The effect of flotation cell shape on deinking behaviour

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dc.contributor.authorJones, Lewis
dc.contributor.authorWalmsley, Michael R.W.
dc.coverage.spatialConference held at Hobart, Australiaen_NZ
dc.date.accessioned2010-10-20T22:44:47Z
dc.date.available2010-10-20T22:44:47Z
dc.date.issued2001
dc.description.abstractStudies were undertaken to investigate the deinking behaviour of different shaped deinking cells of the same volume. For comparative purposes, most oprational variables were kept constant, and the same injector was used throughout the study. The position of the injector, however, was varied in some cases to go along with the particular cell shape being studied. Three types of cell shapes were studied, (1) cylindrical with tangential air injection, (2) rectanular with vertical injection, and (3) rectangular with horizontal injection. Eucalyptus/toner slurries and news/mag wastepaper slurries were deinked. Flow patterns in the cells and the corresponding deinking efficiencies were measured. It was found that strong and excessive re-circulatory flows within the cells could under certain conditions be a major factor in reducing brightness lift. Vertical injection into a rectangular cell gave stable flow patterns, non-wavy froth removal and sustained brightness lift for a wide range of feed and airflow rates. Horizontal injection into a similar rectangular shaped cell exhibited quite different characteristics. High brightness lift was possible for certain conditions and not for others. Wavy froth and excessive recirculation flow patterns varied with feed and airflow. The cylindrical cell with tangential injection gave stable circulatory flow and stable froth removal at low flow rates but was unable to deink at high flows.en_NZ
dc.format.mimetypeapplication/pdf
dc.identifier.citationJones, L. & Walmsley, M. (2001). The effect of flotation cell shape on deinking behaviour. In Proceedings of 55th Appita Annual Conference, Hobart, Australia 30 April-2 May 2001 (pp. 66-73). Carlton, Australia: Appita.en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/4711
dc.language.isoen
dc.publisherAppita Incen_NZ
dc.relation.isPartOf55th Appita Annual Conferenceen_NZ
dc.relation.urihttp://www.appita.com.au/en_NZ
dc.rightsThis article has been published in Proceedings of 55th Appita Annual Conference, Hobart, Australia 30 April-2 May 2001. Used with permission.en_NZ
dc.subjectengineeringen_NZ
dc.titleThe effect of flotation cell shape on deinking behaviouren_NZ
dc.typeConference Contributionen_NZ
pubs.begin-page73en_NZ
pubs.elements-id26701
pubs.end-page80en_NZ
pubs.finish-date2001-05-02en_NZ
pubs.start-date2001-04-30en_NZ
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