2366 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
evidence showing the attachment of the fine particles to the
coarse carrier particles (Figure 2(ii) and (iii)). Hornn et al.
2020 reported that surface hydrophobicity by the collec-
tor addition affects agglomeration by the carrier particle.
Therefore, the results at the conditions of increasing the
carrier particle might be attributed to a lack of the surface
hydrophobicity.
All these results suggest that among three factors (col-
lector dosage, pulp density, and carrier addition), collector
dosage was very important on agglomeration, and the addi-
tion of high dosage of collector was the most effective way
to increase the apparent particle size by the agglomeration.
BATCH FLOTATION TESTS
Effects of collector dosage, pulp density, and carrier addition
on the batch flotation for fine particles were investigated.
Figure 3(i), (ii), and (iii) show the copper recoveries as a
function of time. The results shown in Figure 3(ii) and (iii)
indicates that the effects of pulp density and carrier addition
on the flotation recovery were not significant. On the other
hand, as shown in Figure 3(i), there was a strong effects
of collector dosage on the flotation: recovery increased sig-
nificantly with increasing collector dosage. Figure 4 shows
the results of the maximum recovery Rmax and the flotation
rate constant k at different collector dosage obtained by fit-
ting of the experimental results. The values of these kinetic
parameters increased with increasing collector dosages.
These results were matched well with the results of
agglomeration tests shown in the last section, where a sig-
nificant increase in the agglomerate size was observed with
high dosage of collector, while the effects of pulp density and
carrier addition on the agglomeration were limited. With
Figure 1. The agglomerated (bar) and dispersed (dotted line) particle size at the conditions of collector dosage (i) and pulp
density (ii)
Figure 2. The agglomerated (solid line) and dispersed (dotted line) volumetric frequency at different rate of carrier addition
evidence showing the attachment of the fine particles to the
coarse carrier particles (Figure 2(ii) and (iii)). Hornn et al.
2020 reported that surface hydrophobicity by the collec-
tor addition affects agglomeration by the carrier particle.
Therefore, the results at the conditions of increasing the
carrier particle might be attributed to a lack of the surface
hydrophobicity.
All these results suggest that among three factors (col-
lector dosage, pulp density, and carrier addition), collector
dosage was very important on agglomeration, and the addi-
tion of high dosage of collector was the most effective way
to increase the apparent particle size by the agglomeration.
BATCH FLOTATION TESTS
Effects of collector dosage, pulp density, and carrier addition
on the batch flotation for fine particles were investigated.
Figure 3(i), (ii), and (iii) show the copper recoveries as a
function of time. The results shown in Figure 3(ii) and (iii)
indicates that the effects of pulp density and carrier addition
on the flotation recovery were not significant. On the other
hand, as shown in Figure 3(i), there was a strong effects
of collector dosage on the flotation: recovery increased sig-
nificantly with increasing collector dosage. Figure 4 shows
the results of the maximum recovery Rmax and the flotation
rate constant k at different collector dosage obtained by fit-
ting of the experimental results. The values of these kinetic
parameters increased with increasing collector dosages.
These results were matched well with the results of
agglomeration tests shown in the last section, where a sig-
nificant increase in the agglomerate size was observed with
high dosage of collector, while the effects of pulp density and
carrier addition on the agglomeration were limited. With
Figure 1. The agglomerated (bar) and dispersed (dotted line) particle size at the conditions of collector dosage (i) and pulp
density (ii)
Figure 2. The agglomerated (solid line) and dispersed (dotted line) volumetric frequency at different rate of carrier addition