PMET Resources has partnered with Mitsui and Microwave Chemical to test microwave calcination technology for on-site lithium refining at Shaakichiuwaanaan, aiming to leverage Quebec’s renewable hydro power to boost value capture and reduce logistics.
- Non-binding MOU to evaluate microwave calcination for spodumene refining
- Pilot testing in Osaka using Shaakichiuwaanaan spodumene samples
- Potential to produce battery-grade lithium carbonate on site
- Strategy aims to reduce transport and carbon footprint
- Collaboration leverages Quebec’s low-cost renewable hydroelectricity
Partnership Targets On-Site Lithium Refining Innovation
PMET Resources (ASX:PMT) has taken a significant step towards integrating downstream lithium processing at its flagship Shaakichiuwaanaan project in Quebec by signing a non-binding Memorandum of Understanding with Mitsui & Co. and Microwave Chemical Co. (MWCC). The collaboration focuses on evaluating MWCC’s proprietary microwave calcination technology, which could enable electric calcination of spodumene concentrate on site, replacing conventional fossil fuel-based methods.
This initiative aligns with PMET’s recent Concept Study that identified a pathway to produce battery-grade lithium carbonate directly at Shaakichiuwaanaan, potentially capturing more value within the lithium supply chain and reducing logistics intensity. The study successfully produced 99.8% pure lithium carbonate at bench scale using Primero’s ALi® atmospheric leach process, setting a promising foundation for further downstream development.
Microwave Calcination: A Low-Carbon Processing Step
Calcination is a critical first step in converting spodumene concentrate into lithium chemicals, traditionally relying on gas or coal to generate the necessary heat. MWCC’s microwave calcination offers a low-carbon alternative by using electricity, which PMET aims to source from Quebec’s abundant and low-cost renewable hydroelectric power. This approach could reduce greenhouse gas emissions and operating costs, while enhancing supply chain resilience by producing higher-value lithium products closer to the mine.
MWCC will lead pilot plant testing at its Osaka facility using spodumene samples supplied by PMET, including 1.5 tonnes already shipped from prior testwork. Mitsui will support the evaluation from a commercial and project development perspective, helping to chart potential pathways for scaling and market integration.
Strategic Implications for PMET’s Supply Chain
On-site electric calcination could dramatically reduce the volume of material transported from Shaakichiuwaanaan, lowering logistics costs and truck traffic. It also lessens reliance on offshore conversion capacity, a notable bottleneck in the lithium supply chain. By upgrading spodumene concentrate into a lithium-enriched product in Quebec, PMET hopes to create a more integrated and Western-facing supply chain that supports Canadian and allied markets.
CEO Ken Brinsden emphasised the collaboration as a natural extension of PMET’s downstream growth strategy, highlighting the synergy between the company’s high-quality resource, MWCC’s technology, and Mitsui’s global development expertise. The partnership is poised to leverage Quebec’s renewable energy advantage to build a lower-carbon lithium chemical supply chain.
Uncertain Path Ahead Pending Pilot Results
While promising, the MOU is non-binding and contingent on successful pilot plant results, economic evaluations, and regulatory approvals. The parties will review the pilot outcomes before deciding on further commercialisation steps. They may also explore government funding opportunities aligned with critical minerals and clean energy policies.
PMET’s Shaakichiuwaanaan project already stands as a major lithium pegmatite globally, with a recent Feasibility Study confirming a robust reserve base and potential production of up to ~800 ktpa spodumene concentrate. The addition of downstream processing capabilities could enhance the project’s competitiveness and sustainability profile.
Bottom Line?
PMET’s collaboration to test microwave calcination could redefine its lithium refining footprint, but commercial success hinges on pilot outcomes and economic viability.
Questions in the middle?
- Will pilot plant results validate microwave calcination as a scalable, low-carbon alternative?
- How might on-site refining impact PMET’s project economics and supply chain resilience?
- Could government support accelerate commercial adoption of this technology in Quebec?