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High-Quality China Fused Re-sintered Corundum Mullite Bricks from Reliable Suppliers and Factory
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:
1
Metallurgical Industry
◎ Hot blast furnace regenerator, electric arc furnace side wall, ladle upper lining, and other high-temperature load-bearing parts.
2
Glass Industry
◎ Glass melting furnace regenerator checker brick, throat, side wall upper part, and other corrosion-prone high-temperature zones.
3
Chemical Industry
◎ Chemical reactor lining, sulfuric acid plant conversion furnace, phosphate fertilizer furnace, and other high-corrosion high-temperature equipment.
4
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-performance refractory product manufactured using advanced fused re-sintering technology. This process creates a dense, uniform internal structure with high Al₂O₃ content (≥80%), delivering superior mechanical strength, thermal shock resistance, and long service life compared to conventional corundum mullite bricks.
What is the maximum service temperature of these bricks?
Fused re-sintered corundum mullite bricks can maintain stable performance at temperatures up to 1750℃ for long-term use. Their refractoriness under load (0.2MPa, 0.6%) reaches ≥1700℃, making them suitable for the most demanding high-temperature industrial applications.
How many thermal shock cycles can these bricks withstand?
These bricks demonstrate excellent thermal shock resistance, capable of withstanding 1100℃ water quenching cycles ≥20 times without cracking or spalling. Their low thermal expansion coefficient allows them to adapt reliably to the frequent rapid temperature changes common in industrial furnace operations.
Which industries are fused re-sintered corundum mullite bricks suitable for?
These bricks are widely used across multiple industries including metallurgy (hot blast furnace regenerators, electric arc furnaces), glass manufacturing (melting furnace regenerators, checker bricks), chemical processing (reactor linings, conversion furnaces), and building materials production (ceramic roller kilns, cement kiln preheaters).
What are the key physical properties of these bricks?
Key physical properties include: Al₂O₃ content ≥80–85%, bulk density ≥2.70–2.85 g/cm³, apparent porosity ≤18%, cold crushing strength ≥100MPa (room temperature compressive strength ≥130MPa), and SiO₂ ≤14–19%. These parameters ensure excellent impermeability, load-bearing capacity, and resistance to molten media penetration.
Are fused re-sintered corundum mullite bricks compatible with different furnace atmospheres?
Yes. These bricks offer strong compatibility with oxidizing, reducing, and neutral atmospheres. Their high-purity Al₂O₃ and mullite phase composition effectively resists corrosion from molten slag, high-temperature gases, and abrasion, ensuring stable long-term performance regardless of the furnace atmosphere type.