The Melting Behavior of Hydrogen Direct Reduced Iron in Molten Steel and Slag: An Integrated Computational and Experimental Study

Calderon Hurtado, Fabian Andres; Govro, Joseph; Emdadi, Arezoo; O’Malley, Ronald J.

doi:10.3390/met14070821

The Melting Behavior of Hydrogen Direct Reduced Iron in Molten Steel and Slag: An Integrated Computational and Experimental Study

Journal Article · Wed Jul 17 00:00:00 EDT 2024 · Metals

DOI:https://doi.org/10.3390/met14070821· OSTI ID:2403571

; Govro, Joseph; Emdadi, Arezoo;

Direct reduced iron (DRI) and hot briquetted iron (HBI) are essential feedstocks for tramp element control in the electric arc furnace (EAF). Due to greenhouse gas (GHG) concerns related to CO2 emissions, hydrogen as a substitute for natural gas and a reductant in DRI production is being widely explored to reduce GHG emissions in ironmaking. This study examines the melting behavior of hydrogen DRI (H-DRI) pellets in the EAF containing low-carbon (0.1 wt.%) molten steel and molten slag. A computational heat transfer model was developed to predict the melting behavior of H-DRI pellets. To validate the model, a set of experimental laboratory simulations was conducted by immersing H-DRI in a molten steel bath and slag. The temperature history at the center of the pellet during melting and the shell thickness at different melting stages were utilized to validate the model. The simulation results agree with the experimental measurements of steel balls and H-DRI in different metallic molten steel and slag baths.

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Research Organization:: Univ. of Missouri, Columbia, MO (United States)

Sponsoring Organization:: USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: EE0009250

OSTI ID:: 2403571

Alternate ID(s):: OSTI ID: 2580316

Journal Information:: Metals, Journal Name: Metals Journal Issue: 7 Vol. 14; ISSN MBSEC7; ISSN 2075-4701

Publisher:: MDPI AGCopyright Statement

Country of Publication:: Switzerland

Language:: English

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