St-Georges Eco-Mining Corp. Provides Update on Lithium Processing Pilot Plant

Montréal — March 4, 2026 — Leads & Copy — St-Georges Eco-Mining Corp. is advancing its lithium processing pilot plant through its subsidiary, St-Georges Metallurgy Corp., in collaboration with technology partner Coalia. Natural Resources Canada is supporting Coalia’s lithium pilot plant project with a $4.0 million investment via the Critical Minerals Research, Development and Demonstration program.

St-Georges Metallurgy Corp. (SXM) has received approximately five (5) tonnes of spodumene concentrate from Canadian mining operations and approximately 900 kg of lithium-ion battery black mass for future processing.

To date, SXM and Coalia have processed approximately three (3) tonnes of spodumene concentrate at the leaching phase, with pilot plant operations progressing as planned. A new filter press has been installed, doubling filtration capacity.

Preliminary leaching tests validated process conditions for pilot-scale operation, demonstrating encouraging lithium recovery kinetics and controlled residue behavior across the spodumene samples. These results support the transition to pilot-scale commissioning.

Comprehensive leaching test results from pilot-scale spodumene campaigns are expected toward the end of March, while pilot-scale black mass leaching tests are anticipated to follow in early April, subject to ongoing commissioning progress.

The partners are advancing the installation of the first purification stage, a component for lithium solution concentration and downstream product generation. Completion is pending delivery of a transformer required for operation. Final commissioning of the first purification stage is expected within the coming weeks.

Mathieu Boudreau, P. Eng. and scientist at Coalia, noted the preliminary laboratory work provided a strong foundation for pilot operations, and the commissioning progress achieved to date is encouraging. He added that the installation of additional filtration capacity and the upcoming evaporation stage will position the pilot plant to generate comprehensive pilot-scale results in the coming months.

Frank Dumas, St-Georges’ chairman, said the SXM pilot plant continues to advance through commissioning with increasing throughput and infrastructure upgrades. He added that processing Canadian spodumene feedstock reinforces the strategic relevance of this program and supports the development of domestic lithium processing capabilities.

Expected next steps include:

- Completion and commissioning of the first purification stage.

- Continued spodumene pilot campaigns and data collection.

- Initiation of pilot-scale black mass leaching tests.

- Release of comprehensive pilot-scale results in Q2 2026.

St-Georges develops new technologies and holds a diversified portfolio of assets and patent-pending Intellectual Property within several subsidiaries including: EVSX, St-Georges Metallurgy, Iceland Resources, H2SX, and Quebec exploration projects including the Manicouagan and Julie nickel, copper and PGE critical mineral projects, and Notre-Dame niobium Project in Lac St-Jean.

Source: St-Georges Eco-Mining Corp.