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Fused Re-sintered Corundum Mullite Bricks from China Factory - High-Performance Suppliers for Extreme Conditions
Core Advantages
Advanced Fused Re-sintering Craft
Adopts state-of-the-art production technology, forming a dense and uniform internal structure that enhances product stability and durability, far exceeding ordinary corundum mullite bricks in service life.
Excellent Thermal Shock Resistance
Low thermal expansion coefficient, can withstand frequent rapid temperature changes (1100℃ water quenching ≥20 times) without cracking or spalling, adapting to complex working conditions of industrial furnaces.
High Strength & Dense Structure
Room temperature compressive strength ≥130MPa, apparent porosity ≤18%, ensuring good impermeability and load-bearing capacity, preventing molten media penetration and structural deformation.
Superior Erosion & Wear Resistance
Rich in high-purity Al₂O₃ and mullite phase, effectively resisting corrosion from molten slag, high-temperature gas and abrasion, maintaining stable performance in harsh working environments.
Wide Temperature Adaptability
Stable performance at 1750℃ for long-term use, suitable for high-temperature zones of various industrial furnaces, with strong compatibility for oxidizing, reducing and neutral atmospheres.
Product Parameters
| Item | Fused and Re-sintered Corundum Mullite Brick | |
| Al₂O₃ % | ≥80 | ≥85 |
| SiO₂ % | ≤19 | ≤14 |
| Fe₂O₃ % | ≤0.3 | ≤0.3 |
| Bulk Density (g/cm³) | ≥2.70 | ≥2.85 |
| Apparent Porosity (%) | ≤18 | ≤18 |
| Cold Crushing Strength (MPa) | ≥100 | ≥100 |
| Refractoriness Under Load ℃ (0.2MPa, 0.6%) | ≥1700 | ≥1700 |
Detailed Application Scenarios
Our fused re-sintered corundum mullite bricks are widely used in high-temperature industrial furnaces and kilns, providing reliable and durable lining solutions for the following industries:
Metallurgical Industry
◎ Hot blast furnace regenerator, electric arc furnace side wall, ladle upper lining, and other high-temperature load-bearing parts.
Glass Industry
◎ Glass melting furnace regenerator checker brick, throat, side wall upper part, and other corrosion-prone high-temperature zones.
Chemical Industry
◎ Chemical reactor lining, sulfuric acid plant conversion furnace, phosphate fertilizer furnace, and other high-corrosion high-temperature equipment.
Building Materials Industry
◎ Ceramic roller kiln high-temperature zone, brick kiln lining, and refractory lining of cement kiln preheater.
Conclusion
Contact us now for a quote and experience the difference of working with the best in the business.
Frequently Asked Questions
What is a fused re-sintered corundum mullite brick?
A fused re-sintered corundum mullite brick is a high-grade refractory product manufactured using advanced fused re-sintering technology. This process creates a dense, uniform internal structure with high Al₂O₃ content, resulting in superior mechanical strength, excellent thermal shock resistance, and outstanding corrosion resistance compared to ordinary corundum mullite bricks.
What is the maximum service temperature of fused re-sintered corundum mullite bricks?
These bricks maintain stable performance at temperatures up to 1750℃ for long-term continuous use. Their refractoriness under load (0.2MPa, 0.6%) reaches ≥1700℃, making them suitable for the most demanding high-temperature zones in industrial furnaces and kilns.
How many thermal shock cycles can these bricks withstand?
Thanks to their low thermal expansion coefficient and dense microstructure, fused re-sintered corundum mullite bricks can withstand ≥20 rapid thermal shock cycles at 1100℃ water quenching without cracking or spalling. This makes them ideal for industrial furnaces that undergo frequent temperature fluctuations.
Which industries are fused re-sintered corundum mullite bricks suitable for?
These bricks are widely applicable across multiple industries, including metallurgy (hot blast furnaces, electric arc furnaces, ladles), glass manufacturing (melting furnace regenerators, throats, side walls), chemical processing (reactors, conversion furnaces, phosphate fertilizer furnaces), and building materials (ceramic roller kilns, brick kilns, cement kiln preheaters).
What are the key physical properties of fused re-sintered corundum mullite bricks?
The key physical properties include: Al₂O₃ content ≥80–85%, SiO₂ ≤14–19%, Fe₂O₃ ≤0.3%, bulk density ≥2.70–2.85 g/cm³, apparent porosity ≤18%, cold crushing strength ≥100MPa, and refractoriness under load ≥1700℃. These parameters ensure excellent impermeability, load-bearing capacity, and long service life.
Can fused re-sintered corundum mullite bricks be used in both oxidizing and reducing atmospheres?
Yes. One of the key advantages of fused re-sintered corundum mullite bricks is their broad atmospheric compatibility. They perform stably in oxidizing, reducing, and neutral atmospheres, making them highly versatile for various industrial furnace environments where atmospheric conditions may vary or alternate during operation.