XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 1951
13000 gauss, the iron grade decreased from 47.19% to
43.89% Fe while there was a significant rise in the yield
from 34.6% to 62.0%, as shown in Figure 15. A similar
trend can be observed for –45 and –75 micron feed sizes in
Figure 16–17.
The overall effect of physical beneficiation on iron and
carbon recovery concerning feed size is presented in Table 5.
The highest carbon recovery could be achieved with a –25
micron feed size due to the effective liberation of particles.
A consolidated chemical composition table consisting
of all the products generated with optimized conditions
with respect to a feed size of –25 microns is presented in
Table 6.
34.6
50.0
57.0
59.7
62.0
47.19
45.64 44.81 44.40 43.89
6.58 6.72
7.12
7.30
7.76
5.80
6.00
6.20
6.40
6.60
6.80
7.00
7.20
7.40
7.60
7.80
8.00
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
2500 5500 7500 11500 13000
Magnetic Field Intensity, Gauss
WHIMS Mag Yield, %Fe(T), %FC, %
Figure 15. Effect of magnetic intensity on magnetic concentrate for –25 micron feed
35.04
46.96
53.50
57.47
60.04
46.02
44.80
44.12 43.41 42.87
5.03
6.37
7.14
7.84
8.28
0
1
2
3
4
5
6
7
8
9
30.00
35.00
40.00
45.00
50.00
55.00
60.00
65.00
70.00
75.00
80.00
2500 5500 7500 11500 13000
Magnetic Field Intensity, Gauss
WHIMS Mag Yield, %Fe(T), %FC, %
Figure 16. Effect of magnetic intensity on magnetic concentrate for –45 micron feed
13000 gauss, the iron grade decreased from 47.19% to
43.89% Fe while there was a significant rise in the yield
from 34.6% to 62.0%, as shown in Figure 15. A similar
trend can be observed for –45 and –75 micron feed sizes in
Figure 16–17.
The overall effect of physical beneficiation on iron and
carbon recovery concerning feed size is presented in Table 5.
The highest carbon recovery could be achieved with a –25
micron feed size due to the effective liberation of particles.
A consolidated chemical composition table consisting
of all the products generated with optimized conditions
with respect to a feed size of –25 microns is presented in
Table 6.
34.6
50.0
57.0
59.7
62.0
47.19
45.64 44.81 44.40 43.89
6.58 6.72
7.12
7.30
7.76
5.80
6.00
6.20
6.40
6.60
6.80
7.00
7.20
7.40
7.60
7.80
8.00
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
2500 5500 7500 11500 13000
Magnetic Field Intensity, Gauss
WHIMS Mag Yield, %Fe(T), %FC, %
Figure 15. Effect of magnetic intensity on magnetic concentrate for –25 micron feed
35.04
46.96
53.50
57.47
60.04
46.02
44.80
44.12 43.41 42.87
5.03
6.37
7.14
7.84
8.28
0
1
2
3
4
5
6
7
8
9
30.00
35.00
40.00
45.00
50.00
55.00
60.00
65.00
70.00
75.00
80.00
2500 5500 7500 11500 13000
Magnetic Field Intensity, Gauss
WHIMS Mag Yield, %Fe(T), %FC, %
Figure 16. Effect of magnetic intensity on magnetic concentrate for –45 micron feed