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Test No.: F11 Project No.: 50149-001 Operator: YW Date: 19-Oct-11
Purpose: Cleaner flotation test, Repeat F10 with regrind
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: 25 minutes
Target K 80 :90 µm
Conditions: Regind K80 :28 µm
Reagents added, g/t Time, minutes
Stage Lime SIPX MIBC* CMC DF250 PAX 3477 Grind Cond. Froth pH Eh
Grind 5 57
Condition 1
Rougher 1 10 1 2 9.0 50.1
Rougher 2 5 5 1 2 8.9 15.5
Rougher 3 10 5 1 4 8.9 40.0
Rougher 4 20 5 1 6 8.8 21.4
Regrind (PM) 25
1st Cleaner 5 20 1 8 8.9 44.5
1st Cleaner Scav 10 1 4 8.5 31.1
2nd Cleaner 10 1 6 8.7 53.9
3rd Cleaner 7 5 1 4 8.6 46.2
Total 0 55 32 35 0 82 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 Malvern on 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 44.7 2.3 11.3 2.84 16.5 2.88 13.7 0.98 83.6 15.8 16.4 16.1 60.3 48.6
3rd Clnr Tls 56.8 2.9 0.32 1.86 3.51 1.28 1.25 0.07 3.0 13.2 4.4 9.1 7.0 4.4
2nd Clnr Tls 64.2 3.2 0.19 3.17 6.44 1.51 1.17 0.06 2.0 25.3 9.2 12.1 7.4 4.3
1st Clnr Scv Conc 30.6 1.5 0.15 2.75 8.37 0.93 0.66 0.03 0.8 10.5 5.7 3.6 2.0 1.0
1st Clnr Scv Tls 179.1 9.0 0.04 0.50 5.52 0.84 0.33 0.03 1.3 11.2 22.0 18.8 5.8 6.0
Rougher Tails 1610 81.1 0.04 0.12 1.18 0.20 0.11 < 0.02 9.3 24.1 42.3 40.3 17.4 35.7
Head (calc.) 1985 100 0.30 0.40 2.26 0.40 0.51 0.05 100 100 100 100 100 100
(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 44.7 2.25 11.3 2.84 16.5 2.88 13.7 0.98 83.6 15.8 16.4 16.1 60.3 48.6
2nd Clnr Conc 102 5.11 5.16 2.29 9.23 1.98 6.73 0.47 86.6 29.0 20.8 25.2 67.3 53.0
1st Clnr Conc 166 8.35 3.23 2.63 8.15 1.80 4.58 0.31 88.6 54.3 30.0 37.3 74.7 57.3
1st Cl & ClScv Conc 196 9.89 2.75 2.65 8.18 1.67 3.97 0.27 89.4 64.8 35.7 40.9 76.7 58.3
Rghr Conc 375 18.9 1.46 1.62 6.91 1.27 2.23 0.15 90.7 75.9 57.7 59.7 82.6 64.3
Cleaner Circuit Mass rec Upgrade Unit Recovery
Unit Performance 12% 7.74 1.75 2.39 2.27 6.14 6.35 94% 36% 67% 58% 80% 85%
Product Weight
Assays, % % Distribution
g % Cp Pn Po Gangue Cp Pn Po Gangue
3rd Cleaner Conc 44.7 2.3 32.8 8.04 6.27 52.9 83.6 16.3 3.4 1.3
3rd Cleaner Tail 56.8 2.9 0.93 5.27 3.81 90.0 3.0 13.6 2.6 2.7
2nd Cleaner Tail 64.2 3.2 0.55 8.96 8.66 81.8 2.0 26.2 6.7 2.8
1st Cleaner Scav Conc 30.6 1.5 0.43 7.69 15.0 76.9 0.8 10.7 5.5 1.3
1st Cleaner Scav Tail 179.1 9.0 0.13 1.28 13.3 85.3 1.3 10.4 28.7 8.2
Rougher Tail 1610 81.1 0.10 0.31 2.74 96.8 9.3 22.8 53.1 83.7
Head (calc.) 1985.0 100 0.88 1.11 4.2 93.8 100 100 100 100
Combined Products Cu+Ni PGE
3rd Cleaner Conc 2.3 32.8 8.04 6.27 52.9 83.6 16.3 3.4 1.3 14.1 17.6
2nd Cleaner Conc 5.1 14.9 6.49 4.89 73.7 86.6 30.0 6.0 4.0 7.4 9.2
1st Cleaner Conc 8.3 9.37 7.45 6.35 76.8 88.6 56.1 12.7 6.8 5.9 6.7
1st Cl + Sc Conc 9.9 7.97 7.48 7.69 76.8 89.4 66.8 18.2 8.1 5.4 5.9
Rougher Conc 18.9 4.23 4.52 10.4 80.9 90.7 77.2 46.9 16.3 3.1 3.7
Rougher Tail' 81.1 0.10 0.31 2.74 96.8 9.3 22.8 53.1 83.7