Product Overview
High-Alumina Universal Arch Refractory Bricks are manufactured from high-grade bauxite and produced through precise batching, high-pressure forming, and high-temperature firing. Their specialized arch-shaped design and accurate dimensional control make them particularly suitable for furnace crowns, arched roofs, kiln domes, and other curved or complex furnace structures.
Thanks to their high refractoriness, mechanical strength, and excellent resistance to chemical attack, these arch bricks perform reliably under demanding high-temperature and high-load operating conditions found in steelmaking, glass production, cement processing, and various industrial heating systems.
Product Characteristics
Excellent Refractory Performance
The product's refractoriness reaches above 1790°C, allowing it to operate stably for extended periods in high-temperature environments while maintaining structural integrity.
01
Good High-Temperature Strength
The load softening onset temperature under 0.2MPa is ≥1470°C, ensuring the product maintains good structural strength under high-temperature conditions.
02
Outstanding Thermal Shock Stability
Tests show the product withstands ≥12 thermal shock cycles (1100°C water quenching), making it suitable for applications with rapid temperature changes.
03
Superior Erosion Resistance
The product exhibits good resistance to both acidic and basic slags, effectively extending the service life of kilns.
04
Precise Dimensional Control
Advanced mold processing technology and forming techniques ensure accurate dimensions and standard arch curvature, facilitating easy installation.
05
Key Properties & Technical Specifications
| Item | Unit | Indicator | ||
| Al₂O₃ | % | ≥75 | ||
| Fe₂O₃ | % | ≤2.0 | ||
| Refractoriness | °C | ≥1790 | ||
| Load Softening Onset Temperature (0.2MPa) | °C | ≥1470 | ||
| Cold Crushing Strength | MPa | ≥60 | ||
| Apparent Porosity | % | ≤20 | ||
| Bulk Density | g/cm³ | 2.5-2.7 | ||
| Permanent Linear Change | % | 1500°C×2h ±0.3 | ||
Product Specifications
Standard Brick Series
Includes standard models such as T-1, T-3, T-5, T-6, T-8, T-9, T-11, T-15, T-16, T-17, T-19, T-20, T-22, T-23, T-25, T-26, T-27, T-28, T-29, T-30, T-31, T-32, T-33, T-35, T-36, T-37, T-38, T-39.
Custom Arch Designs
We can produce refractory bricks with various special arches and dimensions based on customer drawings and requirements. Our technical team provides professional support to help optimize design solutions.
Dimensional Tolerances
Length tolerance: ±1.5mm, width tolerance: ±1mm, thickness tolerance: ±0.5mm, ensuring construction quality.
Applications
High-Alumina Universal Arch Bricks are widely used in industries requiring durable and heat-resistant linings:
Steel & Metallurgy
Blast furnace throats
Hot blast stove crowns
Furnace roofs for reheating furnaces and electric arc furnaces
Ladle linings and metallurgical refining units
Building Materials
Cement rotary kiln crowns
Glass melting furnace crowns and regenerator chambers
Ceramic kilns
Non-Ferrous Metallurgy
Copper, aluminum, and zinc smelting furnaces
Refining furnaces and converters
Chemical and Other Industries
Cracking furnaces
Heat treatment equipment
Industrial boilers
Carbonization and waste treatment furnaces
Advantages Over Traditional Refractory Bricks
Compared with common refractory materials such as fireclay bricks or semi-silica bricks, High-Alumina Universal Arch Bricks offer several notable improvements:
Higher Refractoriness & Strength
Their refractoriness of 1750–1790 °C surpasses that of clay bricks, supporting more demanding thermal environments.
Superior Slag & Chemical Resistance
The high Al₂O₃ content and low impurity levels provide enhanced resistance to both acidic and alkaline corrosive media.
Optimized Structural Design
Arch-shaped bricks enable tighter joints, fewer gaps, and better load distribution, ideal for curved furnace roofs and domes.
Enhanced Thermal Shock Resistance
The bricks withstand repeated heating and cooling cycles, extending furnace lining service life in frequent temperature-change conditions.
These advantages make them a preferred choice in modern industrial furnace construction and maintenance.
Installation & Usage Recommendations
To maximize performance and service life, the following guidelines are recommended:
Base Preparation
Ensure the installation surface is clean, level, and aligned with the design curvature.
Masonry Practices
Use compatible refractory mortar and stagger joints during installation.
Maintain joint thickness at 1–2 mm for optimal sealing and structural stability.
Drying & Preheating
After installation, strictly follow controlled drying and heating schedules to avoid thermal shock damage.
Storage & Handling
Keep bricks dry and ventilated; avoid moisture exposure and excessive impact during transportation.
Conclusion
High-Alumina Universal Arch Refractory Bricks combine high refractoriness, excellent mechanical strength, chemical resistance, and specially engineered curved geometry to meet the rigorous demands of modern industrial furnaces. Their durability and stability significantly improve furnace performance, reduce maintenance frequency, and extend overall service life.
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