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High-Quality Fused Re-sintered Corundum Mullite Bricks from China Suppliers and Factory - Thermal Shock & Erosion Resistant
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
Q
What is fused re-sintered corundum mullite brick, and how does it differ from ordinary corundum mullite brick?
Fused re-sintered corundum mullite brick is produced using advanced fusion and re-sintering technology, which creates a denser and more uniform internal structure compared to ordinary corundum mullite bricks. This process significantly enhances stability, durability, and resistance to thermal shock, resulting in a considerably longer service life under high-temperature industrial conditions.
Q
What is the maximum operating temperature for fused re-sintered corundum mullite bricks?
These bricks can maintain stable performance at temperatures up to 1750℃ for long-term use. They are compatible with oxidizing, reducing, and neutral atmospheres, making them suitable for a wide range of high-temperature industrial furnace applications.
Q
How many thermal shock cycles can fused re-sintered corundum mullite bricks withstand?
Thanks to their low thermal expansion coefficient, these bricks can withstand a minimum of 20 rapid thermal shock cycles at 1100℃ water quenching without cracking or spalling. This makes them ideal for industrial furnaces that frequently undergo rapid temperature changes.
Q
What are the key physical and chemical properties of your corundum mullite bricks?
Our bricks are available in two grades: Al₂O₃ content ≥80% or ≥85%, with SiO₂ ≤19% or ≤14% respectively. Key physical properties include bulk density ≥2.70–2.85 g/cm³, apparent porosity ≤18%, cold crushing strength ≥100 MPa, and refractoriness under load ≥1700℃ (0.2MPa, 0.6%). Room temperature compressive strength can reach ≥130MPa.
Q
In which industries and applications are fused re-sintered corundum mullite bricks commonly used?
These bricks are widely used across multiple industries: in metallurgy for hot blast furnace regenerators and electric arc furnace side walls; in the glass industry for melting furnace regenerator checker bricks and side walls; in the chemical industry for reactor linings and conversion furnaces; and in building materials for ceramic roller kilns and cement kiln preheaters.
Q
Can fused re-sintered corundum mullite bricks resist chemical corrosion from molten slag and gases?
Yes. The high-purity Al₂O₃ and mullite phase composition provides excellent resistance to corrosion from molten slag, high-temperature gases, and mechanical abrasion. The low apparent porosity (≤18%) also prevents molten media from penetrating the brick structure, ensuring long-term performance stability even in chemically aggressive environments.