Metallium Expands Critical Metals Reach with Breakthrough Multi-Feedstock Tests

Breakthroughs Across Multiple Critical Metal Feedstocks

Metallium Limited (ASX:MTM) has unveiled a series of successful tests using its proprietary Flash Joule Heating (FJH) technology that significantly broaden its commercial horizons beyond its flagship electronic waste processing. The company has demonstrated the ability to process raw rare earth ore, germanium-bearing industrial wastes, spent automotive catalytic converters, and red mud, each yielding promising results that could reshape critical metal recovery processes.

Most notably, Metallium converted unbeneficiated rare earth ore containing roughly 12% total rare earth oxides directly into an over 83% mixed rare earth chloride product, achieving more than fourfold enrichment of neodymium and praseodymium (NdPr) in an initial unoptimised cycle. This suggests a potential to bypass conventional beneficiation stages, which are typically capital and chemical intensive, simplifying the front end of rare earth processing.

Germanium and Platinum Group Metals Yield High Enrichment in Single Cycles

The technology also achieved substantial germanium enrichment, up to 280 times from zinc smelter waste, 240 times from semiconductor manufacturing waste, and 35 times from defence-related industrial waste, highlighting its versatility across multiple secondary feedstocks. Germanium’s strategic importance in semiconductors, AI infrastructure, and defence systems underscores the value of recovering it from underutilised industrial residues.

In the realm of platinum group metals (PGMs), Metallium produced a greater than 60% purity PGM-rich product containing platinum, palladium, and rhodium from spent automotive catalytic converters in a single treatment cycle. This contrasts sharply with conventional multi-stage recycling processes, which are more time-consuming and complex. Metallium’s approach could reduce processing times by approximately 75%, offering a streamlined path to recover these valuable metals.

Red Mud Testing Unlocks Value from Industrial Waste

Red mud, a voluminous waste byproduct of alumina production, was also successfully processed. Metallium’s testing removed about 99% of iron and 94% of silicon while retaining approximately 95% of aluminium and concentrating gallium into a separate stream. This dual outcome both upgrades a problematic industrial waste and recovers critical metals, potentially transforming red mud from a liability into a source of value-added products.

Commercialisation and Strategic Alignment with US Supply Chain Goals

These technical achievements are not purely academic. Metallium is actively engaging with industry participants from defence, manufacturing, and critical minerals sectors who are bringing feedstocks for evaluation. The company aims to convert successful test results into commercial agreements, pursuing a dual strategy of operating owned processing facilities, starting with e-waste, and licensing its technology to third parties. This capital-light licensing model could accelerate adoption across larger volumes without requiring Metallium to own every processing site.

Metallium’s US-based technology platform aligns well with recent strategic initiatives, including the White House’s announcement of over US$2 billion in new critical mining and processing investments aimed at reducing reliance on foreign supply chains. The company’s focus on rare earths, germanium, gallium, and other defence-critical metals positions it to benefit from accelerating domestic supply chain development.

Looking ahead, Metallium plans to optimise recovery rates, improve product purity, and scale up processing flowsheets tailored to specific feedstocks. These efforts will run in parallel with the company’s primary focus on electronic waste processing, which remains its near-term commercial priority. The unfolding commercial discussions and technology licensing opportunities will be key indicators of how broadly Metallium’s Flash Joule Heating platform can disrupt traditional critical metal processing.