
Program Overview
Developing cutting-edge technologies and methodologies that enhance energy efficiency and reduce effluent associated with extraction, separation, and processing of iron ore and other minerals.
Recent Research
- Iron concentrates and pellets from secondary Minnesota iron resources are being developed with process technology and feasibility demonstration of using alternate iron resources, like tailings and iron stockpiles, to make direct reduced iron to feed low emission Electric Arc steelmaking process.
- Improved total iron analysis developed that eliminates toxic reagents while delivering greater accuracy and precision.
Related News

State identified as hub for low-emission, economically feasible steel production, securing federal funding to accelerate industry transformation.

US DOE grants will address a variety of technologies aimed at efficiencies for Minnesota’s iron ore industry

MagIron, LLC credits NRRI’s research to identify ores for direct reduced iron production.

Pilot-scale, vertical mill from Switzerland is ‘game-changer’ for industry decarbonization efforts.

NRRI research to identify and confirm major ore recovery improvements from waste taconite moves industry forward
Media Coverage
- – Northern Minnesota green iron plant to be studied – Mesabi Tribune
- – Grant to test feasibility of green iron plant on the Range – Timberjay
- – Another milestone for a pioneering green iron plant for the region – WDIO
- – Federal funding for ‘green’ iron manufacturing study could be caught up in politics – Star Tribune
- – Natural Resources Research Institute lands $1.3M for 'green iron' research – Duluth News Tribune