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Test No.: F9 Project No.: 50149-001 Operator: YW Date: 17-Oct-11
Purpose: Baseline cleaner flotation test,
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 3477 Grind Cond. Froth pH Eh
Grind 5 57
Condition 1
Rougher 1 10 1 2 8.8 42.8
Rougher 2 5 5 1 2 8.8 17.5
Rougher 3 10 5 1 4 8.8 34.4
Rougher 4 20 5 1 6 8.8 29.2
Regrind (PM) 0
1st Cleaner 5 1 8 8.9 10.2
1st Cleaner Scav 10 1 4 8.6 50.1
2nd Cleaner 1 6 8.7 37.5
3rd Cleaner 1 4 8.7 53.4
Total 0 55 25 0 0 57 9
* As required
36 . .
Stage
Flotation Cell
Speed: rpm Assay for: Cu, Ni,S, Pt, Pd, Au
MgO assay for 3rd Clnr Conc.
Sulphide sulphur assay for Rougher tail
Metallurgical Balance Malvern on combined products
g % Cu Ni S Pt Pd Au Cu Ni S Pt Pd Au
3rd Clnr Conc 96.5 4.9 5.88 4.40 15.5 2.17 6.45 0.56 82.0 46.8 25.3 24.2 62.7 51.2
3rd Clnr Tls 61.5 3.1 0.57 2.67 8.82 1.81 1.68 0.13 5.1 18.1 9.2 12.8 10.4 7.6
2nd Clnr Tls 68.4 3.5 0.29 1.12 10.1 1.66 1.02 0.10 2.9 8.4 11.7 13.1 7.0 6.5
1st Clnr Scv Conc 31.6 1.6 0.18 0.64 11.7 1.58 0.74 0.07 0.8 2.2 6.2 5.8 2.4 2.1
1st Clnr Scv Tls 145 7.3 0.06 0.22 3.66 0.57 0.22 0.02 1.3 3.5 9.0 9.5 3.2 2.7
Rougher Tails 1579 79.7 0.04 0.12 1.45
S
0.19 0.09 0.02 8.0 20.9 38.7 34.6 14.3 29.9
= Roughers 1stClnr and Scav. 2nd, 3rd Cleaner
1000g-D12 500-g D12
250-g D12
1800 1600
1100
Product
Weight
Assays, (Pt, Pd, Au g/t), (Cu, Ni %)
% Distribution
= 1.41
Head (calc.) 1982 100 0.35 0.46 2.99 0.44 0.50 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 96.5 4.87 5.88 4.40 15.5 2.17 6.45 0.56 82.0 46.8 25.3 24.2 62.7 51.2
2nd Clnr Conc 158 7.97 3.81 3.73 12.9 2.03 4.59 0.39 87.0 64.9 34.4 37.0 73.1 58.8
1st Clnr Conc 226 11.4 2.75 2.94 12.1 1.92 3.51 0.30 89.9 73.4 46.1 50.1 80.1 65.2
1st Cl & ClScv Conc 258 13.0 2.43 2.66 12.0 1.88 3.17 0.28 90.7 75.6 52.3 55.9 82.5 67.3
Rghr Conc 403 20.3 1.58 1.78 9.00 1.41 2.11 0.18 92.0 79.1 61.3 65.4 85.7 70.1
Cleaner Circuit Mass rec Upgrade Unit Recovery
Unit Performance 24% 3.72 2.47 1.72 1.54 3.06 3.05 90% 64% 56% 52% 77% 77%
Product Weight
Assays, % % Distribution
g % Cp Pn Po Gangue Cp Pn Po Gangue
3rd Cleaner Conc 96.5 4.9 17.0 12.4 14.3 56.2 82.0 48.7 11.9 3.0
3rd Cleaner Tail 61.5 3.1 1.65 7.45 15.2 75.7 5.1 18.6 8.1 2.6
2nd Cleaner Tail 68.4 3.5 0.84 2.93 23.3 73.0 2.9 8.2 13.7 2.7
1st Cleaner Scav Conc 31.6 1.6 0.52 1.50 29.0 69.0 0.8 1.9 7.9 1.2
1st Cleaner Scav Tail 145 7.3 0.18 0.53 9.01 90.3 1.3 3.1 11.3 7.2
Rougher Tail 1579 79.7 0.10 0.30 3.46 96.1 8.0 19.5 47.1 83.3
Head (calc.) 1982.3 100 1.01 1.24 5.85 91.9 100 100 100 100
Combined Products Cu+Ni PGE
3rd Cleaner Conc 4.9 17.0 12.4 14.3 56.2 82.0 48.7 11.9 3.0 10.3 9.2
2nd Cleaner Conc 8.0 11.1 10.5 14.7 63.8 87.0 67.3 20.0 5.5 7.5 7.0
1st Cleaner Conc 11.4 7.97 8.20 17.3 66.6 89.9 75.5 33.7 8.3 5.7 5.7
1st Cl + Sc Conc 13.0 7.06 7.38 18.7 66.9 90.7 77.4 41.6 9.5 5.1 5.3
Rougher Conc 20.3 4.58 4.91 15.2 75.3 92.0 80.5 52.9 16.7 3.4 3.7
Rougher Tail' 79.7 0.10 0.30 3.46 96.1 8.0 19.5 47.1 83.3