| pH | Impeller speed, rpm | Product | % Wt. | % L.O.I. |
| 8 | 900 | Conc. | 25.61 | 5.77 |
| Tail | 74.39 | 9.04 | ||
| Total | 100 | 8.20 | ||
| 1200 | Conc. | 32.26 | 6.00 | |
| Tail | 67.74 | 9.25 | ||
| Total | 100 | 8.20 | ||
| 12 | 900 | Conc. | 25.96 | 5.93 |
| Tail | 74.04 | 9.00 | ||
| Total | 100 | 8.20 | ||
| 1200 | Conc. | 31.12 | 5.99 | |
| Tail | 68.88 | 9.20 | ||
| Conc. | 100 | 8.20 |