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

Prophecy Platinum Corporation – Wellgreen Property – Project 50149-001
2.2.5. Process Mineralogy
Figure 9 illustrates the mineralogically limiting copper grade-recovery curves for the master composite by
sample and by size fraction. This analysis provides an indication of the maximum achievable Cu grade
and recovery based on individual particle liberation and grade. These curves do not reflect gangue
activation and entrainment or other factors that could occur in the actual metallurgical process. Full
grade-recovery data for each sample can be found in Appendix G.
Cu Recovery %
100.0
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
Master Comp Grade vs. Recovery
0.0 10.0 20.0 30.0 40.0
Cu Grade %
SGS Minerals Services
+75 um
-75/+25 um
-25 um
Sample
Figure 9: Mineralogically Limiting Copper Grade-Recovery Curves
It can be seen that there is a significant improvement in Cu recovery when particles are reduced to sizes
finer than 75 µm. Grade recovery for Cu shows that for the sample, Cu grades of 34% and 28% can be
achieved at recoveries of 72% and 89%, respectively.
Figure 10 illustrates the mineralogically limiting nickel grade-recovery curves for the master composite on
each size fraction.
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