3060 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
ERVOs, BSs and PAX collectors. It is evident that, ERVOs
and BSs reached higher chalcopyrite recovery in a shorter
flotation time and a lower pyrite recovery compared to the
obtained with the conventional collector PAX. The above
allows to affirm that the proposed alternative reagents
seem to present a better selectivity between chalcopyrite
and pyrite, when compared to the conventional reagent.
According to the above, the most appropriate flotation time
for the green collectors (ERVOs and BSs) is 8 minutes to
reach the higher selectivity during the flotation.
BATCH FLOTATION TESTS RESULTS,
USING MIXTURES OF ERVOS AND BSS
Figure 4a and 4b show the recovery and grade obtained
of elements (copper and iron) and minerals (chalcopyrite
and pyrite) using different mixtures of ERVOs/BSs, respec-
tively. From these results it is observed that the highest
copper recovery was obtained using the 80/20 proportion
of EVROs/BSs, which corresponded to 88.5% of copper
recovery and a grade of 3.5%. In addition, a chalcopyrite
recovery of 95.2% and a grade of 10.2% were obtained.
However, it is important to note that the recovery and
grade of pyrite obtained when this mixture was used was
63.1% and 17.2%, respectively. It is established that the
increase in iron grades in this mixture is mainly associated
with the increase in the recovery of chalcopyrite obtained
at this condition.
Table 3 shows a comparison of the metallurgical per-
formance obtained with the different mixtures studied. It
can be observed that, the mixtures ERVOs/BSs improved
Figure 3. Comparison of elemental recovery (a) mineral recovery (b) obtained as a function of time, at pH 8 and using 100 g/t
ERVOs, BSs and PAX collectors by separate and 15 g/t of MIBC as frother
Figure 4. Elemental (a) and mineral (b) recovery obtained to use different ERVOs/BSs mixtures and 15 g/t of MIBC as frother
ERVOs, BSs and PAX collectors. It is evident that, ERVOs
and BSs reached higher chalcopyrite recovery in a shorter
flotation time and a lower pyrite recovery compared to the
obtained with the conventional collector PAX. The above
allows to affirm that the proposed alternative reagents
seem to present a better selectivity between chalcopyrite
and pyrite, when compared to the conventional reagent.
According to the above, the most appropriate flotation time
for the green collectors (ERVOs and BSs) is 8 minutes to
reach the higher selectivity during the flotation.
BATCH FLOTATION TESTS RESULTS,
USING MIXTURES OF ERVOS AND BSS
Figure 4a and 4b show the recovery and grade obtained
of elements (copper and iron) and minerals (chalcopyrite
and pyrite) using different mixtures of ERVOs/BSs, respec-
tively. From these results it is observed that the highest
copper recovery was obtained using the 80/20 proportion
of EVROs/BSs, which corresponded to 88.5% of copper
recovery and a grade of 3.5%. In addition, a chalcopyrite
recovery of 95.2% and a grade of 10.2% were obtained.
However, it is important to note that the recovery and
grade of pyrite obtained when this mixture was used was
63.1% and 17.2%, respectively. It is established that the
increase in iron grades in this mixture is mainly associated
with the increase in the recovery of chalcopyrite obtained
at this condition.
Table 3 shows a comparison of the metallurgical per-
formance obtained with the different mixtures studied. It
can be observed that, the mixtures ERVOs/BSs improved
Figure 3. Comparison of elemental recovery (a) mineral recovery (b) obtained as a function of time, at pH 8 and using 100 g/t
ERVOs, BSs and PAX collectors by separate and 15 g/t of MIBC as frother
Figure 4. Elemental (a) and mineral (b) recovery obtained to use different ERVOs/BSs mixtures and 15 g/t of MIBC as frother