US startup turning mining waste into defense minerals gets funding

US mining tech startup FAST Metals is moving closer to commercial deployment after raising $4.3 million in pre-seed funding and securing its first customer, Metalox Mineral Corporation. 

As part of the strategic partnership, FAST Metals will process one ton of red mud and other iron-rich waste feedstock per week at Metalox’s Florida facility, a step the company says demonstrates the commercial viability of its mineral recovery technology. 

The startup has also signed additional agreements with trading partners as it works to expand its operations. The funding round was led by New Climate Ventures, with backing from Azolla Ventures, Humba Ventures, Astor Swiss, and Rio Tinto’s mining technology accelerator with Founders Factory.

Transforming toxic mining waste into critical materials

A growing mountain of industrial waste could become a new source of critical materials. Global alumina production has generated more than four billion tons of red mud, a byproduct of bauxite processing that contains an estimated $3 trillion to $4 trillion worth of metals used in defense, manufacturing and clean energy industries. 

Now, FAST Metals is developing technology designed to recover value from this highly alkaline waste stream by removing iron from low-grade materials such as red mud and extracting rare earth elements and other base metals. The approach aims to transform a long-standing environmental challenge into a commercial opportunity while reducing the volume of waste and the regulatory burden associated with its storage and management.

According to Dr. Sumedh Gostu, co-founder and CEO of FAST Metals, the company’s patented technology platform is designed to recover critical minerals from low-grade feedstock by removing iron and transforming alumina refining waste into a new source of valuable materials. The technology can extract metals and minerals including iron, gallium, alumina, titania and rare earth elements, while creating a cleaner material stream that can be processed more efficiently for further recovery. 

Gostu said the process aims to unlock previously untapped resources from industrial waste while reducing the environmental impact associated with traditional waste management.

Helping miners recover more value from existing assets

The company notes its technology could help miners and extractors unlock new revenue opportunities from existing assets while reducing operational costs. The newly raised capital will be used to advance FAST Metals’ technical and commercial development, including further optimization of its recovery process and expanding engagement with customers across the mining, metals and critical minerals industries.

As governments in the US and other Western markets look to reduce their dependence on China’s dominance across the critical minerals supply chain, the startup is positioning waste recovery as a potential alternative source of strategic materials.

“Further proven by our valued partnership with Metalox, we offer miners and extractors a more sustainable approach that can unlock new revenue from existing assets while lowering operating costs” Gostu concluded.

Furthermore, while the US remains a key market, FAST Metals is also targeting regions with large alumina industries, including Australia, as well as opportunities across the EU, the Middle East, India and North America.