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Prophecy Platinum Corporation – Wellgreen Property – Project 50149-001
Rougher flotation test HNI-F1 was conducted using the same conditions as the rougher flotation test F3
for the Master Composite. Mass recovery and Cu and Ni recoveries were higher for high Ni composite.
The results for HNI-F1 are shown in Table 22. Detailed test conditions and results and are presented in
Appendix E.
Table 22: Rougher Flotation Test HNI-F1 Results
Test Product Weight Assays, (Pt, Pd, Au g/t), (Cu, Ni, S %)
% Distribution
% Cu Ni S Pt Pd Au Cu Ni S Pt Pd Au
Ro Conc 1 2.3 1.10 0.44 3.00 0.58 4.02 0.23 4.8 1.2 1.0 2.3 16.9 8.5
HNI-F1 Ro Conc 1-2 6.4 6.32 1.77 11.2 1.46 4.14 0.50 75.8 13.6 10.8 16.2 48.0 51.4
SIPX 70 g/t Ro Conc 1-3 13.2 3.59 4.69 15.0 1.60 3.02 0.32 88.7 74.3 29.8 36.7 72.1 66.6
K80 90 um Ro Conc 1-4 18.4 2.67 3.69 15.9 1.67 2.37 0.24 91.9 81.3 43.9 53.0 78.6 71.5
Ro Conc 1-5 26.2 1.92 2.77 17.1 1.50 1.77 0.18 94.1 86.7 67.4 68.1 84.0 76.5
Ro Tail 73.8 0.04 0.15 2.94 0.25 0.12 0.02 5.9 13.3 32.6 31.9 16.0 23.5
Head ( calc. ) 0.53 0.83 6.66 0.58 0.55 0.06
Cleaner flotation test HNI-F2 was conducted using the same test conditions as the master composite
cleaner flotation test F12. High Ni composite has a higher sulphide content which would result in a
proportionally higher mass flow to the cleaning circuit. Ni recovery was high at 66.5% for this composite
as compared to 48.5% for Master Composite. Based on the test HNI-F2, a 15% Cu+Ni concentrate grade
was achieved; the Cu and Ni recoveries were 85% and 66.5%, respectively. The combined Au, Pt, and
Pd grade of this test was 9 g/t. The Pt, Pd and Au recoveries were 29%, 66% and 61%, respectively. The
Fe/MgO ratio and MgO content of the final concentrate were within the accepted limits in this test.
The results for test HNI-F2 are shown in Table 23. Detailed test conditions and results and are presented
in Appendix E.
Table 23; Cleaner Flotation Test HNI-F2 results
Test
Product
Weight
% 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 6.8 6.53 8.21 25.0 2.53 5.54 0.68 36.0 3.02 85.2 66.5 27.1 29.1 65.6 61.5 13.4 1.0
HNI-F2 2nd Clnr Conc 10.2 4.54 6.24 23.7 2.36 4.18 0.51 36.6 5.18 88.9 75.7 38.5 40.7 74.2 69.2 20.4 2.5
No Regrind 1st Clnr Conc 15.7 3.01 4.30 19.7 1.89 2.87 0.36 32.9 9.84 90.6 80.2 49.1 50.0 78.2 75.8 28.2 7.4
CMC=200 g/t 1st Cl & ClScv Conc 17.0 2.79 4.02 19.3 1.84 2.68 0.34 32.9 10.2 91.0 81.3 52.2 52.8 79.2 77.2 30.5 8.3
Rghr Conc 22.2 2.15 3.15 16.1 1.54 2.10 0.27 29.4 12.8 91.6 83.3 57.1 57.9 81.0 79.3 35.7 13.6
1st Clnr Scv Tls 5.2 0.07 0.33 5.88 0.58 0.20 0.03 18.3 21 0.7 2.1 4.9 5.1 1.8 2.1 5.2 5.3
Rougher Tails 77.8 0.06 0.18 3.46 0.32 0.14 0.02 15.1 23.2 8.4 16.7 42.9 42.1 19.0 20.7 64.3 86.4
Head ( calc. ) 0.52 0.84 6.27 0.59 0.57 0.08 18.3 20.9
Flotation tests HNI-F3 to HNI-F5 tested the split flowsheet for this composite.
Test HNI-F3 was conducted as per the master composite flotation test F-35. Higher Ni grade and
recovery at 11% and 42% respectively, were achieved in this test.
HNI-F4 was conducted with longer rougher and scavenger flotation time with no bulk cleaner re-grind.
Almost the same Cu and Ni grade-recovery relationships were achieved in this test. The Fe/MgO ratio
and MgO content of the final concentrates were within the accepted limits in both tests.
The results for HNI-F3 and HNI-F4 are shown in Table 24. Detailed test conditions and results and are
presented in Appendix E.
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