USCM–Columbia red mud metals: process and economics lens for mine planners
Reviewed by Tom Sullivan
First reported on MINING.com
30 Second Briefing
US Critical Materials Corp. and Columbia University have launched a two-year “Mud to Metal” programme to extract defence-critical gallium, scandium, titanium and rare earth elements from red mud waste sourced from multiple alumina refineries, including operations linked to Alcoa. Led by Columbia’s Greeshma Gadikota, the work will trial oxidative leaching, selective separations and co-recovery of titanium dioxide and iron oxide, coupled with techno-economic and lifecycle modelling to test commercial viability. Success could create a domestic byproduct supply chain that complements USCM’s high-grade Sheep Creek rare earth project in Montana.
Technical Brief
- Red mud feedstock is sourced from multiple alumina refineries, including facilities associated with Alcoa.
- Columbia’s Greeshma Gadikota leads the programme, providing process design, modelling and academic laboratory capability.
- Experimental workflow combines oxidative leaching with selective separation stages and co-recovery of TiO₂ and Fe oxides.
- Techno-economic and lifecycle models will quantify scalability, operating costs and environmental burdens of proposed flowsheets.
- Partnership complements USCM’s existing collaboration with Idaho National Laboratory on domestic critical mineral supply development.
Our Take
Gallium and scandium appear in only 18 keyword-matched pieces across our database, signalling that US Critical Materials’ focus on these defence-critical elements from red mud could position it in a relatively uncrowded niche compared with more commonly covered battery metals.
Montana features in our coverage mainly for hard-rock rare earth exploration, so pairing the Sheep Creek rare earth deposits with Indiana coal-plant residues suggests USCM is hedging between conventional mining and secondary recovery pathways to build a diversified US supply base.
Projects tagged under both Research and Sustainability in our database often progress into pilot-scale demonstrations within a few years, implying that if Mud to Metal proves technically viable, utilities and alumina refiners in the USA could face pressure to reassess red mud and coal ash liabilities as potential strategic feedstock rather than waste.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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