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Product description of fire clay bricks
Fire clay bricks (including shale and coal residues) are the main raw materials, which are processed, formalized, dried and roasted. Clay brick, also called agglomerated brick, is a small artificial building brick, prepared in a simple and inexpensive way.
Features of fire clay bricks
Fire clay bricks are weakly acidic at high temperatures, with slightly lower alkaline slag erosion resistance, but increased with the aloq3 content. Thermal stability is better than that of silicone, magnesium bricks, etc.
Parameters of fire clay bricks
| 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 |
Application of fire clay bricks
Clay fire resistance bricks are mainly used for blast furnaces, hot wind furnaces, ferroalloy furnaces, steel drum and cast systems and tower furnaces, heating furnaces, non-ferrous metal melting furnaces, silicate and chemical furnaces, fireplaces and combustion ducts of all thermal plants.
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