Hydrogen Reduction Melt-less Steelmaking (HRMLES) is a direct reduction and alloying process that produces steel products by circumventing traditional iron and steelmaking methods. This process offers several benefits, including the potential to drastically reduce energy consumption by eliminating several high-energy steps used in conventional iron and steelmaking. Additionally, HRMLES is conducted at substantially lower temperatures than conventional methods.
Iron & Steel Technologies
Hydrogen Reduction Melt-less Steelmaking (HRMLES)
Iron Ore Concentrate
Desilication ↓
Ultra-fine Concentrate
Hydrogen Reduction ↓
Fe / Steel Powder
Sintering & Alloying ↓
Near-net shape parts
Blanks (Rod, Plate +)
Powder for 3D Printing
- Direct reduction of concentrate with hydrogen
- Melt-less process
- Integrated with near-net-shape (NNS) manufacturing
- Powder-to-mill products
Melt-less Steelmaking
HRMLES enables direct reduction and alloying of ore concentrates to produce steel while eliminating high-energy steps used in conventional steelmaking.
Funded by ARPA-E in partnership with NETL and the University of Utah, this process significantly reduces energy consumption and operating temperatures.
