Weathering Behavior of Newly Developed Highly Fluxed DRI

Dishwar, RK and Agrawal, S and Sinha, OP (2021) Weathering Behavior of Newly Developed Highly Fluxed DRI. In: Journal of Sustainable Metallurgy .

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Abstract

Abstract: The weathering behavior of highly fluxed and reduced iron ore pellet (DRI-Direct Reduced Iron) having 4, 6, and 8 basicity and 65�98 R (R-reduction) are given in this paper. The primary objective has been to solve weathering issues related to DRI and fresh lime used in the secondary steelmaking process. Experimental studies indicated that the addition of lime during pellet making and its subsequent reduction in coal bed yielded weather-resistant fluxed DRI with lime present in combined state. Such fluxed DRI exposed to 10 days open air (85 humidity) resulted in only 2 wt moisture adsorption. The 30 days of air exposure caused 6 wt moisture adsorption within acceptable limits for industrial acceptance. This low moisture adsorption by fluxed DRI was perhaps due to the presence of lime in combined form. Graphical Abstract: Figure not available: see fulltext. © 2021, The Minerals, Metals & Materials Society.

Item Type:	Journal Article
Publication:	Journal of Sustainable Metallurgy
Publisher:	Springer Science and Business Media Deutschland GmbH
Additional Information:	The copyright for this article belongs to Springer Science and Business Media Deutschland GmbH
Keywords:	Adsorption; Coal deposits; Economic geology; Iron ores; Lime; Moisture; Pelletizing; Weathering, Addition of lime; Direct-reduced irons; Industrial acceptance; Moisture adsorption; Primary objective; Secondary steelmaking; Subsequent reduction; Weathering behavior, Iron ore reduction
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	29 Mar 2021 05:03
Last Modified:	29 Mar 2021 05:03
URI:	http://eprints.iisc.ac.in/id/eprint/68603

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