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dc.contributor.authorLarssen, Trine Asklund
dc.contributor.authorTangstad, Merete
dc.contributor.authorKero, Ida
dc.date.accessioned2019-12-18T07:02:45Z
dc.date.available2019-12-18T07:02:45Z
dc.date.created2019-05-14T15:26:38Z
dc.date.issued2018
dc.identifier.citationThe Minerals, Metals & Materials Series. 2018, 1093-1101.nb_NO
dc.identifier.isbn978-3-319-95021-1
dc.identifier.urihttp://hdl.handle.net/11250/2633768
dc.description.abstractThe efficiency in production of manganese ferroalloys is dependent on the gaseous reduction of the higher manganese oxides in the ores used as raw materials. The materials, descending in the furnace, will meet the furnace gas that contains significant amounts of CO(g) and reduce in subsequent steps, the last step being reduction of Mn3O4 to MnO. This step may to varying extent occur at temperatures exceeding 800 °C, i.e. in the active region of the Boudouard reaction. The gas reduction of Assmang and Comilog manganese ores were investigated in CO-CO2-atmosphere at temperatures up to 1000 °C. It was seen that decreasing ore size correlates to a lower reduction temperature and increasing reduction rate. Similar effect was observed with increasing CO-content in the gas atmosphere. Further, it was found that Comilog ore obtained a complete prereduction at 600 °C, whereas reduction of Assmang ore was not complete at 800 °C for the majority of the experiments.nb_NO
dc.language.isoengnb_NO
dc.publisherSpringernb_NO
dc.relation.ispartofExtraction 2018- Proceedings of the First Global Conference on Extractive Metallurgy
dc.titleGaseous reduction of Mn ores in CO-CO2 atmospherenb_NO
dc.typeChapternb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber1093-1101nb_NO
dc.identifier.doi10.1007/978-3-319-95022-8_88
dc.identifier.cristin1697837
dc.relation.projectNorges forskningsråd: 257632nb_NO
dc.description.localcodeThis is a post-peer-review, pre-copyedit version of a chapter published in Extraction 2018. Locked until 19 August 2020 due to copyright restrictions. The final authenticated version is available online at: https://doi.org/10.1007/978-3-319-95022-8_88nb_NO
cristin.unitcode194,66,35,0
cristin.unitnameInstitutt for materialteknologi
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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