Rongsheng Factory High Alumina Checker Refractory Bricks Suitable For Various High-Temperature Applications
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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