| Dose, kg/ton | Conc. Wt% | Fe2O3% | Feldspar Rec. % | ||
| Sulphonic acid | Rice Bran Oil | Kerosene | |||
| 3.00 | 0.00 | 0.0 | 80.48 | 0.262 | 59.45 |
| 3.00 | 0.25 | 0.25 | 77.95 | 0.240 | 60.02 |
| 3.00 | 0.5 | 0.5 | 70.89 | 0.166 | 77.37 |
| 3.00 | 0.75 | 0.75 | 65.54 | 0.170 | 78.57 |
| 1.50 | 0.75 | 0.75 | 72.98 | 0.120 | 83.16 |
| 3.00 | -- | 1.5 | No Froth | ||