1 Introduction
2 Triboelectrostatic Separation
3 Triboelectrostatic Charging Unit
3.1 Sampling Unit
3.2 Charge Measurement
4 Sample Description
Density | |
---|---|
Sample | [g/cm3] |
Quartz | 2.65 |
Chalcopyrite | 4.15 |
Feed sample | 2.75 |
5 Experimentation
5.1 Charge Measurement of the Pure Minerals in the Triboelectrostatic Charging Unit
5.2 Triboelectrostatic Belt Separation
5.2.1 Influence of Machine Parameters
5.2.2 Results of the Triboelectrostatic Belt Separation
Belt speed | Gap between the electrodes | Applied voltage | Polarity of the top electrode | Feed rate |
---|---|---|---|---|
[fps] | [mm] | [kV] | (+/−) | (1–10) |
35.2 | 14 | 6 | (+) | 10 |
Mass | Density | Calculated chalcopyrite grade | Chalcopyrite recovery | |
---|---|---|---|---|
[%] | [g/cm3] | [%] | [%] | |
Chalcopyrite-concentrate | 10.3 | 30.3 | 79.0 | 81.2 |
Quartz-tailings | 89.7 | 20.7 | 2.1 | 18.8 |
Feed | 100.0 | 20.8 | 10.0 | 100.0 |