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Test No.: F23 Project No.: 50149-001 Operator: YW Date: Dec 22 2011
Purpose: Cleaner flotation test, Repeat F12, Use CuSO4
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 CuSO4 Grind Cond. Froth pH Eh
Grind
Condition
5 57
Rougher 1 10 1 2 9.0 51.7
Rougher 2 5 5 1 2 8.9 46.7
Rougher 3 10 5 125 1 4 8.7 33.3
Rougher 4 20 5 50 1 6 8.7 35.2
Regrind (PM) 0
1st Cleaner 5 75 20 1 8 9.0 52.2
1st Cleaner Scav 10 20 1 4 8.6 -41.6
2nd Cleaner 5 75 20 1 6 8.5 54.0
3rd Cleaner 5 50 10 1 4 8.6 49.0
Total 0 55 35 200 245 57 8
* 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, Fe, MgO
Ni(S) for Roghr tail
Metallurgical Balance
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 93.2 4.7 5.61 6.50 18.8 4.00 6.78 0.43 39.5 5.17 79.2 64.0 40.4 46.8 66.0 45.4 15.5 1.0
3rd Clnr Tls 51.8 2.6 0.44 0.97 6.86 1.15 1.03 0.08 15.9 22.5 3.5 5.3 8.2 7.5 5.6 4.7 3.5 2.3
2nd Clnr Tls 110.1 5.6 0.19 0.44 3.09 0.56 0.42 0.05 12.0 26.3 3.2 5.1 7.8 8 4.8 6.2 5.5 5.8
1st Clnr Scv Conc 57.1 2.9 0.16 0.38 4.00 0.58 0.40 0.07 14.0 24.8 1.4 2.3 5.3 4.2 2.4 4.5 3.4 2.9
1st Clnr Scv Tls 126.0 6.4 0.06 0.16 1.07 0.19 0.15 0.03 10.7 26.6 1.1 2.1 3.1 3.0 2.0 4.3 5.7 6.8
Rougher Tails 1539 77.8 0.05 0.13 0.99 0.16 0.12 0.02 10.3 26.2 11.7 21.1 35.2 30.9 19.3 34.9 66.5 81.2
Ni(S)= 0.06
Head (calc.) 1977 100 0.33 0.48 2.19 0.40 0.48 0.04 12.0 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 93.2 4.71 5.61 6.50 18.8 4.00 6.8 0.43 39.5 5.17 79.2 64.0 40.4 46.8 66.0 45.4 15.5 1.0
2nd Clnr Conc 145.0 7.33 3.76 4.52 14.5 2.98 4.73 0.30 31.1 11.4 82.6 69.3 48.6 54.2 71.5 50.1 18.9 3.3
1st Clnr Conc 255.1 12.9 2.22 2.76 9.6 1.94 2.87 0.19 22.8 17.8 85.8 74.4 56.5 62.0 76.4 56.3 24.5 9.2
1st Cl & ClScv Conc 312.2 15.8 1.84 2.33 8.6 1.69 2.42 0.17 21.2 19.1 87.2 76.7 61.7 66.1 78.7 60.8 27.8 12.0
Rghr Conc 438.2 22.2 1.33 1.70 6.41 1.26 1.76 0.13 18.2 21.2 88.3 78.9 64.8 69.1 80.7 65.1 33.5 18.8
Cleaner Circuit Mass rec Upgrade
Unit Recovery
Unit Performance 21% 4.21 3.82 2.93 3.18 3.84 3.28 2.17 0.24 91% 84% 67% 72% 84% 76% 63% 41%
Product Weight
Assays, % % Distribution
g % Cp Pn Po Gangue Cp Pn Po Gangue
3rd Cleaner Conc 93.2 4.7 16.3 18.4 18.6 46.8 79.2 65.3 23.5 2.3
3rd Cleaner Tail 51.8 2.6 1.28 2.60 14.6 81.5 3.5 5.1 10.3 2.3
2nd Cleaner Tail 110.1 5.6 0.55 1.18 6.6 91.7 3.2 5.0 9.9 5.4
1st Cleaner Scav Conc 57.1 2.9 0.46 0.98 9.2 89.3 1.4 2.1 7.2 2.7
1st Cleaner Scav Tail 126.0 6.4 0.17 0.43 2.3 97.1 1.1 2.1 3.9 6.6
Rougher Tail 1539 77.8 0.14 0.35 2.17 97.3 11.7 20.4 45.3 80.6
Head (calc.) 1977.4 100 0.97 1.32 3.7 94.0 100 100 100 100
Combined Products Cu+Ni PGE
3rd Cleaner Conc 4.7 16.3 18.4 18.6 46.8 79.2 65.3 23.5 2.3 12.1 11.2
2nd Cleaner Conc 7.3 10.9 12.7 17.1 59.2 82.6 70.5 33.7 4.6 8.3 8.0
1st Cleaner Conc 12.9 6.44 7.75 12.6 73.2 85.8 75.4 43.6 10.1 5.0 5.0
1st Cl + Sc Conc 15.8 5.34 6.51 12.0 76.2 87.2 77.6 50.8 12.8 4.2 4.3
Rougher Conc 22.2 3.86 4.76 9.2 82.2 88.3 79.6 54.7 19.4 3.0 3.2
Rougher Tail' 77.8 0.14 0.35 2.17 97.3 11.7 20.4 45.3 80.6