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Test No.: F20 Project No.: 50149-001 Operator: YW Date: Dec 13 2011
Purpose: Cleaner flotation test, coarse grind
Procedure: As outlined below.
Feed: 2 kg of minus 10 mesh of Master Composite
Grind:
Regrind:
40 minutes / 2 kg @ 65% solids in laboratory Ball Mill
Target K80: 150 µm
Conditions: Regind K80: 34 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 8.7 37.8
Rougher 2 5 5 1 2 8.7 -11.6
Rougher 3 10 5 1 4 8.6 34.9
Rougher 4 20 5 1 6 8.6 34.4
Regrind (PM) 10
1st Cleaner 5 75 1 8 8.6 41.3
1st Cleaner Scav 10 1 4 8.5 44.8
2nd Cleaner 5 75 1 6 8.5 57.4
3rd Cleaner 5 50 1 4 7.3
Total 0 55 35 200 0 50 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
PSA 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 33.3 1.7 15.8 8.47 27.8 3.47 12.4 0.90 33.0 2.32 77.2 32.6 17.3 12.9 46.2 36.8 4.7 0.2
3rd Clnr Tls 23.0 1.2 0.87 7.07 15.0 3.62 4.08 0.20 25.4 13.3 2.9 18.8 6.5 9.3 10.5 5.7 2.5 0.7
2nd Clnr Tls 62.5 3.2 0.24 1.65 5.25 1.72 1.06 0.07 16.2 22.0 2.2 11.9 6.1 12 7.4 5.4 4.3 3.1
1st Clnr Scv Conc 12.0 0.6 0.19 1.47 8.13 2.23 0.83 0.10 22.0 17.8 0.3 2.0 1.8 3.0 1.1 1.5 1.1 0.5
1st Clnr Scv Tls 145.2 7.4 0.09 0.54 6.66 0.84 0.39 0.05 17.4 19.6 1.9 9.1 18.1 13.6 6.3 8.9 10.8 6.5
Rougher Tails 1699 86.0 0.06 0.13
Ni(S)=0.09
1.58 0.26 0.15 0.02 10.5 22.9 15.5 25.5 50.2 49.3 28.5 41.8 76.5 89.0
Head (calc.) 1975 100 0.35 0.44 2.71 0.45 0.45 0.04 11.81 22.1 100 100 100 100 100 100 100 100
(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 33.3 1.69 15.8 8.47 27.8 3.47 12.4 0.90 33.0 2.32 77.2 32.6 17.3 12.9 46.2 36.8 4.7 0.2
2nd Clnr Conc 56.3 2.85 9.70 7.90 22.6 3.53 9.00 0.61 29.9 6.81 80.1 51.4 23.8 22.2 56.7 42.5 7.2 0.9
1st Clnr Conc 118.8 6.01 4.72 4.61 13.5 2.58 4.82 0.33 22.7 14.8 82.3 63.3 29.9 34.2 64.1 47.8 11.6 4.0
1st Cl & ClScv Conc 130.8 6.62 4.31 4.32 13.0 2.55 4.46 0.31 22.6 15.1 82.6 65.4 31.7 37.1 65.2 49.3 12.7 4.5
Rghr Conc 276.0 14.0 2.09 2.33 9.65 1.65 2.32 0.17 19.9 17.5 84.5 74.5 49.8 50.7 71.5 58.2 23.5 11.0
Cleaner Circuit Mass rec Upgrade
Unit Recovery
Unit Performance 12% 7.57 3.63 2.88 2.10 5.35 5.24 1.66 0.13 94% 56% 71% 52% 73% 79% 66% 61%
Product Weight
Assays, % % Distribution
g % Cp Pn Po Gangue Cp Pn Po Gangue
3rd Cleaner Conc 33.3 1.7 45.8 24.1 10.1 20.1 77.2 34.1 3.3 0.4
3rd Cleaner Tail 23.0 1.2 2.52 20.0 19.8 57.7 2.9 19.5 4.5 0.7
2nd Cleaner Tail 62.5 3.2 0.70 4.61 9.2 85.5 2.2 12.2 5.6 2.9
1st Cleaner Scav Conc12.0 0.6 0.55 4.00 17.4 78.0 0.3 2.0 2.0 0.5
1st Cleaner Scav Tail 145.2 7.4 0.26 1.36 16.1 82.3 1.9 8.4 22.9 6.5
Rougher Tail 1699 86.0 0.18 0.33 3.71 95.8 15.5 23.8 61.7 88.9
Head (calc.) 1975.3 100 1.00 1.19 5.2 92.6 100 100 100 100
Combined Products Cu+Ni PGE
3rd Cleaner Conc 1.7 45.8 24.1 10.1 20.1 77.2 34.1 3.3 0.4 24.3 16.8
2nd Cleaner Conc 2.9 28.1 22.4 14.0 35.4 80.1 53.6 7.7 1.1 17.6 13.1
1st Cleaner Conc 6.0 13.69 13.04 11.5 61.8 82.3 65.8 13.4 4.0 9.3 7.7
1st Cl + Sc Conc 6.6 12.49 12.21 12.0 63.3 82.6 67.9 15.4 4.5 8.6 7.3
Rougher Conc 14.0 6.05 6.50 14.2 73.3 84.5 76.2 38.3 11.1 4.4 4.1
Rougher Tail' 86.0 0.18 0.33 3.71 95.8 15.5 23.8 61.7 88.9