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VERSION:2.0
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ORGANIZER;CN='8th ECIC & 9th ICSTI 2022':MAILTO:info@ecic-icsti.com
LOCATION:Room „Borgward“
SUMMARY:Sustainable steel – Carbon free steelmaking by hydrogen plasma smelting reduction
DESCRIPTION:Climate change, mainly caused by gaseous emissions like CO2, is globally one of the most important subjects. Significant efforts are required to solve this problem within the following decades. The European Commission´s low carbon roadmap suggests a reduction of CO2 emissions of 80 % by 2050 compared to 1990 levels. The steel industry, which contributes around 6 % to the worldwide anthropogenic emissions of CO2, is asked to decrease the greenhouse gas emissions.
There are two possible pathways to perform low-C economy: Carbon Direct Avoidance (CDA) and Smart Carbon Usage (SCU). In the case of SCU, process integration with reduced carbon input and carbon capture and usage are being performed. CDA includes hydrogen- and electricity-based metallurgy to remove carbon as a reducing agent for iron ore.
In this paper, CDA using hydrogen as a reducing agent for iron ore will be presented. Since 1980, laboratory investigations at the Montanuniversitaet Leoben/Austria have been shown that hydrogen – especially in the plasma state – is an excellent reducing agent for iron oxides. Based on the results of these investigations and previous laboratory work, a consortium of scientific and industrial partners decided to go a step ahead and build a bench-scale plant for HPRS (Hydrogen Plasma Smelting Reduction). The upscaling from the laboratory to bench-scale ranges from 100 g to 100 kg of iron ore. In this bench scale plant, which is located at the Donawitz site of voestalpine, smelting reduction tests using hydrogen in gas mixtures are being carried out. A transferred plasma arc will reduce and meltdown fine-grained iron ore in one step while the ore is fed into the plasma arc through a hollow electrode.
One of the challenges is to generate a stable process for the plasma arc.
For this purpose, investigations are carried out regarding the influence of the electrode material 
CLASS:PUBLIC
DTSTART:20220631T113500
DTEND:20220631T120000
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