| Preassemble Brick For Hot Blast Stove Of Blast Furnace |
| Item | SK-36 | SK-37 | SK-38 | SK-40 |
| Refractoriness, ºC | 1790 | 1820 | 1850 | 1920 |
| Chemical composition | Al2O3, % | 55 | 65 | 70 | 82 |
| Fe2O3, % | 2.0 | 2.0 | 2.0 | 2.0 |
| Refractoriness under loading | 0.2Mpa, ºC(≥) | 1450 | 1480 | 1530 | 1600 |
| True porosity, % | 20-23 | 20-23 | 20-22 | 18-20 |
| Bulk density, g/cm3 | 2.25-2.4 | 2.3-2.5 | 2.4-2.6 | 2.5-2.7 |
| Cold crushing strength, MPa | 45 | 50 | 60 | 70 |
Preassemble Brick For Hot Blast Stove Of Blast Furnace are produced with selected bauxite chamotte by advanced process and strict quality control. The main mineral components are corundum and mullite phases. Its features are excellent high temperature mechanics and chemical corrosion resistance.
If Al2O3 content is higher than 90%, it is called corundum brick. Due to different resources, national standards are not completely consistent. For example, European countries have stipulated that the lower limit of Al2O3 content for high-alumina refractories is 42%. In China, according to the content of Al2O3 in Preassemble Brick For Hot Blast Stove Of Blast Furnace, it is usually divided into three grades: Grade I──Al2O3 content>75%; Grade II──Al2O3 content is 60～75%; Grade III──Al2O3 content is 48～60%.
Preassemble Brick For Hot Blast Stove Of Blast Furnace has high refractoriness, good acid and alkali erosion resistance, high temperature strength, thermal shock stability is good wait for an advantage, widely used in metallurgy, petroleum, chemical industry, building materials, thermal technology equipment mechanical processing, military industry and other industries
Feature
1. Preassemble Brick For Hot Blast Stove Of Blast Furnace have better thermal conductivity than clay bricks.
2. Because Al2O3 in high aluminum products is high and has less miscellaneous mass, softening temperature under load is higher than clay bricks.
3. The thermal shock resistance of high alumina bricks is between clay and silica products.
Applications:
Preassemble Brick For Hot Blast Stove Of Blast Furnace mainly used for the insulating lining of hot surfaces or backing heat-insulating layers of other refractory materials. The refractory linings or heat-insulating materials of the industries, such as, ethylene pyrolysis furnaces, ubular furnaces, reforming furnaces of synthetic ammonia, gas generators and high-temperature shullte kilns, etc.
