TG Metals Targets Lithium Edge with Patent-Protected Recovery Breakthrough

TG Metals (ASX:TG6) has filed a provisional patent application with IP Australia for a proprietary metallurgical flowsheet that enhances lithium recovery from spodumene concentrate - aiming to sharpen both operational economics and future licensing potential across the sector.

The move is a strategic bolt-on for the company's Lake Johnston Project in Western Australia, where the Burmeister deposit sits as the centrepiece. The patent centres around a hybrid processing technique integrating dense media separation (DMS) with an optimised flotation process - designed to lift both recovery rates and concentrate quality. It’s technical, yes - but make no mistake: this is about margin, scalability, and IP leverage.

Patent Filed, Processing Upgraded

The company's new flowsheet resolves a known headache for lithium processors - poor flotation selectivity following DMS, which can compromise lithium recovery or quality. TG Metals’ internal forensic analysis pinpointed the issue and found a way to restore mineral selectivity during the flotation phase, a problem often affecting fine spodumene particles that escape DMS circuits.

The innovation was validated by Wrays patent attorneys and is now en route to forming the basis for further international protection. The company has created a subsidiary, TG Metals Tech Pty Ltd, to hold the IP and facilitate commercialisation pathways, including licensing and royalty agreements.

As CEO David Selfe put it:

“Higher overall recoveries translate into lower processing costs and a higher quality concentrate which increases margins. The enhanced flowsheet will form the basis of future feasibility studies at Burmeister”.

Technical Results: Selectivity Restored

The results underpinning the patent are more than theoretical. Table 1 from the company’s announcement reveals flotation recovery rates above 83% and concentrate grades reaching 5.68% Li₂O - well within the SC6 marketable threshold.

This suggests a material uplift in recoveries compared to standalone DMS or flotation approaches. The company argues that many operations relying on single-stage recovery flowsheets are likely compromising on either yield or concentrate quality - making TG Metals’ hybrid solution commercially attractive beyond its own orebody.

The Bigger Picture at Burmeister

Located about 190 km east of Hyden, the Burmeister lithium deposit sits on the Lake Johnston Greenstone Belt and forms part of a wider tenement package that includes the Jaegermeister prospect. Drilling to date has outlined an exploration target of 15.6–20.1 million tonnes grading between 0.97–1.19% Li₂O (at a 0.4% cut-off).

Although still pre-resource, the company intends to integrate the new processing methodology into feasibility studies and metallurgical programs, with results from upcoming drilling expected to inform a maiden Mineral Resource.

Commercialisation Potential Beyond Lake Johnston

Perhaps most significantly, the technology isn’t locked to TG Metals’ own ore. The flowsheet could be applied to other hard rock lithium deposits experiencing similar processing issues - giving the company a potential royalty or licensing revenue stream.

As the lithium market faces tighter margins and increased demand for high-quality SC6 product, improvements in recovery and selectivity have broad sector implications. TG’s solution not only enhances the economics of its own operation, but opens the door to tech-enabled partnerships with peers or mid-tier producers.

Investor Lens: Tech-Enabled Lithium Uplift

For investors, the announcement marks a step-change in how junior developers might capture value. This isn’t just about drilling and grades anymore—processing IP is fast becoming a competitive moat, particularly in markets where lithium price volatility demands both cost discipline and yield optimisation.

With patent protection now initiated, TG Metals is effectively transforming part of its development risk into a licensable asset. That’s a savvy play in a crowded lithium field where technology could soon be worth as much as tonnes in the ground.

TG may be small in market cap, but it’s starting to think like a much larger player.