Green Technology Metals has achieved a key milestone in metallurgical testing, with high spodumene concentrate recoveries from its Seymour Project in Ontario, Canada exceeding 72% using heavy liquid separation.

Four composite samples totalling approximately 1000kg of recent and historic diamond core were tested, representing the different mineralisation phases seen in the pegmatite within, what the company would expect to be, the final open pit mine shell at Seymour.

Heavy Liquid Separation (HLS) achieved an HLS concentrate grade of 6.0% Li2O and 1.2 % Fe2O3 at 72% recovery – and showed a strong potential to use Dense Media Separation (DMS) as the primary recovery method.

The company now plans to optimise the flowsheet to ensure both maximised lithium unit recovery, and mass yield will be achieved for the Seymour deposit.

Key milestone for project’s preliminary economic assessment

“The next few months will be an exciting time for the team at GT1 as we focus on increasing the value of our Flagship Seymour Project through metallurgical test work,” Green Technology Metals (ASX:GT1) CEO Luke Cox said.

“These results will culminate part of our Preliminary Economic Assessment (PEA) and marks another important step closer to building a vertically integrated lithium business in Ontario, Canada.”

The Seymour bulk sample permit has been approved by the Ontario Mines Department (MNDM) and sampling is planned to begin in January 2023 where the company will be extracting approximately ninety-nine tonnes from the North Aubry pegmatite outcrop within the Seymour project.

The spodumene concentrate produced through the pilot work will be used as feedstock for the Lithium Hydroxide Conversion Program (LHCP), all forming part of the ongoing feasibility study.




This article was developed in collaboration with Green Technology Metals Limited, a Stockhead advertiser at the time of publishing.


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