Refractory bricks
High-Quality Refractory Bricks for Industrial Applications
Refractory bricks are essential components in high-temperature industrial processes, offering superior thermal resistance and durability. Our premium refractory bricks are engineered to withstand extreme conditions while maintaining structural integrity.
Product Specifications
Key Parameters:
- Material Composition: High-purity alumina, silica, and fire clay
- Maximum Service Temperature: 1600-1800°C (2912-3272°F)
- Thermal Conductivity: 1.0-1.5 W/mK
- Cold Crushing Strength: 25-50 MPa
- Apparent Porosity: 15-25%
- Standard Sizes: 230×114×65 mm, 230×114×75 mm (custom sizes available)
Physical Properties Comparison:
| Property | Standard Grade | High-Alumina Grade | Insulating Grade |
|---|---|---|---|
| Al2O3 Content (%) | 35-45 | 50-80 | 30-40 |
| Bulk Density (g/cm³) | 2.1-2.3 | 2.5-2.8 | 1.0-1.2 |
| Thermal Shock Resistance | Good | Excellent | Fair |
Refractory Bricks FAQ
Q: What are the main applications of refractory bricks?
A: Refractory bricks are primarily used in high-temperature industrial applications including furnaces, kilns, incinerators, boilers, and reactors across steel, cement, glass, and petrochemical industries. They serve as protective linings that contain heat and protect structural components.
Q: How do I choose the right refractory bricks for my application?
A: Selecting refractory bricks requires considering several factors: operating temperature, chemical environment, thermal cycling frequency, mechanical stress, and installation method. Standard fireclay bricks work for moderate temperatures (up to 1500°C), while high-alumina or silica bricks are better for extreme conditions. Consult with our technical team for specific recommendations.
Technical Advantages
- Superior thermal stability with low thermal expansion
- Excellent resistance to slag and chemical corrosion
- High mechanical strength at elevated temperatures
- Consistent quality with precise dimensional tolerances
- Long service life reducing maintenance costs
Performance Data
| Grade | Permanent Linear Change (%) | Thermal Conductivity at 1000°C (W/mK) | Acid Resistance |
|---|---|---|---|
| Fireclay | 0.3-0.5 | 1.2 | Good |
| High Alumina | 0.1-0.3 | 1.8 | Excellent |
| Silica | 0.5-0.8 | 1.5 | Fair |
Q: How should refractory bricks be installed for optimal performance?
A: Proper installation of refractory bricks is crucial. They should be laid with appropriate mortar joints (typically 1-3mm), following expansion joint guidelines (3-6mm per meter). The substrate must be clean and level. Cure new installations gradually, following a controlled heating schedule to avoid thermal shock and ensure proper bonding.
Specialty Refractory Products
Beyond standard refractory bricks, we offer specialized solutions:
- Insulating refractory bricks with lower thermal conductivity
- Acid-resistant formulations for chemical processing
- Magnesia-carbon bricks for steel ladle applications
- Custom-shaped bricks for unique furnace geometries
- Pre-cast refractory shapes for complex installations