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Upgrading copper slag cleaning tailings for re-use

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Holland, Keiran
dc.contributor.author Eriç, R. Hürman
dc.contributor.author Taskinen, Pekka
dc.contributor.author Jokilaakso, Ari
dc.date.accessioned 2019-03-05T10:15:20Z
dc.date.available 2019-03-05T10:15:20Z
dc.date.issued 2019-03-15
dc.identifier.citation Holland , K , Eriç , R H , Taskinen , P & Jokilaakso , A 2019 , ' Upgrading copper slag cleaning tailings for re-use ' , Minerals Engineering , vol. 133 , pp. 35-42 . https://doi.org/10.1016/j.mineng.2018.12.026 en
dc.identifier.issn 0892-6875
dc.identifier.issn 1872-9444
dc.identifier.other PURE UUID: 9dec6f4f-5792-489f-88e1-5771f31fa450
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/9dec6f4f-5792-489f-88e1-5771f31fa450
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85059801211&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/32276756/CHEM_Holland_et_al_Pre_reduction_of_copper_slag_cleaning_tailings_2019_Minerals_Engineering.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/37025
dc.description.abstract Tailings from an industrial copper slag cleaning milling and flotation circuit have been pre-reduced at low temperatures, well below its melting point, using CH4-H2-Ar mixtures with the aim of metallizing its iron oxide component to metallic iron. The treatment carried out at 700–900 °C, with a duration of up to 90 min, indicated a complete transformation of magnetite within the first 30 min of the process. At the same time, significant fractions of its harmful impurities, antimony, arsenic, bismuth, lead and zinc, present as oxides in the slag were reduced from magnetite and the glassy inter-granular phase, and removed from the slag as flue dust in the process off-gas. The obtained fine slag powder with low impurity contents can be melted after the pre-reduction to synthetic rock or to fast cooled slag granules for further use. en
dc.format.extent 8
dc.format.extent 35-42
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Minerals Engineering en
dc.relation.ispartofseries Volume 133 en
dc.rights openAccess en
dc.title Upgrading copper slag cleaning tailings for re-use en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Aalto University
dc.contributor.department Department of Chemical and Metallurgical Engineering en
dc.subject.keyword Hydrocarbons
dc.subject.keyword Reduction kinetics
dc.subject.keyword Slag utilization
dc.subject.keyword Smelting
dc.subject.keyword Volatilization
dc.identifier.urn URN:NBN:fi:aalto-201903052171
dc.identifier.doi 10.1016/j.mineng.2018.12.026
dc.date.embargo info:eu-repo/date/embargoEnd/2021-01-11

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