Conveners
Hydrogen-Based Reduction
- Peter Juchmann (Salzgitter Flachstahl GmbH)
Description
1.4.3
Hydrogen enriched direct reduction (DR) is a key decarbonisation technology. Natural gas driven DR is established in industry mostly outside Europe but there are no experiences with syngas of high H2 enrichment > 80%. H2-based reduction is endothermic and the influences on effective kinetics and DRI morphology are not known. Also, properties like local permeability and movement of pellets in...
The considerable reduction of CO2 emissions is one of the main challenges the steel industry is facing and the transition towards sustainable production routes is imminent. Especially H2-based direct reduction, which allows for up to 98 % emission reduction, is seeing a lot of attention [1]. Besides the availability of green H2, the supply with DR-grade iron ore pellets is a major potential...
The transition to fossil-free iron production necessitates innovative approaches to direct reduction processes utilizing hydrogen as a sustainable reductant. This study investigates the impact of pre-oxidation on the hydrogen-based reduction kinetics of magnetite ores, a critical step toward optimizing the efficiency of hydrogen-driven direct reduced iron (DRI) production. Four distinct...
The steel industry accounts for a large share of industrial carbon dioxide emissions equivalent to 7% of global emissions and at least 10% of Swedish emissions. Europe’s and Sweden’s national climate targets clearly show the way – a transition of the industry to reach net zero greenhouse gas emissions by 2045.
Currently, steelmaking in blast furnaces relies on fossil coal for energy and to...
As the goal of achieving carbon neutrality by 2050 has emerged globally, great changes are being demanded in the iron and steel industry. Among these, the need for a direct reduction process of iron ore to reduce CO2 emissions is gaining attention. The reduction process using iron ore pellets and a shaft-type reactor has already reached the commercialization stage; however, little is known...
Hydrogen ironmaking is becoming increasingly important in the field of scientific and industrial research. In particular, direct reduction proves to be an extraordinarily effective system for reducing harmful emissions in the steel sector. Naturally, the efficiency of the entire process is strongly linked to the type of agglomeration of the ferrous minerals. This work is dedicated to the...