Low creep clay bricks used in hot blast heater is mainly made of high quality calcined fireclay as the raw material, it is produced by high-pressure forming and high sintering. It has the characteristics of high refractoriness under load, good creep property to resist to medium temperature, good impact resistance, it is the principle refractory material used in the low temperature of hot blast heater.
Low Creep Clay Bricks for Hot Blast Stove Properties
1.High refractoriness under load.
2.High-temperature endurable.
3.Good corrosion resistance.
4.Good spalling resistance and wear resistance.
5.Good thermal shock resistance.
6.High mechanical strength.
Applications For Fire Clay Brick
The low creep clay brick can be applied to hot blast stove, metallurgy, building materials, chemical industry, petroleum, machinery manufacturing, silicate, power and other industries.
Physical and Chemical Indicators for Fire Clay Brick
| Fire clay brick SK-32 | |
| Item | Standard |
| AI2O3(%) | 30 |
| Fe2O3 (%) | 3 |
| Refractoriness (SK) | 32 |
| Refractoriness under load, 0.2MPa, Ta, ((°C) | 1300 |
| Porosity (%) | 22-26 |
| Bulk density (g/cm³) | 2.05 |
| Cold crushing strength (MPa) | 25 |
| Thermal expansion at 1000°C (%) | 0.6 |
| Fire clay brick SK-34 | |
| Item | Standard |
| AI2O3(%) | 38 |
| Fe2O3 (%) | 2.5 |
| Refractoriness (SK) | 34 |
Refractoriness under load, 0.2MPa, Ta, ((°C) | 1350 |
| Porosity (% | 19-23 |
| Bulk density (g/cm³) | 2.10-2.15 |
| Cold crushing strength (MPa) | 25 |
| Thermal expansion at 1000°C (%) | 0.6 |
| Fire clay brick SK-36 | |
| Item | Standard |
| AI2O3(%) | 50 |
| Fe2O3 (%) | 2 |
| Refractoriness (SK) | 36 |
| Refractoriness under load, 0.2MPa, Ta, ((°C) | 1450 |
| Porosity (% | 20-24 |
| Bulk density (g/cm³) | 2.30-2.40 |
| Cold crushing strength (MPa) | 45 |
| Thermal expansion at 1000°C (%) | 0.3 |
