Product Description of Rongsheng Factory High Alumina Checker Refractory Bricks Suitable For Various High-Temperature Applications
High Alumina Checker Refractory Bricks are a type of brick used in high-temperature industrial applications. They are made from a high alumina content material, typically above 48% alumina oxide (Al2O3), which gives them excellent properties for withstanding extreme heat and harsh environments.
Physical and Chemical Properties of High Alumina Checker Refractory Bricks
1.High Temperature Resistance: Can withstand temperatures up to 1750°C (3182°F).
2.Thermal Shock Resistance: Excellent ability to withstand rapid temperature changes without cracking.
3.Mechanical Strength: High compressive strength, making them durable under heavy loads.
4.Corrosion Resistance: Resistant to slag and chemical attack, especially from alkalis and acidic environments.
Prodcut Applications of High Alumina Checker Refractory Bricks
Blast Furnaces: Used in hot blast stoves to preheat air blown into the blast furnace.
Regenerative Furnaces: Utilized in the regenerator of glass furnaces to store heat.
Steel Industry: Employed in various high-temperature zones within steelmaking processes.
Cement Kilns: Applied in areas where high thermal efficiency and durability are required.
Product Specification of High Alumina Checker Refractory Bricks
| High Alumina Checker Firebrick Physical and Chemical Index: |
| Item | Properties |
| RS-80 | RS-75 | RS-65 | RS-55 | RS-48 |
| Al2O3 (%) | 80 | ≥75 | ≥65 | ≥55 | ≥48 |
| Refractoriness (°C ) | ≥1790 | ≥1790 | ≥1790 | ≥1770 | ≥1750 |
| Bulk density (g/cm3) | 2.65 | 2.5 | 2.45 | 2.4 | 2.3 |
| Softening temperature under load (°C ) | 1530 | ≥1520 | ≥1500 | ≥1470 | ≥1420 |
| ReheatingLinear Change Rate (%) | 1500°CX2H | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| 1450°CX2H | -0.4 | -0.4 | -0.4 | -0.4 | -0.4 |
| Apparent porosity (%) | 22 | ≤23 | ≤23 | ≤22 | ≤22 |
| Cold crushing strength (Mpa) | 55 | ≥50 | ≥45 | ≥40 | ≥35 |
| Application | steel furnace, glass furnace, sodium silicate furnace, ceramic shuttle kiln, cement rotary kiln, blast furnace, electric furnace, blast furnace and reverberatory furnace. |
Manufacturing Process
Raw Material Selection: High-quality bauxite and other alumina-rich materials are chosen.
Mixing and Forming: Materials are mixed, shaped into the checker pattern, and pressed.
Drying and Firing: Formed bricks are dried and then fired at high temperatures to achieve sintering.
Quality Control: Rigorous testing for physical properties, chemical composition, and thermal behavior.
Product Advantages of Rongsheng High Alumina Checker Refractory Bricks
Energy Efficiency: The checker design enhances heat transfer, improving the efficiency of the furnaces.
Longevity: High durability and resistance to wear and tear result in a longer service life.
Reduced Maintenance Costs: Due to their robustness and resistance to degradation.
Environmentally Friendly: Can withstand harsh environments, reducing the need for frequent replacements and waste.
Comparison with Other Refractory Bricks
Versus Fireclay Bricks: Higher alumina content provides better high-temperature performance and slag resistance.
Versus Silica Bricks: More resistant to alkali attack and has better thermal shock resistance.
Versus Magnesia Bricks: Offers superior resistance to acidic slags, whereas magnesia bricks are better for basic slags.
Recent Developments
Advanced Manufacturing Techniques: Improved pressing and firing methods enhance brick consistency and performance.
Nanotechnology: Incorporation of nano-alumina particles to further improve thermal and mechanical properties.
Eco-friendly Materials: Development of bricks using sustainable raw materials and reducing environmental impact during manufacturing.
Installation and Maintenance
Installation: Requires precise alignment to ensure optimal performance. Typically installed by skilled professionals.
Maintenance: Regular inspections for cracks or damage, and timely repairs to extend service life.
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Rongsheng Factory High Alumina Checker Refractory Bricks Suitable For Various High-Temperature Applications Images
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