Description
Refractory mortar is made from high-quality grog, flint clay, high-purity silicon carbide and electrically calcined anthracite as main raw materials, with the addition of various special micro-powders and composite binder.
Features
- Excellent fluidity, enabling it to flow into narrow gaps.
- Initial setting time exceeds 20 hours to ensure complete penetration.
- Short hardening time with high strength; hardened product remains elastic without becoming brittle or cracking, and no voids are formed.
- Superior bonding affinity, firmly adhering to the iron shell and furnace lining to form an integrated structure.
- Slight thermal expansion when heated, filling the gap between the blast furnace shell and cooling stave, effectively preventing gas leakage through cracks.
Parameter
| Item | SPYR-1 | SPYR-2 | SPYR-3 | |
|---|---|---|---|---|
| Material | SiC based | Alumina based | C based | |
| Chemical composition, % | Al2O3 | ≥55 | ||
| SiC | C+SiC≥75 | |||
| Bulk density, g/cm3 | 200℃×24h | ≥2.0 | ≥1.8 | ≤1.0 |
| Modulus of rupture | 200℃×24h | ≥4.0 | ≥2.0 | ≥1.3 |
| 1200℃×0.5h | ≥0.5 | ≥2.0 | ||
| Crushing strength, MPa | 200℃×24h | ≥10 | ||
| Permanent linear change, % | 1200℃×3h, +1.0 | 200℃, ±0.5 | ||
