Coke ovens operate at temperatures of around 1250-1300°C, with the refractory lining going through repeated thermal cycles of approximately 42-48 hours. The lining has to maintain its strength and stability through these repeated cycles while also dealing with thermal expansion, impact and abrasion.
The key requirements include:
Different areas of a coke oven have different operating requirements. The refractory selection is therefore made according to the application.
| Application | Area | Refractory Used |
|---|---|---|
| Flue | Wall | Super Duty Fire Clay Bricks |
| Sole | HA – Andalusite Bricks | |
| Roof | Super Duty Fire Clay Bricks | |
| Oven | Wall | Super Duty Fire Clay Bricks |
| Sole | HA – Andalusite Bricks | |
| Roof | Super Duty Fire Clay Bricks | |
| Door | — | Castable / Precast Bricks |
| Chimney & Ducts | — | Fire Clay Bricks |