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

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Test: LCT-4 <strong>Project</strong>: 50149-001 Date: April 18.2012 Operator: Yonika\Wei<br />

Purpose: Split flowsheet<br />

Procedure: As below.<br />

Feed: 6 x2kg of -10 mesh HNI Composite Ni Scav Tail E K 80 : 75 µm<br />

Grind: 64 minutes /2 kg at 65% solids in the lab ball mill Ni Scav Tail F K 80 : 75 µm<br />

Regrind (Ni Ro Sc) 10 minutes in the pebble mill Ni regrind K80: 32 µm<br />

Conditions:<br />

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

Stage Lime SIPX CuSO4 CMC Guar MIBC* Grind Cond. Froth pH Eh<br />

Grind - - - - - - 64<br />

Bulk Rougher 1 - 15 - - - 18 1 3 8.5 3.0<br />

Bulk Rougher 2 - 20 - - - 6 1 3 8.5 0.9<br />

Ni Scav 1 - 20 - - - 2 1 4 8.6 30.0<br />

Ni Scav 2 - 20 - - - 2 1 4 8.6 50.0<br />

Ni Scav 3 - 20 - - - 1 1 4 8.6 50.0<br />

4037<br />

Magnetic Separation on Ni Scav Tail 12<br />

Regrind Magnetic Concentrate 20 20<br />

Rougher - Magnetic 10 5 5 1 3<br />

Cleaner - Magnetic 2<br />

Bulk Cleaner (Combine Ro Conc 1-2) SIPX<br />

Bulk 1st Cleaner 1 - - - 15 15 2 2 8.4 -15.0<br />

Bulk 1st Cleaner 2 - 5 - - - 2 3 8.2 12.4 Cycle E and F: 10 g/t SIPX<br />

Bulk 2nd Cleaner 1 - 7 7 4 2 8.2 61.7<br />

Bulk 2nd Cleaner 2 - 5 - - - 4 3 8.2 -24.1<br />

Ni Cleaner (Combine Scav Conc 1-3)<br />

Ni 1st Cleaner 1 - 10 10 10 - 1 3 8.6 100.0 1st cycle: 15 CMC / 15 Guar<br />

Ni 1st Cleaner 2 - 10 - - - - 1 3 8.6 75.0<br />

- - - -<br />

Regrind (PM) - - - - - - 10<br />

Ni 2nd Cleaner - 5+5 - 2 2 2 1 2+2 8.7 200.0<br />

Ni 3rd Cleaner - - - 1 3 8.2 180.0<br />

Total 0 4192 0 39 39 43 94 10 54<br />

*As needed<br />

Stage Rougher 2nd clnr 3rd clnr PSA On Ni Regrind<br />

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

Speed: r.p.m. 1500 1600 1200 PSA Tails F

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