XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 2337
mineral component of the each concentrate is calculated
based on the assay results, as shown in Table 4. The data
indicate that milled with cast iron balls introduced much
more gangue and pyrrhotite minerals to the Conc. 1 and
Conc. 2 for JC ore. And the gangue minerals mass per unit
sulphide minerals for cast iron balls is much higher than
stainless steel balls. On the contrary, NK ore milled with
stainless steel balls introduced more gangue component to
the concentrates, while the gangue minerals mass per unit
sulphide minerals for cast iron balls is much lower than
stainless steel balls.
Copper and Nickel Grade and Recovery for Different
Milling Products
The Cu/Ni recovery as the function of time of different
milled products for the two ores are shown in Figure 2.
The results show that the final Cu and Ni recovery
for JC ore milled with stainless steel balls is slightly higher
than that milled with cast iron balls. Especially, the nickel
Table 4. Calculated mineral component of the concentrates based on assay results
Tests Products
Solid
Mass
Thereinto, Sum for
Sulphide
Minerals
Gangue/
Sulphide
Minerals Cy Pn Po Gangue
JC
Cast Iron
Conc. 1 50.40 8.58 7.11 11.58 23.12 27.28 0.85
Conc. 2 20.30 1.74 2.06 4.87 11.62 8.68 1.34
Conc. 3 20.50 1.21 1.78 5.06 12.46 8.04 1.55
Conc. 4 10.00 0.50 0.74 2.35 6.41 3.59 1.79
Cum.Conc. 101.20 12.03 11.69 23.87 53.61 47.59 1.13
JC
Stainless
Steel
Conc. 1 26.10 7.50 3.95 4.61 10.04 16.06 0.62
Conc. 2 22.10 2.72 4.01 5.47 9.90 12.20 0.81
Conc. 3 18.70 1.27 2.45 5.19 9.80 8.90 1.10
Conc. 4 16.00 0.74 1.57 4.67 9.02 6.98 1.29
Cum.Conc. 82.90 12.22 11.98 19.94 38.76 44.14 0.88
NK
Cast Iron
Conc. 1 15.98 1.26 0.71 2.27 11.74 4.24 2.77
Conc. 2 9.55 0.39 0.66 0.83 7.67 1.88 4.08
Conc. 3 5.89 0.11 0.99 0.29 4.49 1.40 3.22
Conc. 4 3.38 0.05 0.75 0.18 2.40 0.98 2.44
Cum.Conc. 34.79 1.81 3.12 3.57 26.30 8.50 3.10
NK
Stainless
Steel
Conc. 1 11.83 1.15 0.24 0.41 10.02 1.81 5.54
Conc. 2 8.30 0.36 0.26 0.55 7.13 1.17 6.11
Conc. 3 5.18 0.16 0.29 0.81 3.92 1.26 3.12
Conc. 4 3.76 0.12 0.47 0.29 2.88 0.88 3.27
Cum.Conc. 29.07 1.79 1.26 2.06 23.95 5.12 4.68
Cy: Chalcopyrite, Pn: Pentlandite, Po: Pyrrhotite
(a) (b)
0 2 4 6 8 10 12
0
20
40
60
80
Cu Stainless Steel
Cu Cast Iron
Ni Stainless Steel
Ni Cast Iron
0 2 4 6 8 10 12
0
20
40
60
80
Cu Stainless Steel
Cu Cast Iron
Ni Stainless Steel
Ni Cast Iron
Figure 2. Cu/Ni Recovery as the function of time of different milled products A-JC ore B-NK ore
mineral component of the each concentrate is calculated
based on the assay results, as shown in Table 4. The data
indicate that milled with cast iron balls introduced much
more gangue and pyrrhotite minerals to the Conc. 1 and
Conc. 2 for JC ore. And the gangue minerals mass per unit
sulphide minerals for cast iron balls is much higher than
stainless steel balls. On the contrary, NK ore milled with
stainless steel balls introduced more gangue component to
the concentrates, while the gangue minerals mass per unit
sulphide minerals for cast iron balls is much lower than
stainless steel balls.
Copper and Nickel Grade and Recovery for Different
Milling Products
The Cu/Ni recovery as the function of time of different
milled products for the two ores are shown in Figure 2.
The results show that the final Cu and Ni recovery
for JC ore milled with stainless steel balls is slightly higher
than that milled with cast iron balls. Especially, the nickel
Table 4. Calculated mineral component of the concentrates based on assay results
Tests Products
Solid
Mass
Thereinto, Sum for
Sulphide
Minerals
Gangue/
Sulphide
Minerals Cy Pn Po Gangue
JC
Cast Iron
Conc. 1 50.40 8.58 7.11 11.58 23.12 27.28 0.85
Conc. 2 20.30 1.74 2.06 4.87 11.62 8.68 1.34
Conc. 3 20.50 1.21 1.78 5.06 12.46 8.04 1.55
Conc. 4 10.00 0.50 0.74 2.35 6.41 3.59 1.79
Cum.Conc. 101.20 12.03 11.69 23.87 53.61 47.59 1.13
JC
Stainless
Steel
Conc. 1 26.10 7.50 3.95 4.61 10.04 16.06 0.62
Conc. 2 22.10 2.72 4.01 5.47 9.90 12.20 0.81
Conc. 3 18.70 1.27 2.45 5.19 9.80 8.90 1.10
Conc. 4 16.00 0.74 1.57 4.67 9.02 6.98 1.29
Cum.Conc. 82.90 12.22 11.98 19.94 38.76 44.14 0.88
NK
Cast Iron
Conc. 1 15.98 1.26 0.71 2.27 11.74 4.24 2.77
Conc. 2 9.55 0.39 0.66 0.83 7.67 1.88 4.08
Conc. 3 5.89 0.11 0.99 0.29 4.49 1.40 3.22
Conc. 4 3.38 0.05 0.75 0.18 2.40 0.98 2.44
Cum.Conc. 34.79 1.81 3.12 3.57 26.30 8.50 3.10
NK
Stainless
Steel
Conc. 1 11.83 1.15 0.24 0.41 10.02 1.81 5.54
Conc. 2 8.30 0.36 0.26 0.55 7.13 1.17 6.11
Conc. 3 5.18 0.16 0.29 0.81 3.92 1.26 3.12
Conc. 4 3.76 0.12 0.47 0.29 2.88 0.88 3.27
Cum.Conc. 29.07 1.79 1.26 2.06 23.95 5.12 4.68
Cy: Chalcopyrite, Pn: Pentlandite, Po: Pyrrhotite
(a) (b)
0 2 4 6 8 10 12
0
20
40
60
80
Cu Stainless Steel
Cu Cast Iron
Ni Stainless Steel
Ni Cast Iron
0 2 4 6 8 10 12
0
20
40
60
80
Cu Stainless Steel
Cu Cast Iron
Ni Stainless Steel
Ni Cast Iron
Figure 2. Cu/Ni Recovery as the function of time of different milled products A-JC ore B-NK ore