glass (kiln walls, regenerators), petrochemicals (cracking furnaces, catalytic reformers), cement rotary kilns, waste incineration plants, and building materials manufacturing.
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QWhat is the difference between sillimanite brick and andalusite brick?
Both are aluminosilicate refractories, but sillimanite bricks generally have higher Al₂O₃ content (≥60–65%) and higher cold crushing strength (≥80 MPa) and RUL (≥1650°C). Andalusite bricks (Al₂O₃ ≥53%) offer excellent thermal shock resistance and cost-effectiveness for applications requiring cyclic temperature changes.
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QCan andalusite bricks be used in reducing atmospheres?
Yes. Andalusite bricks exhibit excellent chemical stability in reducing atmospheres, with a low weight loss rate of only 0.42% per 1000 hours at 1200℃, making them ideal for petrochemical cracking furnaces and catalytic reformers.
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QHow do I request a quote or get more product information?
You can fill out the contact form on this page with your project requirements, including application type, quantity, and any specific performance needs. Our technical team will respond promptly with a tailored product recommendation and competitive quote.