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09-24-2015 01:31 PM |
ASX: GGG Kvanefjeld Refinery Pilot Plant Yields Excellent Initial Results
Kvanefjeld Refinery Pilot Plant Yields Excellent Initial Results
- First phase of refinery pilot plant successfully completed at Outotec's research laboratories in Finland
- Pilot plant operated continuously for approximately 250 hours, utilising mineral concentrate generated by the concentrator pilot plant conducted in May, 2015
- High rare earth extractions of approximately 95% achieved, comfortably exceeding Feasibility Study design assumptions of 77%, uranium extractions of approximately 85% achieved in line with Feasibility Study assumptions
- Design parameters for thickening, reagent selection and filtration firmed up
- Outputs from refinery pilot plant will feed into optimisation studies to further strengthen project economics
- Next steps include conditioning of residues that contain rare earths, re-leach with mild hydrochloric acid, impurity removal, and generation of a hi-purity product
- Kvanefjeld refinery pilot plant conducted in conjunction with, and partly funded by the EURARE program, which aims to increase rare earth raw materials supply to Europe
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