Refractory bricks are materials specifically designed for use in high-temperature applications, such as furnace linings, kilns, and boilers. They are made from a mixture of refractory materials, such as fireclay, alumina, magnesia, and other mineral oxides, that are capable of withstanding high temperatures without undergoing significant thermal degradation.
Refractory bricks are known for their high refractoriness, which refers to their ability to resist melting and other thermal degradation at high temperatures. They also have high resistance to thermal shock, which allows them to withstand sudden temperature changes without cracking or breaking.
In addition to their high-temperature resistance, refractory bricks also have excellent resistance to chemical attack and corrosion, making them ideal for use in harsh industrial environments. They are available in a range of shapes, sizes, and configurations to meet specific application requirements, and can be customized to provide a perfect fit for various furnace and kiln designs.
Refractory bricks are essential components in high-temperature processing and manufacturing, providing crucial support and protection to equipment and processes. They are typically used in applications such as furnaces, kilns, boilers, and other high-temperature equipment, and are selected based on specific performance requirements, including refractoriness, thermal shock resistance, and resistance to chemical attack.
Overall, refractory bricks are a critical component in a wide range of high-temperature applications, providing reliable performance and long-lasting protection in harsh industrial environments.
Item/Grade | Fire Clay Brick | |||
SK-30 | SK-32 | SK-34 | SK-35 | |
Al 2 O 3 % (≥) | 30 | 35 | 38 | 45 |
Fe 2 O 3 % (≥) | 2.5 | 2.5 | 2 | 2 |
Refractoriness(SK) | 30 | 32 | 34 | 35 |
Refractoriness under load,
0.2MPa, ºC (≥) |
1250 | 1300 | 1360 | 1420 |
Apparent porosity (%) | 22-26 | 20-24 | 20-22 | 18-20 |
Bulk density(g/cm 3 )) | 1.9-2.0 | 1.95-2.1 | 2.1-2.2 | 2.15-2.22 |
Cold crushing strength, MPa (≥) | 20 | 25 | 30 | 40 |
Item/Grade | High Alumina Brick | |||
SK-36 | SK-37 | SK-38 | SK-40 | |
Al 2 O 3 % (≥) | 55 | 65 | 70 | 75 |
Fe 2 O 3 % (≥) | 2 | 2 | 2 | 2 |
Refractoriness ( SK ) | 20-23 | 20-23 | 20-22 | 18-20 |
Refractoriness under load,
0.2MPa, ºC (≥) |
1250 | 1300 | 1360 | 1420 |
Operating temperature ( ºC ) | 1400 | 1430 | 1480 | 1500 |
Bulk density ( g/cm 3 ) | 2.23 | 2.35 | 2.46 | 2.58 |
Cold crushing strength, MPa ( ≥ ) | 45 | 50 | 60 | 70 |
Unit weight (KG) | 3.8 | 4.0 | 4.2 | 4.4 |