Sulfuric acid leaching for capturing value from copper rich converter slag

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorKhalid, Muhammaden_US
dc.contributor.authorHamuyuni, Josephen_US
dc.contributor.authorAgarwal, Viveken_US
dc.contributor.authorPihlasalo, Jounien_US
dc.contributor.authorHaapalainen, Mikaen_US
dc.contributor.authorLundström, Marien_US
dc.contributor.departmentDepartment of Chemical and Metallurgical Engineeringen
dc.contributor.groupauthorHydrometallurgy and Corrosionen
dc.contributor.organizationOutotec Research Centeren_US
dc.date.accessioned2019-10-01T12:07:15Z
dc.date.available2019-10-01T12:07:15Z
dc.date.issued2019-04-01en_US
dc.description.abstractIn this research, a hydrometallurgical method for recovery of copper from copper rich converter slag is investigated. The main copper containing phases of the slag are cuprite (Cu2O), delafossite (CuFeO2) and metallic copper (Cu). The study investigates the effect of particle size, temperature, acid concentration, agitation and leaching time under oxidizing conditions. The results showed that at optimized conditions (40 °C, 2 M H2SO4, 60 min leaching time, 0.26 kW/m3 mixing power, and 2000 mL/min oxygen flow rate), ca. 100% extraction of copper from slag into the solution was obtained. X-ray diffraction (XRD) analysis consolidated the experimental results by confirming that no Cu containing phases were present in the leach residue. Results also showed that temperature ≤40 °C had the larger influence on Cu and Fe yield, whereas higher temperature (>40 °C) favored Ni and Zn dissolution. The acid consumption of the optimized leaching process was found to be 23.7 mol of H2SO4 per kg of copper.en
dc.description.versionPeer revieweden
dc.format.extent9
dc.format.extent1005-1013
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationKhalid, M, Hamuyuni, J, Agarwal, V, Pihlasalo, J, Haapalainen, M & Lundström, M 2019, ' Sulfuric acid leaching for capturing value from copper rich converter slag ', Journal of Cleaner Production, vol. 215, pp. 1005-1013 . https://doi.org/10.1016/j.jclepro.2019.01.083en
dc.identifier.doi10.1016/j.jclepro.2019.01.083en_US
dc.identifier.issn0959-6526
dc.identifier.issn1879-1786
dc.identifier.otherPURE UUID: 34896d9d-f13a-443a-a30e-4cea7b606e3ben_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/34896d9d-f13a-443a-a30e-4cea7b606e3ben_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85060245113&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/37224029/CHEM_Khalid_et_al_Sulfuric_acid_2019_JourCleProd.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/40529
dc.identifier.urnURN:NBN:fi:aalto-201910015549
dc.language.isoenen
dc.publisherELSEVIER SCI LTD
dc.relation.ispartofseriesJournal of Cleaner Productionen
dc.relation.ispartofseriesVolume 215en
dc.rightsopenAccessen
dc.subject.keywordCircular economyen_US
dc.subject.keywordCopper recoveryen_US
dc.subject.keywordCopper rich slagen_US
dc.subject.keywordLeachingen_US
dc.subject.keywordSide streamsen_US
dc.subject.keywordLOSSESen_US
dc.subject.keywordRECOVERYen_US
dc.subject.keywordREMOVALen_US
dc.subject.keywordIRONen_US
dc.titleSulfuric acid leaching for capturing value from copper rich converter slagen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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[article-cris] Kemian tekniikan korkeakoulu / CHEM