XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 2457
Figure 5. SEM element maps (× 400 magnification) (a), (b), (c) &(d) of the +CS2 size fraction
(–53 +20 µm) of the composite millerite concentrate from flotation at +650 mV vs SHE and pH 9
using 100 g/t KeX
Table 3. Metallurgical balance across the products during flotation of the neat nickel sulfide sample at
+650 mV vs SHE and pH 9 with 100 g/t KeX
Product Wt%
Ni,
wt%
Fe,
wt%
S,
wt%
Pentlandite dist.,
%
Millerite dist.,
%
Concentrate #1, 0.5 min 26.8 62.8 1.21 33.0 2.93 55.8
Concentrate #2, 1 min 5.94 58.4 2.49 31.4 1.33 10.9
Concentrate #3, 2 min 4.29 56.9 3.33 31.1 1.29 7.43
Concentrate #4, 4 min 2.82 48.1 4.52 27.4 1.15 3.81
Concentrate #5, 8 min 3.57 45.5 6.30 26.8 2.03 4.08
Tailings 56.6 44.1 17.9 38.7 91.3 18.0
Feed, Calc. 100.0 50.7 11.1 35.7 100.0 100.0
Head assay 100.0 55.2 11.2 30.3 --
Figure 5. SEM element maps (× 400 magnification) (a), (b), (c) &(d) of the +CS2 size fraction
(–53 +20 µm) of the composite millerite concentrate from flotation at +650 mV vs SHE and pH 9
using 100 g/t KeX
Table 3. Metallurgical balance across the products during flotation of the neat nickel sulfide sample at
+650 mV vs SHE and pH 9 with 100 g/t KeX
Product Wt%
Ni,
wt%
Fe,
wt%
S,
wt%
Pentlandite dist.,
%
Millerite dist.,
%
Concentrate #1, 0.5 min 26.8 62.8 1.21 33.0 2.93 55.8
Concentrate #2, 1 min 5.94 58.4 2.49 31.4 1.33 10.9
Concentrate #3, 2 min 4.29 56.9 3.33 31.1 1.29 7.43
Concentrate #4, 4 min 2.82 48.1 4.52 27.4 1.15 3.81
Concentrate #5, 8 min 3.57 45.5 6.30 26.8 2.03 4.08
Tailings 56.6 44.1 17.9 38.7 91.3 18.0
Feed, Calc. 100.0 50.7 11.1 35.7 100.0 100.0
Head assay 100.0 55.2 11.2 30.3 --