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dc.contributor.authorRingdalen, Eli
dc.contributor.authorGaal, S.
dc.contributor.authorTangstad, Merete
dc.contributor.authorOstrovski, Oleg
dc.identifier.citationMetallurgical and materials transactions. B, process metallurgy and materials processing science. 2010, 41 (6), 1220-1229.en_US
dc.description.abstractThe charge for silicomangansese production consists of manganese ore (often mixed with ferromanganese slag) dolomite or calcite, quartz, and in some cases, other additions. These materials have different melting properties, which have a strong effect on reduction and smelting reactions in the production of a silicomanganese alloy. This article discusses properties of Assman, Gabonese, and Companhia Vale do Rio Doce (CVRD) ores, CVRD sinter and high-carbon ferromanganese (HC FeMn) slag, and their change during silicomanganese production. The melting and reduction temperatures of these manganese sources were measured in a carbon monoxide atmosphere, using the sessile drop method and a differential thermal analysis/thermogravimetric analysis. Equilibrium phases were analyzed using FACTSage (CRCT, Montreal, Canada and GTT, Aachen, Germany) software. Experimental investigations and an analysis of equilibrium phases revealed significant differences in the melting behavior and reduction of different manganese sources. The difference in smelting of CVRD ore and CVRD sinter was attributed to a faster reduction of sinter by the graphite substrate and carbon monoxide. The calculation of equilibrium phases in the reduction process of manganese ores using FACTSage correctly reflects the trends in the production of manganese alloys. The temperature at which the manganese oxide concentration in the slag was reduced below 10 wt pct can be assigned to the top of the coke bed in the silicomanganese furnace. This temperature was in the range 1823 K to 1883 K (1550 °C to 1610 °C).en_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleOre melting and reduction in silicomanganese productionen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holderThe Author(s) 2010. This article is published with open access at Springerlink.comen_US
dc.source.journalMetallurgical and materials transactions. B, process metallurgy and materials processing scienceen_US
dc.relation.projectNorges forskningsråd: 182617en_US
cristin.unitnameProsessmetallurgi og råmateriale
cristin.unitnameStiftelsen SINTEF

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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal