Sintered Corundum Refractory Brick
LAR’s sintered corundum refractory brick is a high-purity refractory material used in high-temperature industrial environments. Manufacturers produce sintered corundum brick by pressing and high-temperature sintering. This process forms a stable crystalline structure based on alumina.
LAR’s sintered corundum refractory brick belongs to the advanced category of corundum brick products. The material contains a high percentage of Al₂O₃. This composition provides good resistance to heat and mechanical stress.
Manufacturers design the internal structure to achieve a density adjustment of about 5–6%. This density control improves thermal efficiency and reduces unnecessary mass. The structure also helps maintain stability during long-term use.
LAR’s sintered corundum brick offers reliable performance in many industrial furnaces. The material provides a balanced combination of strength, stability, and cost efficiency.
Product Overview
Sintered corundum refractory brick is a high-performance refractory material manufactured from high-purity alumina raw materials through advanced sintering processes. It features excellent refractoriness, high mechanical strength, and strong resistance to chemical corrosion, making it suitable for demanding high-temperature industrial applications.
Sintered corundum brick provides outstanding resistance to slag erosion, molten metal penetration, and thermal deformation. Its dense microstructure helps maintain stable performance under continuous high-temperature operation, while its excellent wear resistance makes it suitable for areas exposed to severe mechanical stress and material abrasion.
Sintered corundum refractory brick is widely used in steelmaking furnaces, non-ferrous metal processing equipment, glass furnaces, ceramic kilns, and other high-temperature systems. It is especially suitable for furnace zones requiring high purity, low contamination, and long-term structural stability.
LAR manufactures customized sintered corundum bricks according to different furnace designs, operating temperatures, and application requirements. The products are produced with carefully selected raw materials and strict quality control to ensure consistent performance, long service life, and reliable thermal protection in harsh industrial environments.
Key Features
High Purity and Stability
Sintered corundum refractory brick contains high alumina content. The material maintains stable performance at elevated temperatures. The structure resists phase changes during operation.
Good High Temperature Resistance
Sintered corundum brick performs well under high-temperature conditions. The material maintains shape and volume stability. The product supports continuous furnace operation.
Reliable Thermal Shock Resistance
The material adapts to temperature fluctuations. The structure reduces the risk of cracking. The product performs well during heating and cooling cycles.
Strong Mechanical Strength
Each corundum brick provides solid load-bearing capacity. The sintered structure supports heavy-duty applications. The product resists deformation under pressure.
Cost-Effective Performance
Sintered corundum refractory brick offers a balance between performance and cost. The material serves as an efficient solution for many standard applications. Users benefit from stable service life and reasonable cost.
Typical Product Types
Manufacturers supply several types of sintered corundum brick:
· Standard sintered corundum refractory brick
· High-purity sintered corundum brick
· Low-porosity corundum brick
· Customized shapes and sizes
Each type meets specific furnace requirements. Suppliers adjust composition and forming methods based on application needs.
Technical Characteristics
Item | Unit | Standard Corundum Brick | High Purity Corundum Brick | Dense Corundum Brick |
Al₂O₃ Content | % | ≥90 | ≥95 | ≥98 |
Bulk Density | g/cm³ | 3.10–3.20 | 3.20–3.35 | 3.30–3.45 |
Apparent Porosity | % | ≤18 | ≤16 | ≤14 |
Cold Crushing Strength | MPa | ≥70 | ≥90 | ≥110 |
Refractoriness Under Load | °C | ≥1700 | ≥1750 | ≥1800 |
Thermal Shock Resistance | — | Good | Excellent | Excellent |
Thermal Conductivity | W/m·K | 2.5–3.5 | 3.0–4.0 | 3.5–4.5 |
Max Service Temperature | °C | 1700 | 1750 | 1800 |
Linear Change (1500°C×2h) | % | ±0.5 | ±0.4 | ±0.3 |
Technical parameters may vary depending on grade and use conditions. Manufacturers provide detailed specifications when required.
Applications
Sintered corundum refractory brick is widely used in different industries:
· Metallurgical Industry – furnace linings and high-temperature zones
· Ceramic Industry – kiln linings and firing systems
· Glass Industry – auxiliary furnace structures
· Petrochemical Industry – reactors and thermal units
Sintered corundum brick performs reliably in environments with moderate chemical exposure. The material supports stable industrial operation.
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Advantages Compared To Others
Type | Advantages | Application |
Sintered Corundum Refractory Brick | Stable performance, cost-effective, good strength | General high-temperature use |
Electrocast Corundum Brick | Higher density, stronger corrosion resistance | Severe working conditions |
Sintered corundum refractory brick provides dependable performance in standard conditions. The material offers a practical solution for many furnace designs.
Customization & Manufacturing
A professional manufacturer supplies customized sintered corundum brick solutions. The producer adjusts the product based on:
· Furnace design and temperature
· Load and mechanical requirements
· Shape and dimensional needs
· Performance targets
The sintering process ensures consistent quality and controlled microstructure. The product meets the requirements of modern industrial applications.
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