| Slag layer thickness (m) | Draining time (s), Equation (2) | Draining time (s) for centered position, CFD simulations | Draining time (s) for off-centered position, CFD simulations |
| 0.10 | 1498.6 | 1470.0 | 1480.0 |
| 0.15 | 1542.1 | 1520.0 | 1526.0 |
| 0.20 | 1584.3 | 1570.0 | 1570.0 |