Defense Metals Corp. (DEFN:TSX.V; DFMTF:OTCQB; 35D:FSE) announced in a news release the results of an X-ray transmission (XRT) amenability study on samples of diamond drill core from its Wicheeda project, mineralized with rare earth elements (REEs).
The testing, done by the Saskatchewan Research Council (SRC), showed, for one, REE minerals can be identified in core with this technology. Two, "crushing to -15 mm size particles and using a 5% REE mineral lower cut-off in the sorting algorithm, demonstrated the potential of low-cost front end XRT sorting to upgrade 2.3x from approximately 11% REE mineral content to 25% REE mineral content."
Upgrading the REE mineralization via XRT sorting has the "potential to significantly reduce feed volume forwarded to downstream the hydrometallurgical process," the company stated.
"Defense Metals is excited to establish the amenability of Wicheeda REE mineralization to the application of low-cost front end upgrading via sensor-based sorting technologies. We know from our very successful flotation pilot plant and bench-scale hydrometallurgical test work that early volume reduction and upgrading has significant downstream benefits," CEO Craig Taylor said in the release.
"The quality of concentrate we can deliver to flotation process has direct benefits in terms of process recovery, and reduced costs related to reagent reduction. Based on the success of this amenability test work SRC have recommended proceeding to a series of confirmatory XRT sorting optimization tests," Taylor added.
The company noted that the "road accessible Wicheeda REE Property is located close to infrastructure approximately 80 kilometers northeast of Prince George, British Columbia. The Wicheeda project has indicated mineral resources of 4,890,000 tonnes averaging 3.02% LREO (Light Rare Earth Elements) and inferred mineral resources of 12,100,000 tonnes averaging 2.90% LREO."
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