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Wellgreen Project Preliminary Economic Assessment ... - OTCIQ.com

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Test No.: F40 <strong>Project</strong> No.: 50149-001 Operator: YW Date: March 16 2012<br />

Purpose: Cleaner flotation test, Repeat F17<br />

Procedure: As outlined below.<br />

Feed: 2 kg of minus 10 mesh of Master Composite<br />

Grind: 57 minutes / 2 kg @ 65% solids in laboratory Ball Mill<br />

Regrind:<br />

Target K 80 :90 µm<br />

Conditions:<br />

Reagents added, g/t<br />

Time, minutes<br />

Stage Lime SIPX MIBC* CMC DF250 PAX 3501 Grind Cond. Froth pH Eh<br />

Grind 5 57<br />

Condition 1<br />

Rougher 1 10 1 2 8.6 43.9<br />

Rougher 2 5 5 1 2 8.6 36.5<br />

Rougher 3 10 5 1 4 8.5 21.6<br />

Rougher 4 20 5 1 6 8.5 -14.7<br />

Rougher tails to Magnetic separation<br />

Regrind (PM) 0<br />

1st Cleaner 5 75 1 8 8.5 89.2<br />

1st Cleaner Scav 10 1 4 8.0 12.0<br />

2nd Cleaner 10 35 1 6 8.2 79.0<br />

3rd Cleaner 5 10 1 4<br />

Total 0 55 40 120 0 57 9<br />

* As required<br />

36 . .<br />

Stage<br />

Roughers 1stClnr and Scav. 2nd, 3rd Cleaner<br />

Flotation Cell 1000g-D12 500-g D12 250-g D12<br />

Speed: rpm 1800<br />

1600<br />

1100<br />

Assay for: Cu, Ni,S,<br />

Magnetic Conc. Extra assays for Pt, Pd, Au<br />

Metallurgical Balance<br />

Product<br />

Weight<br />

g %<br />

Assays, (Pt, Pd, Au g/t), (Cu, Ni, S, %)<br />

Cu Ni S Pt Pd Au Cu<br />

% Distribution<br />

Ni S Pt Pd Au<br />

3rd Clnr Conc 33.4 1.7 16.0 9.06 30.3 ─ ─ ─ 71.6 32.1 15.2 ─ ─ ─<br />

3rd Clnr Tls 20.8 1.1 2.96 7.89 22.0 ─ ─ ─ 8.3 17.4 6.9 ─ ─ ─<br />

2nd Clnr Tls 58.7 3.0 1.09 3.47 19.0 ─ ─ ─ 8.6 21.6 16.7 ─ ─ ─<br />

1st Clnr Scv Conc 24.9 1.3 0.17 0.53 10.7 ─ ─ ─ 0.6 1.4 4.0 ─ ─ ─<br />

1st Clnr Scv Tls 114 5.8 0.06 0.23 3.60 ─ ─ ─ 0.9 2.8 6.2 ─ ─ ─<br />

Magnetic Conc. 122 6.2 0.09 0.34 7.70 0.94 0.81 0.04 1.5 4.4 14.1 ─ ─ ─<br />

Rougher Tails 1605 81.1 0.04 0.12 1.53 ─ ─ ─ 8.6 20.4 36.9 ─ ─ ─<br />

Head (calc.) 1979 100 0.38 0.48 3.37 ─ ─ ─ 100 100 100 0.0 0.0 0.0<br />

(direct) 0.33 0.42 2.53 0.41 0.45 0.04<br />

Combined Products<br />

Product<br />

Weight<br />

g %<br />

Assays, (Pt, Pd, Au g/t), (Cu, Ni, S, %)<br />

Cu Ni S Pt Pd Au Cu<br />

% Distribution<br />

Ni S Pt Pd Au<br />

3rd Clnr Conc 33.4 1.69 16.0 9.06 30.3 ─ ─ ─ 71.6 32.1 15.2 ─ ─ ─<br />

2nd Clnr Conc 54.2 2.74 11.0 8.61 27.1 ─ ─ ─ 79.9 49.4 22.1 ─ ─ ─<br />

1st Clnr Conc 113 5.70 5.85 5.94 22.9 ─ ─ ─ 88.4 71.0 38.8 ─ ─ ─<br />

1st Cl & ClScv Conc 138 6.96 4.82 4.96 20.7 ─ ─ ─ 89.0 72.4 42.8 ─ ─ ─<br />

Magnetic Conc. 122 6.18 0.09 0.34 7.70 0.94 0.81 0.04 1.5 4.4 14.1 ─ ─ ─<br />

Rghr Conc 252 12.7 2.66 2.82 12.9 ─ ─ ─ 89.9 75.2 49.0 0.0 0.0 0.0<br />

Cleaner Circuit Mass rec<br />

Upgrade<br />

Unit Recovery<br />

Unit Performance 13% 6.01 3.22 2.34 ─ ─ ─ 81% 46% 44% ###### ###### ######<br />

Product Weight<br />

Assays, % % Distribution<br />

g % Cp Pn Po Gangue Cp Pn Po Gangue<br />

3rd Cleaner Conc 33.4 1.7 46.4 25.7 14.7 13.2 71.6 33.8 3.7 0.2<br />

3rd Cleaner Tail 20.8 1.1 8.58 22.2 30.7 38.5 8.3 18.1 4.8 0.4<br />

2nd Cleaner Tail 58.7 3.0 3.16 9.47 38.9 48.5 8.6 21.8 17.1 1.6<br />

1st Cleaner Scav Conc 24.9 1.3 0.49 1.21 26.7 71.6 0.6 1.2 5.0 1.0<br />

1st Cleaner Scav Tail 114.3 5.8 0.17 0.56 8.8 90.4 0.9 2.5 7.6 5.7<br />

Magnetic Conc. 122.3 6.2 0.26 0.75 19.4 79.6 1.5 3.6 17.8 5.4<br />

Rougher Tail 1605 81.1 0.12 0.30 3.66 95.9 8.6 19.0 44.1 85.6<br />

Head (calc.) 1979 100 1.09 1.29 6.7 90.9 100 100 100 100<br />

Combined Products Cu+Ni PGE<br />

3rd Cleaner Conc 1.7 46.4 25.72 14.69 13.2 71.6 33.8 3.7 0.2 25.1 ######<br />

2nd Cleaner Conc 2.7 31.9 24.36 20.84 22.9 79.9 51.9 8.5 0.7 19.6 ######<br />

1st Cleaner Conc 5.7 16.94 16.62 30.21 36.2 88.4 73.7 25.6 2.3 11.8 ######<br />

1st Cl + Sc Conc 7.0 13.97 13.84 29.57 42.6 89.0 74.9 30.6 3.3 9.8 ######<br />

Rougher Conc 12.7 7.72 7.81 20.2 64.3 89.9 77.4 38.2 9.0 5.5 ######<br />

Rougher Tail' 81.1 0.12 0.30 3.66 95.9 8.6 19.0 44.1 85.6

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