XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 2705
the froth is intentionally kept to a minimum for the effi-
cient recovery of coarse particles.
The experiment was conducted with equal propor-
tions of fine and coarse particles, maintaining a distance of
approximately 150 mm from the pulp to the cell lip. This
was done to prevent the pulp from overflowing and ensure
that the froth would have sufficient space to expand and
overflow on its own. In other words, the intention is for
the recovery to occur from the secondary froth phase. The
results show a gradual increase in recovery over time, with a
recovery of about 79%. This indicates the recovery of both
coarse and fine particles.
Furthermore, size distribution analyses were conducted
to determine the recovery of coarse particles specifically
+250 µm in the concentrates. In Figure 5, the percentage
of +250 µm particles reported in the concentrates for all
three experiments is depicted. The recovery of +250 µm
particles in each concentrate closely aligns with the percent-
age present in the feed. This observation suggests no par-
tial selectivity in the transportation of coarse particles by
bubble clusters. The concentrate resulting from the blend
of coarse and fine particles, –300 µm, also shows a similar
recovery of +250 µm particles in all the concentrates, indi-
cating that fine particles contribute to froth stabilization,
facilitating the recovery of coarse particles. Similar obser-
vations have been made by several researchers previously,
for example, Rahman et al. (2012) and Vieira and Peres
Figure 4. Flotation test results
Figure 5. Percentage of +250 particle reported in the concentrates
the froth is intentionally kept to a minimum for the effi-
cient recovery of coarse particles.
The experiment was conducted with equal propor-
tions of fine and coarse particles, maintaining a distance of
approximately 150 mm from the pulp to the cell lip. This
was done to prevent the pulp from overflowing and ensure
that the froth would have sufficient space to expand and
overflow on its own. In other words, the intention is for
the recovery to occur from the secondary froth phase. The
results show a gradual increase in recovery over time, with a
recovery of about 79%. This indicates the recovery of both
coarse and fine particles.
Furthermore, size distribution analyses were conducted
to determine the recovery of coarse particles specifically
+250 µm in the concentrates. In Figure 5, the percentage
of +250 µm particles reported in the concentrates for all
three experiments is depicted. The recovery of +250 µm
particles in each concentrate closely aligns with the percent-
age present in the feed. This observation suggests no par-
tial selectivity in the transportation of coarse particles by
bubble clusters. The concentrate resulting from the blend
of coarse and fine particles, –300 µm, also shows a similar
recovery of +250 µm particles in all the concentrates, indi-
cating that fine particles contribute to froth stabilization,
facilitating the recovery of coarse particles. Similar obser-
vations have been made by several researchers previously,
for example, Rahman et al. (2012) and Vieira and Peres
Figure 4. Flotation test results
Figure 5. Percentage of +250 particle reported in the concentrates