Characterization and Reduction Behavior of Cold-Bonded Composite Pellets for Direct Reduction Using an Organic Binder

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dc.authoridAHLATCI, Hayrettin/0000-0002-6766-4974
dc.contributor.authorCevik, E.
dc.contributor.authorAhlatci, H.
dc.contributor.authorSun, Y.
dc.date.accessioned2024-09-29T15:51:23Z
dc.date.available2024-09-29T15:51:23Z
dc.date.issued2013
dc.departmentKarabük Üniversitesien_US
dc.description.abstractThe purpose of this study was to investigate the reduction behavior of cold-bonded composite pellets produced from low-grade hematite iron ore using molasses solution at various concentrations, as well as their physical and chemical properties. Direct-Reduction Iron (DRI) technology makes it possible to assess low-grade iron ores and convert them into scrap at facilities that have electric arc furnaces. The reductant used was coke with fixed carbon of 86.04%. The alkalinity rate was adjusted to 0.7 by adding calcium carbonate. In the composite pellets produced, the 300 N/pellet compression strength recommended in the literature was achieved with a Fe-tot/C-fix ratio of 2.5 and 3 using a 50% concentrated molasses solution. Composite pellets prepared with a Fe-tot/C-fix ratio of 3.5 using a 40% concentrated molasses solution reached a compression strength of 496 N/pellet. The porosity is inversely proportional to the increase in compression strength and binder concentration. Reduction experiments were conducted by applying different temperatures and durations to samples possessing optimum conditions for each Fe-tot/C-fix ratio: the best result was achieved with a 88% reduction rate in composite pellets with a Fe-tot/C-fix ratio of 3.5 at the end of 1 h. Pig iron nuggets were characterized using an optical microscopy (LOM) and a scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS).en_US
dc.identifier.doi10.1007/s11015-013-9757-2
dc.identifier.endpage477en_US
dc.identifier.issn0026-0894
dc.identifier.issn1573-8892
dc.identifier.issue5-6en_US
dc.identifier.scopus2-s2.0-84885455540en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage468en_US
dc.identifier.urihttps://doi.org/10.1007/s11015-013-9757-2
dc.identifier.urihttps://hdl.handle.net/20.500.14619/4023
dc.identifier.volume57en_US
dc.identifier.wosWOS:000325076800016en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofMetallurgisten_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectcomposite pelletsen_US
dc.subjectcompressive strengthen_US
dc.subjectporosityen_US
dc.subjectreductionen_US
dc.titleCharacterization and Reduction Behavior of Cold-Bonded Composite Pellets for Direct Reduction Using an Organic Binderen_US
dc.typeArticleen_US

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