IronRidge Resources Limited announces that it has received excellent metallurgical test-work results from the Ewoyaa Project Lithium Project in Ghana, West Africa.
Highlights include:
- High-grade spodumene concentrate with low level contaminants produced by simple crushing to 6.3mm and gravity Dense Media Separation (DMS)
- 54kg composite of diamond drill core from across the Ewoyaa deposit footprint used to generate P1 Type coarse pegmatite bulk sample at 1.68% Li2O head grade
- High-grade 6.29% Li2O spodumene concentrate with low-level contaminants produced at a coarse 6.3mm crush without the need for flotation treatment; low capital intensity implied
- Test-work replicates excellent first stage laboratory scale gravity results obtained in preliminary Heavy Liquid Separation (HLS) tests, confirming likelihood for mineralisation to beneficiate well at mine scale using industry standard DMS technology
- 9.96kg of spodumene concentrate produced for Lithium Hydroxide conversion test-work, now underway at ANSTO laboratory
Commenting on the Company’s latest progress, Len Kolff, Chief Operating Officer of IronRidge, said:
“We are pleased to report that ongoing metallurgical test-work at bench scale continues to deliver high-grade spodumene concentrate with low level contaminants.
“This is important as it demonstrates that the likely process flow-sheet can be successfully scaled up from laboratory conditions using Heavy Liquid Separation (‘HLS’) to bench scale DMS concentration using a cyclone splitter; a step closer to demonstrating mine scalability. We have successfully demonstrated that we can produce a high-quality concentrate using simple crushing, screening and DMS cyclone beneficiation at bench-scale, without the need for additional flotation.
Achieving the same high-grade concentrate with low-level contaminants utilising industry standard crushing, screening and DMS cyclone beneficiation is a big step towards confirming the amenability of the Ewoyaa type P1 coarse mineralisation to a simple process flow-sheet design at likely low capital intensity.
We have commenced a lithium hydroxide conversion test at ANSTO Laboratory Sydney, to demonstrate our concentrate is amenable to conversion and for ongoing market acceptance.”