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Test No.: F22 Project No.: 50149-001 Operator: YW Date: December 21 2011
Purpose: Cleaner flotation test, Repeat F12, Regrind 1st cleaner concentrate
Procedure: As outlined below.
Feed: 2 kg of minus 10 mesh of Master Composite
Grind: 57 minutes / 2 kg @ 65% solids in laboratory Ball Mill
Regrind:
Target K 80 : 90 µm
Conditions: Regrind K80: 51 µm
Reagents added, g/t Time, minutes
Stage Lime SIPX MIBC* CMC DF250 PAX CuSO4 Grind Cond. Froth pH Eh
Grind
Condition
5 57
Rougher 1 10 1 2 9.2 70.3
Rougher 2 5 5 1 2 9.2 43.3
Rougher 3 10 5 1 4 9.1 17.9
Rougher 4 20 5 1 6 9.1 -17.1
1st Cleaner 5 75 1 8 9.1 50.3
1st Cleaner Scav 10 1 4 8.7 -4.0
Regrind (PM) 3
2nd Cleaner 5 75 1 6 8.9 -84.4
3rd Cleaner 5 50 1 4 8.8 77.7
Total 0 55 35 200 0 60 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 48.1 2.4 10.1 7.82 25.7 3.90 11.2 0.78 30.0 5.86 76.9 42.6 25.5 21.2 52.3 35.5 5.3 0.7
3rd Clnr Tls 49.2 2.5 0.56 2.87 10.4 2.53 2.55 0.16 21.5 17.9 4.4 16.0 10.6 14.1 12.2 7.5 3.9 2.1
2nd Clnr Tls 120 6.0 0.16 0.89 6.32 1.20 0.74 0.08 16.4 21.4 3.0 12.1 15.6 16.2 8.6 9.1 7.2 6.0
1st Clnr Scv Conc 26.3 1.3 0.09 0.39 6.74 0.99 0.45 0.05 17.7 20.8 0.4 1.2 3.7 2.9 1.1 1.2 1.7 1.3
1st Clnr Scv Tls 104 5.2 0.04 0.20 2.53 0.42 0.20 0.16 13.1 22.8 0.6 2.4 5.4 4.9 2.0 15.7 5.0 5.5
Rougher Tails 1633 82.5 0.06 0.14 1.16 0.22 0.15 0.02 12.9 22.1 14.7 25.9 39.1 40.6 23.8 30.9 77.0 84.5
Head (calc.) 1980 100 0.32 0.45 2.44 0.45 0.52 0.05 13.8 21.6 100 100 100 100 100 100 100 100
(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 48.1 2.43 10.1 7.82 25.7 3.90 11.2 0.78 30.0 5.86 76.9 42.6 25.5 21.2 52.3 35.5 5.3 0.7
2nd Clnr Conc 97.3 4.91 5.28 5.32 18.0 3.21 6.83 0.47 25.7 11.9 81.2 58.6 36.1 35.3 64.5 43.0 9.1 2.7
1st Clnr Conc 217.0 11.0 2.45 2.88 11.5 2.10 3.47 0.25 20.6 17.2 84.3 70.6 51.8 51.5 73.1 52.1 16.3 8.7
1st Cl & ClScv Conc 243.3 12.3 2.20 2.61 11.0 1.98 3.14 0.23 20.3 17.6 84.6 71.8 55.4 54.5 74.2 53.3 18.0 10.0
Rghr Conc 347.2 17.5 1.55 1.89 8.48 1.51 2.26 0.21 18.1 19.1 85.3 74.1 60.9 59.4 76.2 69.1 23.0 15.5
Cleaner Circuit Mass rec Upgrade
Unit Recovery
Unit Performance 14% 6.51 4.15 3.03 2.58 4.95 3.71 1.66 0.31 91% 61% 51% 44% 71% 74% 45% 40%
Product Weight
Assays, % % Distribution
g % Cp Pn Po Gangue Cp Pn Po Gangue
3rd Cleaner Conc 48.1 2.4 29.3 22.1 21.5 27.1 76.9 43.9 11.6 0.7
3rd Cleaner Tail 49.2 2.5 1.62 7.98 18.9 71.5 4.4 16.2 10.4 1.9
2nd Cleaner Tail 119.7 6.0 0.46 2.38 14.1 83.0 3.0 11.8 18.9 5.4
1st Cleaner Scav Conc 26.3 1.3 0.26 0.92 16.7 82.1 0.4 1.0 4.9 1.2
1st Cleaner Scav Tail 103.9 5.2 0.11 0.50 6.1 93.3 0.6 2.2 7.1 5.2
Rougher Tail 1633 82.5 0.17 0.37 2.58 96.9 14.7 25.0 47.1 85.6
Head (calc.) 1980.3 100 0.92 1.22 4.5 93.3 100 100 100 100
Combined Products Cu+Ni PGE
3rd Cleaner Conc 2.4 29.3 22.1 21.5 27.1 76.9 43.9 11.6 0.7 17.9 15.9
2nd Cleaner Conc 4.9 15.3 15.0 20.2 49.6 81.2 60.1 22.0 2.6 10.6 10.5
1st Cleaner Conc 11.0 7.11 8.02 16.9 68.0 84.3 71.9 40.9 8.0 5.3 5.8
1st Cl + Sc Conc 12.3 6.37 7.25 16.8 69.5 84.6 72.9 45.8 9.2 4.8 5.4
Rougher Conc 17.5 4.50 5.23 13.6 76.6 85.3 75.0 52.9 14.4 3.4 4.0
Rougher Tail' 82.5 0.17 0.37 2.58 96.9 14.7 25.0 47.1 85.6