FAST Metals’ US$4.3M red‑mud deal: process design and scale‑up notes for miners
Reviewed by Tom Sullivan

First reported on MINING.com
30 Second Briefing
FAST Metals has raised US$4.3 million in pre‑seed funding and signed a commercial partnership with Metalox Mineral Corp. to process one long ton per week of red mud and other iron‑bearing waste at Metalox’s Florida facility, aiming to prove the commercial viability of its patented iron‑removal technology. The process targets more than 4 billion tonnes of global bauxite residue stockpiles, which FAST estimates contain US$3–4 trillion in recoverable metals, converting alumina refinery waste into saleable mineral products. Backers include New Climate Ventures, Azolla Ventures, Astor Swiss and Rio Tinto, with an advisory board featuring ex‑Glencore copper/zinc head Nick Popovic and McNulty Curves creator Terry McNulty.
Technical Brief
- FAST will treat one long ton per week of red mud and other iron-bearing wastes at Metalox’s Florida plant.
- Processing campaign is framed as a pilot-scale proof of commercial performance rather than a lab trial.
- Feedstock includes alumina refinery bauxite residue plus unspecified additional low‑grade iron-bearing waste streams.
- FAST’s patented flowsheet is described as an iron‑removal step that upgrades low‑grade residues to mineral products.
- Global red‑mud stockpiles are cited at >4 billion tonnes, consistent with a 2021 MDPI review.
- Capital from New Climate Ventures, Azolla Ventures, Humba Ventures, Astor Swiss and Rio Tinto targets process optimisation and commercial scaling.
Our Take
Within our 1259 Mining stories, aluminium-linked items are usually about primary bauxite or smelting efficiency, so a red‑mud reprocessing play like FAST Metals is an outlier that, if technically proven at Metalox’s Florida facility, could reframe tailings as a mainstream resource class rather than a liability.
The presence of majors such as Glencore, Nyrstar USA and Rio Tinto in the same red‑mud and alumina waste space suggests that FAST Metals’ process, if scalable beyond the current 1 long ton per week level, could become a bolt‑on technology for existing refineries rather than needing greenfield sites in the United States.
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.
Related Articles
Related Industries & Products
Mining
Geotechnical software solutions for mining operations including CMRR analysis, hydrogeological testing, and data management.
CMRR-io
Streamline coal mine roof stability assessments with our cloud-based CMRR software featuring automated calculations, multi-scenario analysis, and collaborative workflows.
HYDROGEO-io
Comprehensive hydrogeological testing platform for managing, analysing, and reporting on packer tests, lugeon values, and hydraulic conductivity assessments.
GEODB-io
Centralised geotechnical data management solution for storing, accessing, and analysing all your site investigation and material testing data.


