XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 2865
trend, further confirming the estimated range of the CCC
values.
DISCUSSION
After initial bubble formation, its size is primarily a func-
tion of the coalescence process. Coalescence, in turn, is
influenced by the chemical and hydrodynamical properties
of the system. This study focuses on understanding coales-
cence through changes in bubble size. Bubble size changes
are assessed as a function of the relationship between pro-
cess chemistry and hydrodynamics using frother concentra-
tion and airflow.
The results show clear evidence of the impact of frother
concentration on the size of the bubbles. This observation
350
400
450
500
550
600
650
0 100 200 300 400 500
MIBC concentration, ppm
0.02 cm/s
0.13 cm/s
0.17 cm/s
Figure 5. Comparison of Sauter mean diameter for three airflows with varied frother concentrations
0
5
10
15
20
25
0 100 200 300 400 500
MIBC dosage, ppm
Jg =0.02
Jg =0.13
Jg =0.17
Figure 6. Bubble surface area flux as a function of the frother dosage at three different gas flows at a
fluidised bed hydrodynamic environment
D32μm
,
Sb,
1/s
trend, further confirming the estimated range of the CCC
values.
DISCUSSION
After initial bubble formation, its size is primarily a func-
tion of the coalescence process. Coalescence, in turn, is
influenced by the chemical and hydrodynamical properties
of the system. This study focuses on understanding coales-
cence through changes in bubble size. Bubble size changes
are assessed as a function of the relationship between pro-
cess chemistry and hydrodynamics using frother concentra-
tion and airflow.
The results show clear evidence of the impact of frother
concentration on the size of the bubbles. This observation
350
400
450
500
550
600
650
0 100 200 300 400 500
MIBC concentration, ppm
0.02 cm/s
0.13 cm/s
0.17 cm/s
Figure 5. Comparison of Sauter mean diameter for three airflows with varied frother concentrations
0
5
10
15
20
25
0 100 200 300 400 500
MIBC dosage, ppm
Jg =0.02
Jg =0.13
Jg =0.17
Figure 6. Bubble surface area flux as a function of the frother dosage at three different gas flows at a
fluidised bed hydrodynamic environment
D32μm
,
Sb,
1/s