2254 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
since both copper grade and recovery do increase. Obviously,
Cu grade in the concentrate at the rougher stage (Figure 9—
left, 6 mins of flotation) was more than 2% higher than
that registered at 15 °C. However, by minute 11 (flotation
end), the gap in Cu grade registered for the two temperature
extremities dropped by 0.35% (12.1% against 11.75%). In
addition, copper recovery in the concentrate demonstrates
a increasing pattern with temperature raise. However, it
is noteworthy that the recovery discrepancy between the
rougher and scavenger stages remains relatively constant,
Figure 7. Recovery of mixed sulfides and native copper at three different temperatures (based on chemical assay)
Figure 8. Cumulative recovery of native copper and mixed sulfides at 15 and 35 °C (based on SEM-EDS area %
multiplied by weighted concentrate sample)
since both copper grade and recovery do increase. Obviously,
Cu grade in the concentrate at the rougher stage (Figure 9—
left, 6 mins of flotation) was more than 2% higher than
that registered at 15 °C. However, by minute 11 (flotation
end), the gap in Cu grade registered for the two temperature
extremities dropped by 0.35% (12.1% against 11.75%). In
addition, copper recovery in the concentrate demonstrates
a increasing pattern with temperature raise. However, it
is noteworthy that the recovery discrepancy between the
rougher and scavenger stages remains relatively constant,
Figure 7. Recovery of mixed sulfides and native copper at three different temperatures (based on chemical assay)
Figure 8. Cumulative recovery of native copper and mixed sulfides at 15 and 35 °C (based on SEM-EDS area %
multiplied by weighted concentrate sample)