A fundamental study considering specific ion effects on the attachment of sulfide minerals to air bubbles

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorOctober, L. L.en_US
dc.contributor.authorCorin, K. C.en_US
dc.contributor.authorManono, M. S.en_US
dc.contributor.authorSchreithofer, N.en_US
dc.contributor.authorWiese, J. G.en_US
dc.contributor.departmentDepartment of Bioproducts and Biosystemsen
dc.contributor.groupauthorClean Technologiesen
dc.contributor.organizationUniversity of Cape Townen_US
dc.date.accessioned2020-06-25T08:43:01Z
dc.date.available2020-06-25T08:43:01Z
dc.date.issued2020-06-01en_US
dc.description| openaire: EC/H2020/730480/EU//ITERAMS
dc.description.abstractBubble-particle attachment is one of the most fundamental sub-processes in froth flotation. It is of critical importance in achieving the separation of value from non-value. This sub-process is affected by many factors such as the chemistry of the pulp, action of the reagents, hydrodynamics and operational factors. Understanding the effects of these factors on bubble-particle attachment is thus crucial as they may in turn affect the mineral recoveries attained. With the current drive towards zero effluent discharge on mineral concentrators water quality is an important factor to understand as it can change the pulp chemistry and subsequently affect mineral recoveries. This study thus considers the effect of specific ions found in process water on the bubble-particle attachment of chalcopyrite and galena. Adsorption studies and zeta potential measurements were conducted to interpret the outcomes of the bubble-particle attachment tests. Pulps containing Ca2+ resulted in lower bubble-particle attachment probability and recovery of galena and chalcopyrite. Adsorption studies complemented the bubble-particle attachment findings well and showed that in Ca2+ containing waters, less xanthate was adsorbed on both the chalcopyrite and galena surfaces. The zeta potential measurements showed an increase in mineral potential with Ca2+ containing salts compared to the very negative mineral potential in NaNO3. This work provides evidence of the passivation of the mineral surface with Ca2+; which hindered the adsorption of xanthate on the mineral surface in Ca2+ containing solutions and subsequently resulted in poor bubble-particle attachment.en
dc.description.versionPeer revieweden
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationOctober, L L, Corin, K C, Manono, M S, Schreithofer, N & Wiese, J G 2020, ' A fundamental study considering specific ion effects on the attachment of sulfide minerals to air bubbles ', Minerals Engineering, vol. 151, 106313 . https://doi.org/10.1016/j.mineng.2020.106313en
dc.identifier.doi10.1016/j.mineng.2020.106313en_US
dc.identifier.issn0892-6875
dc.identifier.issn1872-9444
dc.identifier.otherPURE UUID: d60b3c90-3732-48ab-90b7-05981446c749en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/d60b3c90-3732-48ab-90b7-05981446c749en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85081929805&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/43434359/1_s2.0_S0892687520301333_main.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/45223
dc.identifier.urnURN:NBN:fi:aalto-202006254180
dc.language.isoenen
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/730480/EU//ITERAMSen_US
dc.relation.ispartofseriesMinerals Engineeringen
dc.relation.ispartofseriesVolume 151en
dc.rightsopenAccessen
dc.subject.keywordBubble-particle attachmenten_US
dc.subject.keywordChalcopyriteen_US
dc.subject.keywordFroth Flotationen_US
dc.subject.keywordGalenaen_US
dc.subject.keywordSpecific ionsen_US
dc.subject.keywordWater qualityen_US
dc.titleA fundamental study considering specific ion effects on the attachment of sulfide minerals to air bubblesen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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