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Test No.: Sep-F1 Project No.: 50149-001 Operator: Date: Dec 7 2011
Purpose:
Procedure: To conduct Cu/Ni separation test based on F12
Feed: As outlined below.
Grind: 2 kg of minus 10 mesh of Master Composite Target Primary grind: K 80 = 90 µm.
Regrind:
57 minutes / 2 kg @ 65% solids in laboratory Ball Mill
Conditions:
Reagents added, g/t
Time, minutes
Stage Lime SIPX MIBC* CMC DF250 PAX 3501 Grind Cond. Froth pH Eh
Grind 5 57
Condition 1
Rougher 1 10 1 2 8.9 38.9
Rougher 2 5 5 1 2 8.8 41.0
Rougher 3 10 5 1 4 8.8 11.4
Rougher 4 20 5 1 4 8.7 -3.5
Rougher 5 30 1 8 8.7 -35.2
Cleaner
Regrind
1st cleaner 5 75 1 8 8.6 43.6
1st cleaner scavanger 10 1 4 8.5 12.6
Combine 1st Clnr conc. & 1st Clnr scave conc.
2nd cleaner 5 75 1 6 8.6 74.1
3rd cleaner 5 50 1 4 8.5 60.0
Separation
Regrind 100 5
Cu Rougher 2380 5 1 2 11.5 -97.0
Cu Cleaner 1 3745 1 1.5 12.0 -89.2
Total 6225 90 35 200 0 0 62 12 45.5
Stage
Roughers 1stClnr and Scav. 2nd, 3rd Cleaner & Sep.
Flotation Cell
1000g-D12 500-g D12 250-g D12
Speed: rpm
Metallurgical Balance
1800 1600
1100
Malvern on Cu/Ni separation circuit
Assay for: Cu, Ni, Pt, Pd, Au, S, Fe, MgO
Product
Weight
Assays, (Pt, Pd, Au g/t), (Cu, Ni, S, Fe, MgO %)
% Distribution
g % Cu Ni Pt Pd Au S Fe MgO Cu Ni Pt Pd Au S Fe MgO
Cu Cleaner 1 Conc. 3.8 0.2 31.3 0.38 1.50 6.04 0.83 31.4 30.4 0.70 19.1 0.2 0.8 2.4 3.8 2.6 0.5 0.01
Cu Cleaner 1 Tails 17.2 0.9 14.9 2.01 2.38 9.83 0.71 20.5 19.3 1.90 41.1 4.2 5.4 17.7 14.6 7.8 1.4 0.07
Cu Rghr Tails(Ni Conc.) 40.1 2.0 2.51 9.75 4.52 9.47 0.33 22.3 31.9 5.70 16.2 47.4 24.0 39.7 15.9 19.8 5.3 0.49
Bulk 3rd Clnr Tail 39.7 2.0 0.87 2.42 2.61 2.54 0.20 11.6 24.0 16.7 5.5 11.7 13.7 10.5 9.5 10.2 4.0 1.41
Bulk 2nd Clnr Tail 129 6.5 0.24 0.62 0.97 0.72 0.09 5.56 15.5 23.0 5.0 9.7 16.6 9.7 13.9 15.9 8.3 6.30
Bulk 1st Clnr Scav.Tail 157 7.9 0.05 0.18 0.36 0.19 0.02 2.24 12.3 23.7 1.2 3.4 7.5 3.1 3.8 7.8 8.0 7.91
Bulk Rougher Tail 1610 80.6 0.05 0.12 0.15 0.10 < 0.02 1.01 10.8 24.5 11.9 23.4 32.0 16.8 38.6 36.0 72.5 83.8
Ni(S)= 0.06
Head (calc.) 1997 100 0.31 0.41 0.38 0.48 0.04 2.26 12.0 23.6 100 100 100 100 100 100 100 100
(direct) 0.33 0.42 0.41 0.45 0.04 2.53 11.9 22.8
Combined Products
Product Weight
Assays, (Pt, Pd, Au g/t), (Cu, Ni, S, fe, MgO %)
% Distribution
% Cu Ni Pt Pd Au S Fe MgO Cu Ni Pt Pd Au S Fe MgO
Cu Cleaner 1 Conc. 0.2 31.3 0.38 1.50 6.04 0.83 31.4 30.4 0.70 19.1 0.2 0.8 2.4 3.8 2.6 0.5 0.0
Cu Rghr Conc. 1.1 17.9 1.72 2.22 9.14 0.73 22.5 21.3 1.68 60.2 4.4 6.2 20.1 18.4 10.4 1.9 0.1
Ni Conc. 2.0 2.51 9.75 4.52 9.47 0.33 22.3 31.9 5.70 16.2 47.4 24.0 39.7 15.9 19.8 5.3 0.5
Bulk 3rd Clnr Conc 3.1 7.79 6.99 3.73 9.36 0.47 22.4 28.3 4.32 76.4 51.8 30.2 59.8 34.3 30.2 7.2 0.6
Bulk 2nd Clnr Conc 5.0 5.06 5.19 3.29 6.67 0.36 18.1 26.6 9.20 81.9 63.4 43.9 70.3 43.8 40.4 11.2 2.0
Bulk 1st Clnr + Clnr Scav Conc 11.5 2.36 2.63 1.99 3.33 0.21 11.1 20.4 16.9 86.9 73.1 60.5 80.0 57.7 56.3 19.5 8.3
Bulk Rghr Conc 19.4 1.42 1.63 1.33 2.06 0.13 7.49 17.1 19.7 88.1 76.6 68.0 83.2 61.4 64.0 27.5 16.2
Bulk Rghr Tail 80.6 0.05 0.12 0.15 0.10 0.02 1.01 10.8 24.5 11.9 23.4 32.0 16.8 38.6 36.0 72.5 83.8