Abstract
In this chapter, electric steelmaking is introduced with a short review: share, raw materials, operation, typical equipment, off-gas treatment, emissions. Electric-based steelmaking enjoys a much comfortable position than integrated classical blast furnace—oxygen steelmaking facilities, regarding greenhouse emissions. This is compared both for regions and for the world. For instance, the mostly EAF-based NAFTA countries are nowadays the region where the production of steel generates lower specific emissions. This said (and detailed), the chapter continues with a discussion of the CO2 emissions of the electric arc furnaces. A reference is be made to the use of alternative raw materials, as DRI/HBI, pig iron and hot metal. In relation with the EAF design, factors to be analyzed are the effects of different furnace designs on emissions: conventional, twin shell, conveyor scrap preheating, and shaft scrap preheating are considered. The use of chemical energy is reviewed, as well as the effect of an external factor: how electric energy is generated.
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The author gratefully acknowledges the helpful comments and suggestions of the reviewers, which have improved the presentation.
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Madias, J. (2016). Electric Arc Furnace. In: Cavaliere, P. (eds) Ironmaking and Steelmaking Processes. Springer, Cham. https://doi.org/10.1007/978-3-319-39529-6_16
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DOI: https://doi.org/10.1007/978-3-319-39529-6_16
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