Boston Metal offers Molten Oxide Electrolysis (MOE), an electricity‑driven, modular platform that produces steel without carbon emissions and selectively extracts high‑value ferroalloys such as niobium, tantalum, and tin from a wide range of ore grades and waste streams. The technology enables steelmakers, miners, and ferroalloy producers to decarbonize operations, convert waste into revenue, and lower operating costs while integrating with existing industrial infrastructure.
Funding
$51M raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.





Founders
Product
Problem
Traditional metal production and critical metal recovery rely on carbon-intensive processes and costly waste handling, creating high emissions and financial liabilities for mining and steel manufacturers.
Solution
Boston Metal’s patented Molten Oxide Electrolysis (MOE) platform provides a clean, electricity‑driven method to produce steel without carbon emissions and to extract high‑value ferroalloys such as ferro‑niobium, ferro‑tantalum, and ferro‑tin from mining and metallurgical waste. The technology is modular and scalable, allowing deployment across a range of ore grades and waste feedstocks. By converting waste streams into revenue‑generating products, MOE enables a circular metals economy while reducing operating costs associated with slag storage and treatment. The process is compatible with existing industrial infrastructure and can be tailored to specific target metals, offering a flexible pathway for decarbonizing steelmaking and recovering critical materials.
Target Audience
Primary customers are steel producers, mining companies, and ferroalloy manufacturers seeking low‑carbon production methods and value recovery from waste streams.
Features
- Electricity‑based molten oxide electrolysis cells that produce steel without carbon emissions
- Selective extraction of critical ferroalloys (niobium, tantalum, tin) from mining and metallurgical waste streams
- Modular, scalable cell architecture that can be expanded by adding additional units
- Compatibility with all iron ore grades and a wide variety of waste feedstocks
- Integrated process control and monitoring to ensure high purity and efficiency
- Commercial deployment in Brazil demonstrating full‑scale critical metals production