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Test No.: F21 Project No.: 50149-001 Operator: YW Date: Dec 22 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: 72 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 73.8
Rougher 2 5 5 1 2 8.8 44.0
Rougher 3 10 5 1 4 8.8 24.1
Rougher 4 20 5 1 6 8.7 -28.8
Regrind (PM) 5
1st Cleaner 5 75 1 8 8.7 82.2
1st Cleaner Scav 10 1 4 8.5 40.0
2nd Cleaner 5 75 1 6 8.7 60.9
3rd Cleaner 5 50 1 4 8.5 83.7
Total 0 55 35 200 0 45 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 46.0 2.3 8.99 8.78 23.6 3.60 11.2 0.59 31.7 6.57 69.5 47.0 23.9 19.3 52.0 29.2 6.1 0.6
3rd Clnr Tls 40.7 2.1 0.47 2.02 6.75 2.19 2.15 0.12 16.3 22.5 3.2 9.6 6.0 10.4 8.8 5.2 2.8 1.9
2nd Clnr Tls 89.4 4.5 0.13 0.57 3.33 0.89 0.53 0.04 12.8 26.5 2.0 5.9 6.6 9 4.8 3.8 4.8 4.8
1st Clnr Scv Conc 32.9 1.7 0.15 0.81 7.18 1.17 0.66 0.06 19.3 21.5 0.8 3.1 5.2 4.5 2.2 2.1 2.7 1.4
1st Clnr Scv Tls 134.5 6.8 0.12 0.39 4.70 0.72 0.44 0.05 16.8 23.2 2.7 6.1 13.9 11.3 6.0 7.2 9.5 6.3
Rougher Tails 1626 82.6 0.08 0.15 1.24 0.24 0.16 0.03 10.9 25.8 21.8 28.4 44.4 45.4 26.2 52.4 74.2 85.0
Ni(S)= 0.08
Head (calc.) 1969 100 0.30 0.44 2.31 0.44 0.50 0.05 12.1 25.1 100 100 100 100 100 100 100 100
(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 46.0 2.34 8.99 8.78 23.6 3.60 11.2 0.59 31.7 6.57 69.5 47.0 23.9 19.3 52.0 29.2 6.1 0.6
2nd Clnr Conc 86.7 4.40 4.99 5.61 15.7 2.94 6.95 0.37 24.5 14.0 72.7 56.5 29.9 29.6 60.8 34.4 8.9 2.5
1st Clnr Conc 176.1 8.9 2.52 3.05 9.4 1.90 3.69 0.20 18.5 20.4 74.6 62.4 36.5 38.9 65.6 38.3 13.7 7.3
1st Cl & ClScv Conc 209.0 10.6 2.15 2.70 9.1 1.78 3.21 0.18 18.7 20.5 75.4 65.5 41.7 43.4 67.8 40.4 16.3 8.7
Rghr Conc 343.5 17.4 1.35 1.79 7.35 1.37 2.13 0.13 17.9 21.6 78.2 71.6 55.6 54.6 73.8 47.6 25.8 15.0
Cleaner Circuit Mass rec Upgrade
Unit Recovery
Unit Performance 13% 6.64 4.89 3.21 2.63 5.26 4.57 1.77 0.30 92% 74% 68% 56% 79% 76% 60% 46%
Product Weight
Assays, % % Distribution
g % Cp Pn Po Gangue Cp Pn Po Gangue
3rd Cleaner Conc 46.0 2.3 26.1 24.9 16.5 32.6 69.5 48.5 9.1 0.8
3rd Cleaner Tail 40.7 2.1 1.36 5.64 11.6 81.4 3.2 9.7 5.7 1.8
2nd Cleaner Tail 89.4 4.5 0.38 1.55 7.1 91.0 2.0 5.9 7.6 4.4
1st Cleaner Scav Conc32.9 1.7 0.43 2.12 16.6 80.8 0.8 3.0 6.6 1.4
1st Cleaner Scav Tail 134.5 6.8 0.35 0.99 11.2 87.5 2.7 5.6 18.1 6.4
Rougher Tail 1626 82.6 0.23 0.40 2.70 96.7 21.8 27.4 52.9 85.2
Head (calc.) 1969.1 100 0.88 1.20 4.2 93.7 100 100 100 100
Combined Products Cu+Ni PGE
3rd Cleaner Conc 2.3 26.1 24.9 16.5 32.6 69.5 48.5 9.1 0.8 17.8 15.4
2nd Cleaner Conc 4.4 14.5 15.9 14.2 55.5 72.7 58.2 14.8 2.6 10.6 10.3
1st Cleaner Conc 8.9 7.31 8.59 10.6 73.5 74.6 64.1 22.4 7.0 5.6 5.8
1st Cl + Sc Conc 10.6 6.23 7.57 11.5 74.7 75.4 67.0 29.0 8.5 4.8 5.2
Rougher Conc 17.4 3.93 4.99 11.4 79.7 78.2 72.6 47.1 14.8 3.1 3.6
Rougher Tail' 82.6 0.23 0.40 2.70 96.7 21.8 27.4 52.9 85.2