Description
Product
High-alumina, low-cement / ultra-low-cement monolithic castable refractory
Typical Chemical Composition (Whytheat-A / Castable 90S)
- Al₂O₃ : 88–92%
- SiO₂ : 5–8%
- Fe₂O₃ : ≤ 1.0%
- CaO : 1.5–2.5% (low-cement binder)
Physical Properties (after firing at 1500–1550 °C)
| Property | Value |
| Maximum Service Temperature | 1850 °C |
| Bulk Density | 2.90–3.10 g/cm³ |
| Cold Crushing Strength | 80–110 MPa |
| Permanent Linear Change | ± 0.3% at 1500 °C |
| Thermal Shock Resistance | Excellent (15+ cycles) |
| Installation Method | Casting, vibro-casting, pumping, gunning |
Main Applications in Bangladeshi Steel Mills
- Permanent & working lining of steel ladles (20–150 ton)
- Tundish permanent lining & backup lining
- EAF delta section & roof hot repairs
- Ladle bottom, well block area, impact zone
- BOF tap-hole sleeve & surrounding area
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