1. High Refractoriness
2. Strong Thermal Shock Resistance
3. Excellent Corrosion Resistance
4. High Mechanical Strength
5. Energy-Efficient and Environmentally Friendly
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Refractory bricks are materials designed to withstand high temperatures, chemical corrosion, and thermal shock. They are widely used in high-temperature industries such as metallurgy, chemical engineering, construction, and ceramics. Made from raw materials like bauxite, silica, and magnesite, refractory bricks offer excellent compressive strength, heat resistance, and thermal stability. They effectively insulate heat, improve energy efficiency, and extend the service life of equipment. Depending on the application, there are various types of refractory bricks, including high alumina, silica, and magnesite bricks, which are essential for furnaces, boilers, and other high-temperature devices.
Refractory Brick Technical Specifications
| Property | Unit | High Alumina Brick | Silica Brick | Clay Brick | Magnesite Brick | Chrome Brick |
|---|---|---|---|---|---|---|
| Al₂O₃ | % | 48-90 | 0-10 | 30-40 | 0-10 | 5-25 |
| SiO₂ | % | 2-30 | 90-98 | 50-70 | 0-5 | 0-30 |
| Fe₂O₃ | % | ≤ 2 | ≤ 1 | ≤ 2 | ≤ 2 | ≤ 5 |
| CaO | % | ≤ 5 | ≤ 2 | ≤ 5 | ≥ 90 | 20-30 |
| MgO | % | ≤ 5 | ≤ 1 | ≤ 2 | ≥ 90 | 0-15 |
| Cr₂O₃ | % | 0-5 | 0-2 | 0-2 | 0-5 | 45-55 |
| Compressive Strength | MPa | 50-120 | 30-90 | 30-70 | 100-250 | 80-180 |
| Bulk Density | g/cm³ | 2.3-2.75 | 2.3-2.5 | 2.2-2.4 | 2.9-3.0 | 2.8-3.0 |
| Refractoriness | °C | 1700-1800 | 1580-1700 | 1300-1400 | 2800-3000 | 1700-1900 |
| Refractoriness Under Load | °C | 1600-1700 | 1500-1600 | 1300-1400 | 2800-3000 | 1600-1800 |
| Thermal Expansion Coefficient | ×10⁻⁶/°C | 5-8 | 6-9 | 6-7 | 4-6 | 5-7 |
| Thermal Conductivity | W/m·K | 1.0-2.5 | 1.3-2.0 | 1.2-1.8 | 3.5-5.5 | 2.0-3.5 |
| Thermal Shock Resistance | cycles/°C | 5-15 | 8-15 | 10-20 | 5-12 | 8-12 |
| Service Temperature Range | °C | 1600-1800 | 1400-1600 | 1300-1400 | 1800-3000 | 1600-1800 |
1. Metallurgical Industry
Used in blast furnaces, steelmaking furnaces, and other high-temperature equipment to withstand molten metals and slag.
2. Cement Production
Applied in rotary kilns, clinker coolers, and other equipment involved in cement manufacturing.
3. Glass Industry
Used in glass melting furnaces and tanks to withstand extreme heat and corrosive environments.
4. Petrochemical Industry
Used in reactors, catalytic crackers, and other high-temperature processes to resist chemical corrosion.
5. Power Generation
Employed in boilers, incinerators, and furnace linings to handle high temperatures and thermal shock.
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