Automated contact time apparatus and measurement procedure for bubble-particle interaction analysis

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorAspiala, M.en_US
dc.contributor.authorSchreithofer, N.en_US
dc.contributor.authorSerna-Guerrero, R.en_US
dc.contributor.departmentDepartment of Chemical and Metallurgical Engineeringen
dc.contributor.groupauthorMineral Processing and Recyclingen
dc.date.accessioned2019-03-05T10:16:00Z
dc.date.available2019-03-05T10:16:00Z
dc.date.embargoinfo:eu-repo/date/embargoEnd/2020-03-02en_US
dc.date.issued2018-06-01en_US
dc.description.abstractThe novel Automated Contact Time Apparatus (ACTA) presented in this paper serves as a diagnostic tool that allows the detection of changes in bubble-particle attachment probability and therefore floatability caused by alterations in the chemical environment and particle properties. The apparatus consists of six identical capillaries where bubbles with defined size are produced simultaneously in a measurement chamber. The bubbles at the needle tips are placed in contact with the submerged particle bed for specific time periods, controlled with the help of automatic actuators. The advantage of the instrument is that hundreds of bubble-particle contacts can be measured automatically within a short time period. Microscopy pictures of each measured bubble are taken while recording the movement of the bubble before, during and after contact with the solid particles. The recorded pictures can be used to determine the actual bubble size and its corresponding deviation, and to detect the attachment of particles. The attached particles are collected in a detachable chamber for subsequent characterization. Furthermore, the device is portable and can be taken to the mineral processing plants for quick evaluation of particle-bubble attachment efficiency with particles and process water sampled directly from real processes.en
dc.description.versionPeer revieweden
dc.format.extent6
dc.format.extent77-82
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationAspiala, M, Schreithofer, N & Serna-Guerrero, R 2018, ' Automated contact time apparatus and measurement procedure for bubble-particle interaction analysis ', Minerals Engineering, vol. 121, pp. 77-82 . https://doi.org/10.1016/j.mineng.2018.02.018en
dc.identifier.doi10.1016/j.mineng.2018.02.018en_US
dc.identifier.issn0892-6875
dc.identifier.issn1872-9444
dc.identifier.otherPURE UUID: ed142e44-ba1d-4127-8520-80d63af13e17en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/ed142e44-ba1d-4127-8520-80d63af13e17en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85043975156&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/32213970/CHEM_Aspiala_et_al_Automated_contact_2018_Minerals_Engineering.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/37039
dc.identifier.urnURN:NBN:fi:aalto-201903052185
dc.language.isoenen
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartofseriesMinerals Engineeringen
dc.relation.ispartofseriesVolume 121en
dc.rightsopenAccessen
dc.subject.keywordBubble-particle inductionen_US
dc.subject.keywordFlotationen_US
dc.subject.keywordInduction timeen_US
dc.subject.keywordStatistical analysisen_US
dc.titleAutomated contact time apparatus and measurement procedure for bubble-particle interaction analysisen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
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