Suspended Hydrogen Reduction of Iron Oxide Concentrates

The basic feasibilities of a novel alternative ironmaking technology based on the direct gaseous reduction of fine iron oxide concentrates in a suspension reduction process are investigated. The ultimate objective is to eliminate or drastically reduce the generation of CO2 in the steel industry. The process would use gaseous reducing agents, such as hydrogen, natural gas, a reducing gas generated by partial combustion of coal or waste plastics, or a combination thereof. The process can be a part of an overall continuous direct steelmaking process, in which case the product from this process will be collected in a molten state, or the product may be collected in the solid state to be used as a feed to a secondary steelmaking process.

Development Status Products

Suspended Hydrogen Reduction of Iron Oxide ConcentratesCosts & Benefits

Parent Process: Direct Reduced Iron
Energy Savings Potential

This technology will require ~ 38% less energy than the blast furnace process or 7.4 GJ/ton of hot metal.

CO2 Emission Reduction Potential

Even when natural gas or coal is used significant reduction in carbon dioxide emissions 39% and 69% of the Blast Furnace value, respectively are estimated.


Low cost raw materials can be used.

Suspended Hydrogen Reduction of Iron Oxide Concentrates Publications