Low-creep clay bricks are made of super-grade bauxite clinker, supplemented with special additives, and are formed by high-pressure molding and high-temperature firing. They have the advantages of large heat storage capacity and low creep rate. Suitable for supporting large, medium and small blast furnaces.
| Item | Chemical composition | Apparent Porosity | Creep% (1280°C×25h ×0.2Mpa) | Reheating linear change% | Cold Crushing Strength, Mpa | Refractoriness | ||
| Al2O3 | Fe2O3 | K2O+Na2O | ||||||
| BFA | 42-53 | ≤1.6 | ≤0.7 | ≤16 | -0.4 | +0.1~-0.2 (1450°C×2h) | ≥50 | >1750 |
| BFD | 38-48 | ≤1.8 | ≤0.7 | ≤16 | -0.45 | +0.1~0.2 (1400°C×2h) | ≥48 | >1730 |
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