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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 14b
SUMMARY:Emissions, Economics and Risks of Electric Smelting Furnace (ESF) for Green Steel Production
DESCRIPTION:The future of steelmaking requires changes to existing integrated process flowsheets and application of new technologies to achieve significant reduction of greenhouse gas (GHG) emissions, i.e., green steel production. One such novel approach is the use of direct reduced iron (DRI) coupled with an electrical smelting furnace (ESF) to produce hot metal for downstream steelmaking, and thus replacing the blast furnace (BF) – the biggest GHG emitting process step in the value chain. The DRI-ESF process capitalizes on the lower Scope 1 GHG emissions from direct reduction and electric furnace processes versus BF, as well as the effective gangue rejection and slag valorization capability of ESF to improve raw material flexibility.

The complexity of the iron and steel value chain and the rapidly evolving decarbonization technology landscape mean that the implementation of the DRI-ESF concept requires bespoke flowsheet development and thorough assessment of many potential options to be effective. The present study examines various potential flowsheets centred around the DRI-ESF concept, considering the key choices in flowsheet development such as DRI reductant (hydrogen or natural gas or both), specification of intermediate product, grade and type of iron ore, ESF slag valorization, downstream steelmaking technology, and the ultimate transition to ESF-based direct steelmaking. High level process and cost models were developed to simulate archetypal flowsheets, and these flowsheet cases are critically assessed with emphasis on comprehensive economics, overall GHG emission benefits, and level of technical / implementation risks. Potential risk mitigation options, enabling / synergistic technologies, and preferred implementation scenarios were also identified and discussed.
CLASS:PUBLIC
DTSTART:20230614T143000
DTEND:20230614T145000
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