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

Prophecy Platinum Corporation – Wellgreen Property – Project 50149-001
particles attaching to each other, making the ore slurry a well dispersed suspension of individual particles.
At the same time, the dispersant also plays the role as a depressant, which is supposed to make gangue
minerals more hydrophilic and difficult to attach to the air bubbles.
An analysis of the Cu, Ni, and S values in the Cu/Ni cleaner concentrate suggests that the primary
diluents are non-sulphide gangue (NSG) minerals. It was unknown if these NSG minerals reported to the
concentrate is in the form of middlings or by direct flotation. A mineralogical analysis of selected
concentrates helped to answer this question and form the basis of the optimization program to improve
the concentrate grade.
Table 9: Summary of Cleaner Flotation Tests Conditions and Results
Grade, % Rec. % Grade % Rec. % Grade g/t Rec. % Grade g/t Rec. % Grade g/tRec. % Mass Rec. Re-grind Float SIPX pH Fe MgO Option
Test Cu Ni Pt Pd
Au % Microns min g/t % %
F9 5.88 82.0 4.40 46.8 2.17 24.2 6.45 62.7 0.56 51.2 4.9 No 22 15 Nat ─ 14.7
F10 4.49 86.9 4.36 65.5 2.52 37.9 5.23 72.4 0.31 47.0 7.0 No 22 15 Nat ─ 15.7 CMC=35 g/t
F11 11.3 83.6 2.84 15.8 2.88 16.1 13.7 60.3 0.98 48.6 2.3 25 22 15 Nat ─ 14.2 CMC=35 g/t
F12 10.2 79.2 8.02 48.5 3.62 22.1 9.14 52.8 0.99 52.7 3.1 No 22 15 Nat ─ 4.1 CMC=200 g/t
F13 20.7 50.9 4.23 7.7 2.78 4.9 10.0 15.0 1.60 26.1 0.8 No 22 15 Nat ─ 3.5 CMC=150, Guar gum=375 g/t
F14 3.88 88.6 4.16 63.9 2.51 39.2 5.00 68.1 0.26 42.1 6.9 No 22 15 Nat ─ 17.5 Calgon=300g/t
F15 15.4 76.9 3.68 13.6 3.29 12.9 11.4 37.9 0.89 31.7 1.6 No 22 15 Nat ─ 6.2 CMC=75, Guar gum=113 g/t
F16 11.9 79.7 6.58 33.0 2.69 15.0 8.55 45.1 0.85 43.4 2.4 No 22 15 Nat ─ 5.1 CMC=65 Guar gum=85 g/t
F17 11.2 74.1 7.85 40.7 3.21 18.2 8.70 46.0 0.59 31.5 2.4 No 22 15 Nat 30.0 3.7 CMC=120 g/t
F19 23.6 68.5 3.51 8.0 3.26 7.6 15.0 32.0 1.51 34.7 1.0 23 22 15 Nat 30.1 2.5 CMC=200 g/t, Pri-grind 150 um
F20 15.8 77.2 8.47 32.6 3.47 12.9 12.4 46.0 0.90 36.8 1.7 34 22 15 Nat 33.0 2.3 CMC=200 g/t, Pri-grind 150 um
F21 8.99 69.5 8.78 47.0 3.60 19.3 11.2 52.0 0.59 29.2 2.3 72 22 15 Nat 31.7 6.6 CMC=200 g/t, Pri-grind 150 um
F22 10.1 76.9 7.82 42.6 3.90 21.2 11.2 52.0 0.78 35.5 2.4 51 22 15 Nat 30.0 5.9 CMC=200 g/t, Regrind 1st clnr conc.
F23 5.60 79.2 6.50 64.0 4.00 46.8 6.78 66.0 0.43 45.4 4.7 No 22 15 Nat 39.5 5.2 CMC=200 g/t, CuSO4=245 g/t
F25 16.0 65.6 7.98 24.6 4.57 18.0 12.9 38.4 1.00 28.0 1.4 No 19 15 Nat 33.9 2.6 CMC=160 g/t
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