BEGIN:VCALENDAR
VERSION:2.0
METHOD:PUBLISH
BEGIN:VEVENT
ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 14a
SUMMARY:Influence of pre-reduced iron ore during hydrogen plasma smelting reduction
DESCRIPTION:Carbon Direct Avoidance (CDA), Smart Carbon Usage (SCU) and Circular Economy are strategic pathways that the European Steel Association's members created to reach a CO2-neutral European steel industry. Climate change can only be tackled by reducing the anthropogenic greenhouse gas emissions, particularly CO2 ones. The iron and steel industry must also contribute to mitigating CO2 emissions, as it accounts for 5.7% of the European Union's overall emissions and is even responsible for 7% of global anthropogenic CO2 emissions. To achieve the goals of the European Green Deal and reduce emissions by at least 55% from 1990 levels by 2030, today's steel industry and its processes must be completely transformed. Highly promising process technologies use hydrogen (H2) as the primary reducing agent instead of carbon-carrier substances (coke) to simultaneously reduce iron ores and achieve the climate target, thus following the CDA pathway. The Hydrogen Plasma Smelting Reduction (HPSR) exploits the highly energetic hydrogen species (e.g. H, H+) existing in a hydrogen-containing plasma arc as reducing agents for the ore. The high energy of such hydrogen plasma species helps overcome the reaction’s activation energy, leading to a 15 times higher reduction potential than the gaseous molecular hydrogen. The plasma species are created by the thermal energy of a DC-transferred arc between a hollow graphite electrode (HGE) and the melting bath, enabling a one-step direct production from iron ore to steel. Introducing iron ores with different pre-reduction degrees into the reaction zone (plasma/melt interface) influences the hydrogen utilization degree, the total process time, and the metal phase's microstructure. With this knowledge, optimal combinations of pre-reduction states via direct reduction and subsequent processing with hydrogen plasma to crude steel can be achieved to obtain the highest H2 utilization and optimal steel quality.
CLASS:PUBLIC
DTSTART:20230615T094000
DTEND:20230615T100000
END:VEVENT
END:VCALENDAR