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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 1
SUMMARY:Minimizing the greenhouse gas footprint of the new integrated DRI-ESF-BOF steel plant
DESCRIPTION:Many steel producers are focused on replacing their blast furnaces with direct reduced ironmaking (DRI) as a greenhouse gas (GHG) reduction strategy. While several producers have announced plans to smelt DRI with a standard electric arc furnace (EAF), others are considering electric smelting furnace (ESF) technology to produce hot metal suitable for basic oxygen furnace (BOF) steelmaking. Drivers for the adaption of the DRI-ESF-BOF route include the ability to use traditional higher gangue iron ore, slag valorization for cement manufacturing, better impurity control such as nitrogen and phosphorous in the liquid steel and to avoid stranding existing BOF steelmaking assets. 
Most producers have selected the DRI route for its potential to start with the well-understood natural gas-based technologies and then transition to greater amounts of green hydrogen as this becomes available. Carbon in hot metal will be essential for the ESF and BOF stages of the new process route even as natural gas is replaced with hydrogen.  How best to carburize the ESF hot metal when iron ore is reduced to metallic iron using hydrogen is an open opportunity for technical innovation.  Little attention has been paid to the re-use of the CO and CO2 rich gases generated from the ESF and BOF to carburize the DRI prior to smelting.  The authors will present technical approaches to re-use these off-gases in-plant to minimize the GHG emissions from the DRI-ESF-BOF value chain, especially in the context of a transition to green hydrogen-based iron ore reduction. Needed technologies such as effective gas separation, methanation, reverse water gas shift, and carbon cycling will be discussed, and a new integrated flow sheet will be proposed. 

CLASS:PUBLIC
DTSTART:20230614T103000
DTEND:20230614T105000
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