Despite the dominance of the blast furnace ironmaking process, increasing attention is being paid to the development of new technologies with lower energy consumption and CO2 emissions. At the University of Utah, a novel flash ironmaking technology to meet these demands is under development. This technology eliminates the highly problematic cokemaking and pelletization/sintering steps by directly utilizing iron ore concentrate, which is currently produced in large quantities in North America and elsewhere. This transformative technology is expected to allow significant energy saving and reduced CO2 emissions compared with the blast furnace process. It has been demonstrated that iron of more than 95 % metallization can be obtained by reduction with hydrogen or a mixture of carbon monoxide and hydrogen in 2–7 s at temperatures of 1473–1823 K. The development of the technology has gone through the stages of proof-of-concept and small laboratory flash reactor tests. A large prototype bench reactor that has most of the features of an eventual industrial reactor has been commissioned. In this paper, some details of advances made in the development are discussed.

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The kinetics of hydrogen reduction of fine iron oxide particles

Development of a Novel Flash Ironmaking Technology with Greatly Reduced Energy Consumption and CO2 Emissions

Despite the dominance of the blast furnace ironmaking process, increasing attention is paid to the development of a new technology with lower energy consumption and CO2 emissions. An ideal process would also use widely available iron ore concentrate. It should also require much less capital investment than the blast furnace/coke oven combination. At the University of Utah, we are working on a drastically novel process for an alternative technology to meet these demands. In response to increasing concerns about energy consumption and atmospheric emissions from the conventional and other emerging ironmaking plants, especially carbon dioxide, we are developing the Flash Ironmaking Process. This novel technology eliminates the highly problematic cokemaking and pelletization/sintering steps by directly utilizing iron ore concentrates, which are in abundance in the United States and elsewhere. In this paper, some recent advances on this work are discussed.

background

https://avestia.com/MCM2015_Proceedings/files/papers/MMME336.pdf

The kinetics of hydrogen reduction of fine iron oxide particles

Citations

Development of a Novel Flash Ironmaking Technology with Greatly Reduced Energy Consumption and CO2 Emissions

Novel Flash Ironmaking Technology

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