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

Prophecy Platinum Corporation – Wellgreen Property – Project 50149-001
Table of Contents
Executive Summary.......................................................................................................................... iv
Introduction ...................................................................................................................................... vi
Testwork Summary............................................................................................................................1
1. Sample Receipt and Preparation ...............................................................................................1
2. Material Characterization...........................................................................................................1
2.1. Chemical Analysis ............................................................................................................1
2.2. Mineralogy Study ..............................................................................................................3
2.2.1. Sample Receipt and Description ............................................................................4
2.2.2. Analytical Quality Control .......................................................................................4
2.2.3. Modal Analysis and Grain Size Distribution ............................................................5
2.2.4. Liberation and Association .....................................................................................7
2.2.5. Process Mineralogy .............................................................................................14
2.2.6. Conclusions .........................................................................................................17
3. Comminution Testwork............................................................................................................18
4. Master Composite Flotation Testwork......................................................................................19
4.1. Preliminary Flotation Testwork ........................................................................................19
4.1.1. Rougher Flotation Tests.......................................................................................20
4.1.2. Cleaner Flotation Tests........................................................................................29
4.1.3. Copper Nickel Separation ....................................................................................36
4.1.4. Split-Stream Flowsheet ........................................................................................38
4.1.5. Locked Cycle Testing...........................................................................................38
4.2. Optimization Flotation Testwork ......................................................................................40
4.2.1. Split-Stream Flowsheet ........................................................................................40
4.2.2. MF2 Flowsheet ....................................................................................................44
4.2.3. Locked Cycle Tests – Split Stream.......................................................................46
5. High Nickel Composite Flotation Testwork...............................................................................47
6. Mineralogy of Flotation Products .............................................................................................50
7. Concentrate Analysis ..............................................................................................................52
Conclusions and Recommendations................................................................................................55
Appendix A – Sample Preparation
Appendix B – Chemical Analysis
Appendix C – Comminution Testing
Appendix D – Grind Calibration Tests
Appendix E – Flotation Tests
Appendix F – Locked Cycle Tests
Appendix G – QEMSCAN Analysis
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