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dc.contributor.authorCanaguier, Vincent Yves
dc.contributor.authorTangstad, Merete
dc.date.accessioned2022-04-29T07:28:39Z
dc.date.available2022-04-29T07:28:39Z
dc.date.created2021-11-11T15:02:08Z
dc.date.issued2021
dc.identifier.citationProcesses. 2021, 9 (11), 2020, 18.en_US
dc.identifier.issn2227-9717
dc.identifier.urihttps://hdl.handle.net/11250/2993320
dc.description.abstractThe carbothermic reduction of slag in silicomanganese production is accompanied by the release of carbon monoxide. This gas can accumulate as bubbles within the slag, leading to foaming and, potentially, disturbances to furnace operation. This study investigated the reduction in the slag together with its foaming using a sessile drop furnace. Five silicomanganese slags produced from industrial raw materials (Assmang ore, Comilog ore, high-carbon FeMn slag with quartz, and FeS additions) were reduced by a graphite substrate at isothermal conditions (i.e., 1540–1660 °C) under CO atmosphere. The reduction reaction was tracked by photographing the slag droplet, and the cyclic expansion and burst of the droplet were used to estimate the gas evolution. The reacted samples were analyzed by wavelength-dispersive X-ray spectroscopy (WDS) to determine MnO and SiO2 reduction. While no foaming was observed using Comilog ore, extensive retention of CO in the slag phase was observed when using Assmang ore or Assmang with high-carbon FeMn slag. The beginning of foaming was attributed to an increase in the reaction rate; the absence of foaming when using Comilog can be attributed to the acidity of the charge. Addition of sulfur to the Comilog-based charge did not influence the reduction.en_US
dc.language.isoengen_US
dc.publisherMDPIen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectsessile drop techniqueen_US
dc.subjectferroalloysen_US
dc.subjectsilicomanganeseen_US
dc.subjectslag foamingen_US
dc.subjectmetallurgyen_US
dc.titleIn situ observation of the carbothermic reduction and foaming of slags in silicomanganese productionen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).en_US
dc.source.pagenumber18en_US
dc.source.volume9en_US
dc.source.journalProcessesen_US
dc.source.issue11en_US
dc.identifier.doi10.3390/pr9112020
dc.identifier.cristin1953757
dc.relation.projectNorges forskningsråd: 237738en_US
dc.source.articlenumber2020en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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