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Test No.: F14 Project No.: 50149-001 Operator: YW Date: 28-Oct-11
Purpose: Cleaner flotation test, Repeat F12 with disperssant in the clnrs
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:
Reagents added, g/t
Time, minutes
Stage Lime SIPX MIBC* CMC DF250 PAX Calgon Grind Cond. Froth pH Eh
Grind 5 57
Condition 1
Rougher 1 10 1 2 8.8 62.1
Rougher 2 5 5 1 2 8.8 59.8
Rougher 3 10 5 1 4 8.8 28.4
Rougher 4 20 5 1 6 8.8 46.7
Regrind (PM) 0
1st Cleaner 5 150 1 8 8.9 59.1
1st Cleaner Scav 10 1 4 8.5 63.1
2nd Cleaner 5 75 1 6 8.7 63.5
3rd Cleaner 5 75 1 4 8.5 74.4
Total 0 55 35 0 300 57 9
* As required
36 . .
Stage
Roughers 1stClnr and Scav. 2nd, 3rd Cleaner
Flotation Cell 1000g-D12 500-g D12
250-g D12
Speed: rpm 1800
1600
1100
Assay for: Cu, Ni,S, Pt, Pd, Au
MgO assay for 3rd Clnr Conc.
Metallurgical Balance
Product
Weight
g % Cu
Assays, (Pt, Pd, Au g/t), (Cu, Ni %)
Ni S Pt Pd Au Cu Ni
% Distribution
S Pt Pd Au
3rd Clnr Conc 136.5 6.9 3.88 4.16 13.4 2.51 4.96 0.26 88.6 63.9 39.6 39.2 68.1 42.1
3rd Clnr Tls 41.0 2.1 0.38 1.01 5.30 1.56 1.13 0.21 2.6 4.7 4.7 7.3 4.7 10.2
2nd Clnr Tls 42.9 2.2 0.21 0.64 4.89 1.22 0.64 0.06 1.5 3.1 4.5 6 2.8 3.1
1st Clnr Scv Conc 36.3 1.8 0.21 0.55 7.65 1.21 0.72 0.05 1.3 2.2 6.0 5.0 2.6 2.2
1st Clnr Scv Tls 135.1 6.8 0.04 0.19 2.44 0.39 0.20 0.03 1.0 2.9 7.1 6 2.7 4.8
Rougher Tails 1591 80.2 0.02 0.13 1.10 0.20 0.12 0.02 5.1 23.3 37.9 36.4 19.2 37.7
Head (calc.) 1983 100 0.30 0.45 2.33 0.44 0.50 0.04 100 100 100 100 100 100
(direct) 0.33 0.42 2.53 0.41 0.45 0.04
Combined Products
Product
Weight
g % Cu
Assays, (Pt, Pd, Au g/t), (Cu, Ni %)
Ni S Pt Pd Au Cu Ni
% Distribution
S Pt Pd Au
3rd Clnr Conc 6.88 3.88 4.16 13.4 2.51 5.0 0.26 88.6 63.9 39.6 39.2 68.1 42.1
2nd Clnr Conc 8.95 3.07 3.43 11.5 2.29 4.08 0.25 91.2 68.5 44.4 46.5 72.7 52.3
1st Clnr Conc 11.1 2.51 2.89 10.2 2.08 3.41 0.21 92.7 71.6 48.9 52.5 75.5 55.3
1st Cl & ClScv Conc 12.9 2.19 2.56 9.87 1.96 3.03 0.19 94.0 73.9 54.9 57.6 78.1 57.5
Rghr Conc 19.8 1.45 1.74 7.31 1.42 2.05 0.13 94.9 76.7 62.1 63.6 80.8 62.3
Cleaner Circuit Mass rec Upgrade Unit Recovery
Unit Performance 35% 2.68 2.39 1.83 1.77 2.42 1.94 94% 87% 75% 71% 88% 75%
Product Weight
Assays, % % Distribution
g % Cp Pn Po Gangue Cp Pn Po Gangue
3rd Cleaner Conc 136.5 6.9 11.2 11.7 14.7 62.3 88.6 65.4 23.9 4.6
3rd Cleaner Tail 41.0 2.1 1.10 2.77 10.5 85.6 2.6 4.6 5.1 1.9
2nd Cleaner Tail 42.9 2.2 0.61 1.70 10.8 86.9 1.5 3.0 5.5 2.0
1st Cleaner Scav Conc 36.3 1.8 0.61 1.36 18.4 79.6 1.3 2.0 7.9 1.6
1st Cleaner Scav Tail 135.1 6.8 0.12 0.48 5.9 93.5 1.0 2.6 9.5 6.8
Rougher Tail 1591 80.2 0.06 0.34 2.55 97.1 5.1 22.3 48.1 83.2
Head (calc.) 1982.8 100 0.87 1.23 4.2 93.6 100 100 100 100
Combined Products Cu+Ni PGE
3rd Cleaner Conc 6.9 11.2 11.7 14.7 62.3 88.6 65.4 23.9 4.6 8.0 7.7
2nd Cleaner Conc 9.0 8.9 9.65 13.8 67.7 91.2 70.1 29.0 6.5 6.5 6.6
1st Cleaner Conc 11.1 7.29 8.10 13.2 71.4 92.7 73.1 34.5 8.5 5.4 5.7
1st Cl + Sc Conc 12.9 6.34 7.15 13.9 72.6 94.0 75.1 42.4 10.0 4.7 5.2
Rougher Conc 19.8 4.20 4.85 11.2 79.8 94.9 77.7 51.9 16.8 3.2 3.6
Rougher Tail' 80.2 0.06 0.34 2.55 97.1 5.1 22.3 48.1 83.2