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Test No.: F19 Project No.: 50149-001 Operator: YW Date: December 8 2011
Purpose: Cleaner flotation test, coarse grind
Procedure: As outlined below.
Feed: 2 kg of minus 10 mesh of Master Composite
Grind: 40 minutes / 2 kg @ 65% solids in laboratory Ball Mill
Regrind:
Target K 80: 150 µm
Conditions: Regind K80: 23 µm
Reagents added, g/t Time, minutes
Stage Lime SIPX MIBC* CMC DF250 PAX 3477 Grind Cond. Froth pH Eh
Grind
Condition
5 40
Rougher 1 10 1 2 8.8 19.6
Rougher 2 5 5 1 2 8.8 50.4
Rougher 3 10 5 1 4 8.8 31.8
Rougher 4 20 5 1 6 8.7 54.7
Regrind (PM) 16
1st Cleaner 5 75 1 8 8.7 74.6
1st Cleaner Scav 10 1 4 8.4 96.5
2nd Cleaner 5 75 1 6 8.5 80.7
3rd Cleaner 5 50 1 4 8.3 99.1
Total 0 55 35 200 0 56 8
* As required
36 . .
Stage
Roughers 1stClnr and Scav. 2nd, 3rd Cleaner
Flotation Cell 1000g-D12
500-g D12 250-g D12
Speed: rpm
Metallurgical Balance
1800 1600
1100
Assay for: Cu, Ni,S, Pt, Pd, Au, Fe, MgO
Ni(S) for Roghr tail
Malvern on regrind
Product
Weight
g % Cu
Assays, (Pt, Pd, Au g/t), (Cu, Ni, Fe, MgO %)
Ni S Pt Pd Au Fe MgO Cu Ni
% Distribution
S Pt Pd Au Fe MgO
3rd Clnr Conc 20.6 1.0 23.6 3.51 31.6 3.26 15.0 1.51 30.7 2.52 68.5 8.0 10.4 7.6 31.9 34.7 2.5 0.1
3rd Clnr Tls 18.3 0.9 2.31 8.72 15.3 4.02 8.55 0.47 23.6 12.4 6.0 17.6 4.5 8.3 16.2 9.6 1.7 0.5
2nd Clnr Tls 74.2 3.7 0.39 3.44 7.94 1.81 1.81 0.11 16.2 20.3 4.1 28.2 9.4 15 13.9 9.1 4.8 3.3
1st Clnr Scv Conc 23.9 1.2 0.20 2.57 10.4 2.08 1.05 0.07 20.8 18.3 0.7 6.8 4.0 5.6 2.6 1.9 2.0 1.0
1st Clnr Scv Tls 169.3 8.6 0.06 0.63 6.85 0.75 0.35 0.04 18.7 19.8 1.5 11.8 18.6 14.3 6.1 7.5 12.8 7.3
Rougher Tails 1672 84.5 0.08 0.15 1.98 0.26 0.17 0.02 11.3 24.1 19.3 27.7 53.1 49.0 29.4 37.3 76.1 87.8
Ni(S)= 0.10
Head (calc.) 1979 100 0.36 0.46 3.15 0.45 0.49 0.05 12.5 23.2 100 100 100 100 100 100 100 100
(direct) 0.33 0.42 2.53 0.41 0.45 0.04 11.9 22.8
Combined Products
Product
Weight
g % Cu Ni
Assays, (Pt, Pd, Au g/t), (Cu, Ni %)
S Pt Pd Au Fe MgO Cu Ni
% Distribution
S Pt Pd Au Fe MgO
3rd Clnr Conc 20.6 1.04 23.6 3.51 31.6 3.26 15.0 1.51 30.7 2.52 68.5 8.0 10.4 7.6 31.9 34.7 2.5 0.1
2nd Clnr Conc 38.9 1.97 13.6 5.96 23.9 3.62 12.0 1.02 27.4 7.17 74.4 25.6 14.9 15.9 48.1 44.2 4.3 0.6
1st Clnr Conc 113.1 5.72 4.93 4.31 13.4 2.43 5.30 0.42 20.0 15.78 78.5 53.8 24.4 31.0 61.9 53.3 9.1 3.9
1st Cl & ClScv Conc 137.0 6.92 4.10 4.00 12.9 2.37 4.56 0.36 20.2 16.22 79.2 60.5 28.3 36.6 64.5 55.2 11.1 4.8
Rghr Conc 306.3 15.5 1.87 2.14 9.56 1.47 2.23 0.18 19.4 18.20 80.7 72.3 46.9 51.0 70.6 62.7 23.9 12.2
Cleaner Circuit Mass rec Upgrade
Unit Recovery
Unit Performance 7% 12.62 1.64 3.31 2.21 6.72 8.21 1.59 0.14 87% 27% 62% 43% 54% 67% 64% 61%
Product Weight
Assays, % % Distribution
g % Cp Pn Po Gangue Cp Pn Po Gangue
3rd Cleaner Conc 20.6 1.0 68.4 9.9 11.6 10.1 68.5 8.3 1.9 0.1
3rd Cleaner Tail 18.3 0.9 6.70 24.8 12.6 55.9 6.0 18.5 1.9 0.6
2nd Cleaner Tail 74.2 3.7 1.13 9.70 11.4 77.7 4.1 29.4 6.8 3.2
1st Cleaner Scav Conc23.9 1.2 0.58 7.11 20.7 71.7 0.7 6.9 4.0 0.9
1st Cleaner Scav Tail 169.3 8.6 0.19 1.61 16.5 81.7 1.5 11.2 22.5 7.6
Rougher Tail 1672 84.5 0.24 0.38 4.67 94.7 19.3 25.6 62.9 87.5
Head (calc.) 1978.7 100 1.04 1.24 6.3 91.5 100 100 100 100
Combined Products Cu+Ni PGE
3rd Cleaner Conc 1.0 68.4 9.9 11.6 10.1 68.5 8.3 1.9 0.1 27.1 19.8
2nd Cleaner Conc 2.0 39.4 16.9 12.0 31.7 74.4 26.9 3.8 0.7 19.5 16.6
1st Cleaner Conc 5.7 14.3 12.2 11.6 61.9 78.5 56.3 10.6 3.9 9.2 8.2
1st Cl + Sc Conc 6.9 11.9 11.3 13.2 63.6 79.2 63.2 14.6 4.8 8.1 7.3
Rougher Conc 15.5 5.42 5.94 15.0 73.6 80.7 74.4 37.1 12.5 4.0 3.9
Rougher Tail' 84.5 0.24 0.38 4.67 94.7 19.3 25.6 62.9 87.5