IronRidge Resources - Exploration Update - Ghana Lithium Portfolio
Bulk Sample Test-Work Delivers High-Grade Spodumene Concentrate
with Low Contaminants
Ø High-grade spodumene concentrate with low level contaminants produced by simple crushing to 6.3mm and gravity Dense Media Separation (DMS)
Ø 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
Ø 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
Ø 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
Ø 9.96kg of spodumene concentrate produced for Lithium Hydroxide conversion test-work, now underway at ANSTO laboratory
References to figures relate to this release visible in PDF format by clicking the link below:
Commenting on the Company's latest progress,
"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."
DMS Cyclone Results:
Diamond drill core from across the Ewoyaa deposit footprint was composited to generate a 54kg bulk sample of type P1 coarse grained pegmatite at a 1.68% Li2O head-grade (refer to announcement of
The entire bulk sample was then crushed to 6.3mm and screened at -0.5mm to generate 44kg of feed material for Dense Media Separation ('DMS') test work utilising a 100mm diameter DMS cyclone set to split at 2.6, 2.85 and 2.9 Specific Gravity ('SG') ranges.
A total of 9.96kg of high-grade spodumene concentrate at 6.29% Li2O with low level contaminants (1.07% Fe2O3, combined 1.48 % Na2O plus K2O) was produced. This test was not optimised nor did it incorporate magnetic separation to lower the iron content, yet still resulted in a lithium recovery in excess of 75%.
The test-work represents the next stage in 'upscaling' the process flow-sheet utilising industry standard technology (crushing, screening and gravity DMS) which would likely be used at the mine scale.
It is a significant step closer in demonstrating the amenability of the mineralisation to beneficiate to a high-grade and clean concentrate using mine scale industry standard technology.
The concentrate produced was sent to ANSTO for preliminary tests to determine the amenability to the production of lithium hydroxide. This work is well advanced and will be reported in the near future.
The Ewoyaa deposit is well located within 1km of a bitumen highway and adjacent to grid power, within 100km of an operating deep-sea port and within the pro-mining, stable jurisdiction of
Certain information contained in this announcement would have been deemed inside information for the purposes of Article 7 of Regulation (EU) No 596/2014 until the release of this announcement.
For any further information please contact:
| || |
| || |
Tel: +61 7 3303 0610
| || |
| || |
Tel: +44 (0)20 3470 0470
Nominated Adviser and Broker
Tel: +44 (0)20 3004 9512
Competent Person Statement:
Information in this report relating to the exploration results is based on data reviewed by Mr
The information in this announcement that relates to metallurgical results is based on information compiled by Mr
Notes to Editors:
The Company entered into earn-in arrangements with
The Company entered into an agreement with
The Company entered into conditional earn-in arrangements in Côte d'Ivoire,
Monogorilby is prospective for province scale titanium and bauxite, with an initial maiden resource of 54.9MT of premium DSO bauxite. Monogorilby is located in central
May Queen is located in
Wholly owned Quaggy contains highly anomalous platinum, palladium, nickel, cobalt and copper exploration targets and is located in
Tchibanga is located in south-western
This information is provided by RNS, the news service of the
Quick facts: IronRidge Resources Ltd
Market Cap: £64.57 m
NO INVESTMENT ADVICE
The Company is a publisher. You understand and agree that no content published on the Site constitutes a recommendation that any particular security, portfolio of securities, transaction, or investment strategy is...FOR OUR FULL DISCLAIMER CLICK HERE