MTM Critical Metals Recovers High-Grade Antimony from U.S. E-Waste Using Proprietary Flash Joule Heating Technology

MTM Critical Metals (MTMCF) has achieved a significant breakthrough in antimony recovery from electronic waste using its proprietary Flash Joule Heating technology.

Rhea-AI Summary

MTM Critical Metals (MTMCF) has achieved a significant breakthrough in antimony recovery from electronic waste using its proprietary Flash Joule Heating technology. The company reported a 98% conversion rate, yielding 3.13% antimony concentration, which surpasses typical global mine grades of 0.1-1.0%. This achievement is particularly notable as antimony is designated as a critical mineral by U.S. defense and energy departments, with the U.S. currently dependent on Chinese imports. The company's technology demonstrates potential for domestic antimony production through urban mining, aligning with U.S. critical minerals strategy. MTM has secured a pre-permitted demonstration site in Texas and is in discussions with U.S. government stakeholders for potential funding support. The company operates through its U.S. subsidiary, Flash Metals USA, which holds exclusive licensing rights to the Flash Joule Heating technology developed at Rice University.

Positive

• Achieved 98% antimony recovery rate from e-waste, significantly higher than traditional mining grades (3.13% vs 0.1-1.0%)
• Successfully demonstrated commercial viability of proprietary Flash Joule Heating technology
• Secured pre-permitted demonstration site in Texas for scaling operations
• Strategic positioning for U.S. government funding support and contracts due to critical mineral status
• Potential to reduce U.S. dependence on Chinese antimony imports through domestic production

Negative

• Currently in early demonstration phase, not yet at commercial production scale
• Success dependent on securing government funding and support
• Technology limited to e-waste streams as source material

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HOUSTON, June 4, 2025 /PRNewswire/ -- MTM Critical Metals Ltd (ASX: MTM | OTCQB: MTMCF – www.mtmcriticalmetals.com.au) announced (https://cdn-api.markitdigital.com/apiman-gateway/ASX/asx-research/1.0/file/2924-02952859-6A1267050&v=04711220c3a57065317ba4efca4a3459a4e46882) it has successfully recovered high-grade antimony (Sb) from U.S.-sourced electronic waste using its proprietary Flash Joule Heating (FJH) technology. The process achieved a 98% conversion rate, yielding 3.13% antimony — a concentration that exceeds typical global antimony mine grades (0.1 – 1.0%).

This breakthrough demonstrates the commercial potential of onshore, urban mining solutions aligned with U.S. critical minerals strategy. Antimony, listed as a critical mineral by both the U.S. Department of Defense and Department of Energy, is vital to industries such as munitions, semiconductors and battery manufacturing. The U.S. currently lacks domestic antimony production and relies heavily on imports from China.

MTM's results validate the strategic relevance of recovering critical metals from legacy e-waste streams and reinforce the company's ongoing discussions with U.S. government stakeholders regarding potential funding support.

Michael Walshe, Managing Director & CEO of MTM, commented:

"Achieving 98% recovery from e-waste at over 3% grade shows the transformative power of our technology. We're well positioned to contribute to U.S. supply chain resilience and advance toward commercial deployment."

MTM recently secured a pre-permitted demonstration site in Texas and continues to engage with U.S. agencies on scaling operations.

MTM Critical Metals, based in Perth, Western Australia and Houston, Texas, specializes in advanced metal recovery technologies. The company's 100% owned US subsidiary, Flash Metals USA, possesses the exclusive licensing rights to the innovative Flash Joule Heating technology, an innovative metal recovery and mineral processing method developed by researchers at Rice University. In addition, MTM holds exploration assets prospective for niobium (Nb), rare earth elements (REE) and gold, strategically located in Western Australia and Quebec.

View original content:https://www.prnewswire.com/news-releases/mtm-critical-metals-recovers-high-grade-antimony-from-us-e-waste-using-proprietary-flash-joule-heating-technology-302473482.html

SOURCE MTM Critical Metals Ltd.

FAQ

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What antimony recovery rate did MTMCF achieve from e-waste using Flash Joule Heating technology?

MTM Critical Metals achieved a 98% conversion rate, yielding 3.13% antimony concentration, which exceeds typical global mine grades of 0.1-1.0%.

Why is MTMCF's antimony recovery technology significant for the U.S. market?

The technology is significant because the U.S. currently lacks domestic antimony production and relies heavily on Chinese imports, while antimony is listed as a critical mineral by U.S. Defense and Energy departments.

Where is MTMCF planning to scale its antimony recovery operations?

MTM has secured a pre-permitted demonstration site in Texas for scaling its operations.

What is Flash Joule Heating technology and who owns it?

Flash Joule Heating is an innovative metal recovery and mineral processing technology developed by Rice University researchers. MTM's subsidiary, Flash Metals USA, holds exclusive licensing rights.

What industries require antimony as a critical mineral?

Antimony is vital for industries such as munitions, semiconductors, and battery manufacturing.