01.06.2013 Views

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

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

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

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Test: F35 <strong>Project</strong>: 11603-005 50149-001 Date: 14-Feb-12 Operator: YW<br />

Purpose: Split flowsheet, CMC and Guar 50:50 mix<br />

Procedure: As below.<br />

Feed: 2x2 kg of -10 mesh Master Composite<br />

Grind: 57 minutes/2 kg at 65% solids in a lab mill<br />

Regrind 4 minutes in the pebble mill (bulk clnr 1 concentrate)<br />

Regrind 8 minutes in the pebble mill (Ni clnr 1 concentrate) Feed K80 : 90 µm<br />

Cu regrind K80: 41 µm<br />

Conditions: Ni regrind K80: 35 µm<br />

Reagents added, grams per tonne Time, minutes<br />

Stage Lime SIPX 4037 CMC Guar MIBC* Grind Cond. Froth pH Eh<br />

Grind 57<br />

Bulk Rougher 1 15 30 30 1 2 8.8 26.9<br />

Bulk Rougher 2 10 20 20 1 2 8.7 19.4<br />

Ni Scav 1 30 20 20 4 8.7 25.9<br />

Ni Scav 2 30 4 8.7 13.9<br />

Ni Scav 3 30 4 8.7 -59.6<br />

Combine Ro Conc 1-2<br />

Bulk 1st Cleaner A 10 10 2 8.7 64.0<br />

B 2 2<br />

Regrind (PM) 4<br />

Bulk 2nd Cleaner 0 5 5 2<br />

5 2<br />

Bulk 3rd Cleaner A (this may not be needed) 0 2.5 2.5 2 7.9 105.0<br />

B 2 2<br />

Combine Scav Conc 1-3<br />

Ni 1st Cleaner 20 15 15 3 8.8 53.4<br />

10 3 8.7 -44.0<br />

Regrind (PM) 8<br />

Ni 2nd Cleaner 5 5 5 4 8.6 54.1<br />

Ni 3rd Cleaner 5 2.5 2.5 3 8.4 87.8<br />

Total 0 164 0 110 110 0 69 2<br />

*As needed<br />

41<br />

Stage Rougher 2nd clnr<br />

3rd clnr<br />

Flotation Cell 2000 g D-12 500 g D-12 250 g D-12<br />

Speed: r.p.m. 1500 1600<br />

1200<br />

Metallurgical Balance<br />

Product<br />

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

g % Cu Ni Pt Pd Au S Fe MgO Cu Ni Pt Pd Au S Fe MgO<br />

Bulk 3rd Clnr Conc. 50.0 1.26 18.5 7.53 3.10 15.5 1.57 30.3 31.3 2.11 70.2 21.6 8.8 34.9 37.7 13.2 3.0 0.1<br />

Bulk 3rd Clnr Tail 8.2 0.21 3.18 11.6 4.19 7.87 0.42 21.6 29.1 7.91 2.0 5.5 1.9 2.9 1.7 1.5 0.5 0.1<br />

Bulk 2nd Clnr Tail 70.1 1.77 1.68 7.01 2.92 4.69 0.20 16.3 25.6 12.1 8.9 28.2 11.6 14.8 6.7 9.9 3.5 0.9<br />

Bulk 1st Clnr Tail 106 2.69 0.22 0.85 1.08 0.96 0.05 4.12 12.2 25.4 1.8 5.2 6.5 4.6 2.5 3.8 2.5 2.9<br />

Ni 3rd Clnr Conc 12.2 0.31 3.00 4.13 5.51 6.00 1.60 32.9 48.0 2.32 2.8 2.9 3.8 3.3 9.4 3.5 1.1 0.0<br />

Ni 3rd Clnr Tail 13.5 0.34 0.75 2.61 4.52 2.25 0.23 26.5 42.3 6.61 0.8 2.0 3.5 1.4 1.5 3.1 1.1 0.1<br />

Ni 2nd Clnr Tail 70.3 1.78 0.33 1.30 2.29 1.16 0.12 17.2 32.0 12.7 1.8 5.3 9.1 3.7 4.0 10.5 4.4 1.0<br />

Ni 1st Clnr Tail 121 3.07 0.18 0.45 1.03 0.54 0.05 4.40 14.6 23.3 1.7 3.1 7.1 3.0 2.9 4.6 3.4 3.1<br />

Ni Scav Tail 3504 88.6 0.04 0.13 0.24 0.20

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!