Fireclay bricks for ladles are made from selected fireclay. They have a certain degree of plasticity and can be easily molded into various shapes and sizes required for ladle construction. These bricks have a relatively lower alumina content compared to high alumina bricks but still possess good refractory properties within a specific temperature range.
Fireclay bricks are mainly applied in the upper part and sidewalls of the ladle lining where the temperature and erosion intensity are relatively moderate. They play a role in heat insulation and provide an additional protective layer to the ladle, helping to maintain the temperature of the molten steel and reducing heat loss.
- Good Thermal Shock Resistance: Can endure rapid temperature changes that occur during the filling and emptying of the ladle without significant cracking or damage, ensuring the durability of the lining. - Cost-Effective: Compared to some high-end refractory materials, fireclay bricks offer a more economical choice while still meeting the basic refractory requirements of the ladle in certain areas, contributing to cost control in steelmaking operations.
| Component | Content |
| Silica (SiO₂) | Approximately 50% - 60% |
| Alumina (Al₂O₃) | Around 20% - 30% |
| Iron Oxide (Fe₂O₃) | 3% - 8% |
| Other Minerals (such as Lime, Magnesia) | Remaining part |