Performance indices and wash water flow rates | Conditions or actions |
Wash water to the rougher spirals: 320 m3/h Rougher concentrate: 57.2% Fe Wash water to the cleaner spirals: 650 m3/h Wash water to the re-cleaner spirals: 650 m3/h Final Concentrate: 66.1% Fe Weight recovery to final concentrate: 34.4% | Nominal conditions
|
Wash water to the rougher spirals: 270 m3/h Rougher concentrate: 56.8% Fe Wash water to the cleaner spirals: 650 m3/h Wash water to the re-cleaner spirals: 650 m3/h Final Concentrate: 65.8% Fe Weight recovery to final concentrate: 35.6% | Reduction of the wash water to the rougher: Objective: Reduce losses of coarse iron oxide particles in the roughers |
Wash water to the rougher spirals: 270 m3/h Rougher concentrate: 56.8% Fe Wash water to the cleaner spirals: 670 m3/h Wash water to the re-cleaner spirals: 670 m3/h Final Concentrate: 66.1% Fe Weight recovery to final concentrate: 35.1% | Increase of the wash water to the cleaner and re-cleaners: Objective: Improve cleaning action of the cleaners and re-cleaner spirals. |