We are a refractory material manufacturer, with four major factories: heavy brick factory, light brick factory, monolithic refractory factory and fused-cast brick factory.
We promise to provide you with high-quality refractory materials.
Brief introduction of fire clay brick
Fire clay brick is made of clay (including shale, coal gangue and other powder) as the main raw material, which is treated by mud, formed, dried and roasted. The fire clay brick 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.
Features of fire clay brick
High fire resistance
Low porosity,
High volume density
Excellent creep performance at high temperature
Details of fire clay brick
Based on the production of general clay bricks, the clay bricks produced by our company adopt good homogenizing material as the main raw material, add appropriate amount of auxiliary materials and some additives, and then change into mullite crystal phase at appropriate firing temperature after fine grinding, mixing and high pressure molding. The products have good mineral composition. Thus, the product is guaranteed to have high refractoriness, dense volume density, low porosity, excellent high temperature creep performance and good volume stability.
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 |