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Brief introduction of fire clay brick for steel industry
Fire clay brick from china is made of clay, which is treated with clay, formed, dried and roasted. Fire clay brick, also known as sintered brick, is a man-made small block used in construction, easy to process, low price.
Advantages of fire clay brick
Fire clay brick from china is weakly acidic at high temperature, and its resistance to alkaline slag erosion is slightly poor, but it increases with the increase of Al2O3 content. The thermal stability is better than that of silicon brick and magnesium brick.
Application of fire clay brick
Fire clay bricks are mainly used in blast furnace, hot blast furnace, cupola, steel barrels and pouring steel system and soaking furnace, heating furnace, non-ferrous metal melting furnace, kiln for silicate industry and chemical industry and all the chimney and flue of thermal equipment.
Parameters of fire clay brick
| Item/Grade | SK-30 | SK-32 | SK-34 | SK-35 |
| Al2O3% (≥) | 30 | 35 | 38 | 45 |
| Fe2O3% (≤) | 2.5 | 2.5 | 2 | 2 |
| Refractoriness(SK) | 30 | 32 | 34 | 35 |
| Refractoriness underload, 0.2MPa, °C (≥) | 1250 | 1300 | 1360 | 1420 |
| Apparent porosity (%) | 22-26 | 20-24 | 20-22 | 18-20 |
| Bulk density (g/cm³) | 1.9-2.0 | 1.95-2.1 | 2.1-2.2 | 2.15-2.22 |
| Cold crushing strength ,MPa (≥) | 40 | 45 | 30 | 40 |