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Empirical description of the grinding actions at different percentages of Cs. Numbers from 1 to 3 indicate the ascending degree of action (adapted from Gupta and Yan 2016 [30]).
| % Cs | Sliding | Cascading | Centrifuging |
|---|---|---|---|
| 10% | 3 | - | - |
| 20% | 3 | - | - |
| 30% | 3 | 1 | - |
| 40% | 2 | 1 | - |
| 50% | 2 | 1 | 1 |
| 60% | 2 | 2 | 1 |
| 70% | 1 | 3 | 3 |
| 80% | 1 | 3 | 2 |
| 90% | – | 2 | 3 |
