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2022 | OriginalPaper | Chapter

Hydrogen Direct Reduced Iron

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Abstract

Direct reduced iron is considered the primary actor in the transition to a sustainable steelmaking route. In this chapter, all the developed direct reduced iron routes are described. The basic fundamentals, related to gas direct reduction, are analyzed. In order to produce carbon-free steel, hydrogen is fundamental. The iron ores reduction through hydrogen and the various available technology solutions are described. The fundamental kinetics and thermodynamic limits solutions of the various technological solutions are underlined. These issues related to different reducing gases compositions are analyzed. The advantages related to the employment of direct reduced iron in the blast furnace are evaluated. The problematics related to the direct reduced iron handling and usage are described. Electricity and energy issues are largely described. The new route of green hydrogen produced to reduce iron oxides finds large attention in the chapter. The energetic issues related to hydrogen produced via hot or cold water electrolysis are analyzed. The technological issues related to the employment of direct reduced iron in the electric arc furnaces are described. Also, the innovative DRI-open bath slag furnaces are presented.
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Metadata
Title
Hydrogen Direct Reduced Iron
Author
Pasquale Cavaliere
Copyright Year
2022
DOI
https://doi.org/10.1007/978-3-030-98056-6_7

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