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Proven technology
“Must Haves” for HPAL Success – all incorporated into the KNP FS
Good Materials Handling Controlled Chemistry
✓ Well known resource ✓ Feed blending & acid rate control
✓ Modular ore prep circuits no supply issues ✓ Design to avoid HPAL “hot spots”
✓ Design for high density slurry feed ✓ Nano-filtration to give “soft” HPAL feed
✓ Atmospheric Leach to reduce neutraliser consumption
Good Heat Transfer
✓ Integrate acid plant into energy balance High Process Availability
✓ High density, high temperature HPAL feed ✓ Modular approach, capacity & surge studies
✓ Energy savings included at fundamental level ✓ Proven materials of construction
✓ Proven vessel design rules, equipment selection
Subject to current review in Wood Engineering Gap Analysis
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