XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 2905
Equation 3, where Jg is the superficial gas velocity in cm/s,
and SWV is the superficial water velocity in cm/s.
..44J
..SWV J
43 43 340
19 51 1257 57
Cu Recovery
g
g
2
=+
+-(3)
The model can fit the experimental data well, with high
coefficients of determination (Table 3). The parameters of
the relationship have a high degree of significance, with the
P-values of the coefficients exceeding 95% confidence, as
shown in Table 4.
The regression model indicates that copper recovery is a
strong function of air and fluidisation water flow rates. The
squared Jg term in the model indicates that the relationship
between fluidisation air flow rate and copper recovery is
non-linear, with copper recovery increasing and dropping
beyond a certain Jg value.
Figure 6 compares the measured copper recoveries
and model-predicted copper recoveries for tests. There is
a high degree of confidence in the model as there is good
agreement between the measured and model predicted cop-
per recoveries. It is important to mention that this work
100 4.0
90 3.5
80
3.0
70
2.5 60
50 2.0
40 1.5
30
1.0
20
0.5 10
0 0.0
Test 6 Test 10 Test 11
Cu Recovery Enrichment Ratio
Figure 4. Copper recovery of the flotation tests performed at the center points: SWV 0.66 cm/s and J
g 0.10 cm/s
0
10
20
30
40
50
60
70
80
90
100
0 4 8 12 16 20
Time, min
Test 6
Test 10
Test 11
Figure 5. Cumulative copper recovery versus time curve for the three replicate tests
Enrichment
Ratio
Cu
Recovery,
%
Cumulative
Recovery(%)
Equation 3, where Jg is the superficial gas velocity in cm/s,
and SWV is the superficial water velocity in cm/s.
..44J
..SWV J
43 43 340
19 51 1257 57
Cu Recovery
g
g
2
=+
+-(3)
The model can fit the experimental data well, with high
coefficients of determination (Table 3). The parameters of
the relationship have a high degree of significance, with the
P-values of the coefficients exceeding 95% confidence, as
shown in Table 4.
The regression model indicates that copper recovery is a
strong function of air and fluidisation water flow rates. The
squared Jg term in the model indicates that the relationship
between fluidisation air flow rate and copper recovery is
non-linear, with copper recovery increasing and dropping
beyond a certain Jg value.
Figure 6 compares the measured copper recoveries
and model-predicted copper recoveries for tests. There is
a high degree of confidence in the model as there is good
agreement between the measured and model predicted cop-
per recoveries. It is important to mention that this work
100 4.0
90 3.5
80
3.0
70
2.5 60
50 2.0
40 1.5
30
1.0
20
0.5 10
0 0.0
Test 6 Test 10 Test 11
Cu Recovery Enrichment Ratio
Figure 4. Copper recovery of the flotation tests performed at the center points: SWV 0.66 cm/s and J
g 0.10 cm/s
0
10
20
30
40
50
60
70
80
90
100
0 4 8 12 16 20
Time, min
Test 6
Test 10
Test 11
Figure 5. Cumulative copper recovery versus time curve for the three replicate tests
Enrichment
Ratio
Cu
Recovery,
%
Cumulative
Recovery(%)