2466 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
PGE sulpharsenides, PGE alloys and semi-metallics. In
terms of PGM species, the dominant species are PtBiTe for
the PGE telluride minerals, PtAs for the PGE arsenide min-
erals and PtS for the PGE sulphide minerals, by mass %,
respectively. PGE tellurides are the dominant PGM species
in terms of mass %compared to the other PGE minerals
present. The high abundance of PGE tellurides is character-
istic of Platreef ores where the Pt and Pd tellurides contrib-
ute between 20% and 45% of the total PGM assemblage
(Schouwstra and Kinloch, 2000 Shackleton, 2007). The
PGE sulpharsenides and PGE alloys and semi-metallics are
present in low mass percentages based on the total number
of grains intersected. PtFe is the dominant PGE alloy, in
mass %,whereas PdSb is the dominant semi-metallic.
Figures 7B and C show the PGM minerals upgrade
ratio for the primary and secondary grind rougher flota-
tion concentrates, respectively. The data shows that the
primary grind rougher flotation concentrates preferentially
upgrade the PGE sulphides (cooperite/braggite and laurite)
for all collectors evaluated (Figure 7B). This is followed
by the PGE tellurides and PGE arsenides for the standard
Figure 2. (A) 6E PGM grade-recovery curves and (B) 6E PGM recovery-concentrate mass pull curves evaluating AECI Mining
Chemicals reagents compared to the standard reagent regime used. The dotted line shows the primary grind rougher flotation
and the solid line shows the secondary grind rougher flotation
Figure 3. (A) Cu grade-recovery curves and (B) Cu recovery-concentrate mass pull curves evaluating AECI Mining Chemicals
reagents compared to the standard reagent regime used. The dotted line represents the primary grind rougher flotation and the
solid line the secondary grind rougher flotation
PGE sulpharsenides, PGE alloys and semi-metallics. In
terms of PGM species, the dominant species are PtBiTe for
the PGE telluride minerals, PtAs for the PGE arsenide min-
erals and PtS for the PGE sulphide minerals, by mass %,
respectively. PGE tellurides are the dominant PGM species
in terms of mass %compared to the other PGE minerals
present. The high abundance of PGE tellurides is character-
istic of Platreef ores where the Pt and Pd tellurides contrib-
ute between 20% and 45% of the total PGM assemblage
(Schouwstra and Kinloch, 2000 Shackleton, 2007). The
PGE sulpharsenides and PGE alloys and semi-metallics are
present in low mass percentages based on the total number
of grains intersected. PtFe is the dominant PGE alloy, in
mass %,whereas PdSb is the dominant semi-metallic.
Figures 7B and C show the PGM minerals upgrade
ratio for the primary and secondary grind rougher flota-
tion concentrates, respectively. The data shows that the
primary grind rougher flotation concentrates preferentially
upgrade the PGE sulphides (cooperite/braggite and laurite)
for all collectors evaluated (Figure 7B). This is followed
by the PGE tellurides and PGE arsenides for the standard
Figure 2. (A) 6E PGM grade-recovery curves and (B) 6E PGM recovery-concentrate mass pull curves evaluating AECI Mining
Chemicals reagents compared to the standard reagent regime used. The dotted line shows the primary grind rougher flotation
and the solid line shows the secondary grind rougher flotation
Figure 3. (A) Cu grade-recovery curves and (B) Cu recovery-concentrate mass pull curves evaluating AECI Mining Chemicals
reagents compared to the standard reagent regime used. The dotted line represents the primary grind rougher flotation and the
solid line the secondary grind rougher flotation