3124 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
speed. The flotation rate constant of 2-OA was 0.21 min–1
higher than that of PAX at 0.15 min–1. The novel collector
2-OA reacted rapidly during the flotation process, there-
fore significantly improving the flotation efficiency, thus
explaining the better flotation effect of collector 2-OA
than PAX.
Two-Stage Flotation
The continuous two-stage flotation is intended to better
enrich valuable metals in minerals and to ensure efficient
recovery of the target minerals. Figure 10 demonstrates the
flotation effect of collector 2-OA and PAX during two-stage
flotation. The initial particle size for feeding was below 75
μm and the pulp density of 10% was kept during the whole
process. The roughing was at pH 9, a collector dosage of
100 g/t, and cleaning at pH 10, a collector dosage of 0 g/t,
according to the conditioning tests of one-stage flotation.
The recovery of copper using 2-OA in the roughing stage
was 75%, while the copper grade in the concentrate (mid-
dling) was 13%. On the other hand, using PAX yielded a
copper recovery of 71% and a copper grade of 10% in the
concentrate (middling). The concentrates from the rough-
ing stage were directly fed to the cleaning stage. The pH
was increased to 10 without the addition of collectors. The
final copper recovery of collector 2-OA was 69% and a cop-
per grade of 26%. When comparing the performance of
PAX with collector 2-OA, a lower copper recovery of 61%
and a copper grade of 24% were obtained. By employing
a continuous two-stage flotation of copper sulfide ore, the
copper grade is twice as high as the one-stage flotation,
from 13% to 26%.
CONCLUSION
In this study, the flotation effect of the novel collector
2-OA compared with the conventional collector PAX was
investigated under various flotation conditions in a copper
sulfide ore flotation. In the one-stage flotation, the highest
copper recovery reached around 78% for collector 2-OA
at the best flotation condition of pH 10, pulp density of
10%, particle size below 75 μm and a collector dosage of
Figure 10. Effect of continuous two-stage flotation of copper sulfide ore
speed. The flotation rate constant of 2-OA was 0.21 min–1
higher than that of PAX at 0.15 min–1. The novel collector
2-OA reacted rapidly during the flotation process, there-
fore significantly improving the flotation efficiency, thus
explaining the better flotation effect of collector 2-OA
than PAX.
Two-Stage Flotation
The continuous two-stage flotation is intended to better
enrich valuable metals in minerals and to ensure efficient
recovery of the target minerals. Figure 10 demonstrates the
flotation effect of collector 2-OA and PAX during two-stage
flotation. The initial particle size for feeding was below 75
μm and the pulp density of 10% was kept during the whole
process. The roughing was at pH 9, a collector dosage of
100 g/t, and cleaning at pH 10, a collector dosage of 0 g/t,
according to the conditioning tests of one-stage flotation.
The recovery of copper using 2-OA in the roughing stage
was 75%, while the copper grade in the concentrate (mid-
dling) was 13%. On the other hand, using PAX yielded a
copper recovery of 71% and a copper grade of 10% in the
concentrate (middling). The concentrates from the rough-
ing stage were directly fed to the cleaning stage. The pH
was increased to 10 without the addition of collectors. The
final copper recovery of collector 2-OA was 69% and a cop-
per grade of 26%. When comparing the performance of
PAX with collector 2-OA, a lower copper recovery of 61%
and a copper grade of 24% were obtained. By employing
a continuous two-stage flotation of copper sulfide ore, the
copper grade is twice as high as the one-stage flotation,
from 13% to 26%.
CONCLUSION
In this study, the flotation effect of the novel collector
2-OA compared with the conventional collector PAX was
investigated under various flotation conditions in a copper
sulfide ore flotation. In the one-stage flotation, the highest
copper recovery reached around 78% for collector 2-OA
at the best flotation condition of pH 10, pulp density of
10%, particle size below 75 μm and a collector dosage of
Figure 10. Effect of continuous two-stage flotation of copper sulfide ore