GreenIron provides a reduction‑as‑a‑service platform that converts steelmaking residues such as mill scale and filter dust into high‑purity metal feedstock using solid‑state hydrogen reduction, producing only water as a by‑product. Their modular, on‑site furnaces are turnkey‑operated, enabling steel producers to recover up to 90 % of metal value, cut CO₂ emissions by up to 90 %, and avoid capital expenditure while integrating seamlessly into existing processes.
Funding
$10.9M 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.
FAFounders
Product
Problem
Steel production generates large volumes of oxidised by‑products such as mill scale and filter dust, which are often treated as waste or processed with fossil‑based reduction methods. This results in lost metal value, high CO₂ emissions, and additional logistics costs for steelmakers.
Solution
GreenIron offers a reduction‑as‑a‑service platform that converts these steelmaking residues into high‑purity metal feedstock using solid‑state hydrogen reduction. Hydrogen removes oxygen from the oxides at around 600 °C, producing water as the only by‑product and delivering a carbon‑neutral metal product that can be fed back into the steelmaking loop. The service is provided on a turnkey basis: GreenIron designs, builds, operates, and maintains modular furnaces on‑site, eliminating the need for customer capital expenditure. By integrating directly with existing processes, the solution recovers up to 90 % of the metal value, cuts CO₂ emissions by up to 90 % compared with conventional methods, and reduces logistics costs through local deployment. The model is delivered through an attractive, usage‑based contract that aligns economic and sustainability incentives for steel producers.
Target Audience
Primary customers are steel manufacturers seeking to improve material efficiency, reduce reliance on virgin raw materials, and meet decarbonisation targets, as well as industrial firms handling oxidised metal residues.
Features
- Solid‑state hydrogen reduction technology that uses H₂ as the sole reductant, producing water as the only emission
- Modular, low‑footprint furnaces designed for industrial‑scale, local installation and easy integration with existing steel plants
- Pre‑processing step that agglomerates fine residues into briquettes or pellets to ensure uniform gas flow and efficient reduction
- Turnkey “reduction‑as‑a‑service” offering, with GreenIron owning and operating the facility, removing capex requirements for the customer
- Ability to process a wide range of oxidised materials, initially focusing on mill scale and filter dust, with potential expansion to other metal oxides
- Energy‑efficient heat recovery system that transfers heat from outgoing gases to incoming hydrogen, minimizing overall energy demand
- Cloud‑connected monitoring and reporting tools that provide real‑time performance data and carbon‑reduction metrics