2894 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
opposite trend was observed. At low frother (30 g/t), high
collector (50 g/t), and low Jg (0.4 cm/s) conditions, increase
in Vt from 4.7 m/s to 5.5 m/s did not show any significant
change in entrainment flow for the first three concentrates.
For the fourth concentrate, quartz and water recovery was
found to be higher at lower Vt (4.7 m/s).
The effect of frother concentration observed, was
also mixed depending on the other levels of other vari-
ables. At low collector concentration (20 g/t) and with
lower Vt (4.7 m/s), increase in frother concentration from
30 to 60 g/t, resulted in a decrease in entrainment flow
at both, low (0.4 cm/s) and high (0.5 cm/s) Jg values. On
the other hand, at higher Vt (5.5 m/s) and low collector
(20 g/t), an increase in the frother concentration showed a
significant increase in quartz and water recoveries for both
Jg values. The results for the effect of frother concentra-
tion at higher collector concentration (50 g/t), was more
complicated. Here, increase in frother concentration pro-
moted the entrainment flow at both levels of Vt for higher
Jg (0.5 cm/s) values, while had the opposite reducing effect
at both levels of Vt for lower Jg (0.4 cm/s) values.
Finally, increase in collector concentration from 20 to
50 g/t resulted in higher entrainment flow at low frother
concentration (30 g/t) and high Vt (5.5 m/s), for both
y =0.0373x2 +0.7148x +0.5608
R² =0.9989
0.00
10.00
20.00
30.00
40.00
50.00
60.00
0 5 10 15 20 25 30 35
Expected S (%)
Figure 4. Calibration function used for the correction of XRF results for pyrite
Figure 5. Quartz recovery against water recovery at all the process conditions (Vt =impeller tip speed, Jg =superficial gas
velocity, Frother =MIBC concentration, and Collector =PAX concentration)
Measured
S
(%)
opposite trend was observed. At low frother (30 g/t), high
collector (50 g/t), and low Jg (0.4 cm/s) conditions, increase
in Vt from 4.7 m/s to 5.5 m/s did not show any significant
change in entrainment flow for the first three concentrates.
For the fourth concentrate, quartz and water recovery was
found to be higher at lower Vt (4.7 m/s).
The effect of frother concentration observed, was
also mixed depending on the other levels of other vari-
ables. At low collector concentration (20 g/t) and with
lower Vt (4.7 m/s), increase in frother concentration from
30 to 60 g/t, resulted in a decrease in entrainment flow
at both, low (0.4 cm/s) and high (0.5 cm/s) Jg values. On
the other hand, at higher Vt (5.5 m/s) and low collector
(20 g/t), an increase in the frother concentration showed a
significant increase in quartz and water recoveries for both
Jg values. The results for the effect of frother concentra-
tion at higher collector concentration (50 g/t), was more
complicated. Here, increase in frother concentration pro-
moted the entrainment flow at both levels of Vt for higher
Jg (0.5 cm/s) values, while had the opposite reducing effect
at both levels of Vt for lower Jg (0.4 cm/s) values.
Finally, increase in collector concentration from 20 to
50 g/t resulted in higher entrainment flow at low frother
concentration (30 g/t) and high Vt (5.5 m/s), for both
y =0.0373x2 +0.7148x +0.5608
R² =0.9989
0.00
10.00
20.00
30.00
40.00
50.00
60.00
0 5 10 15 20 25 30 35
Expected S (%)
Figure 4. Calibration function used for the correction of XRF results for pyrite
Figure 5. Quartz recovery against water recovery at all the process conditions (Vt =impeller tip speed, Jg =superficial gas
velocity, Frother =MIBC concentration, and Collector =PAX concentration)
Measured
S
(%)