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Floatability of model offset ink particles
YKI – Ytkemiska institutet.
1999 (English)In: Appita journal, ISSN 1038-6807, Vol. 52, 38-40 p.Article in journal (Refereed)
Abstract [en]

Model studies on the floatability of an offset ink suspension (without fibres) have been performed using a Hallimond tube and a standard calcium chloride- sodium oleate collector system. The average ink particle size was 1 µm indicating a poor floatability of untreated primary ink particles. This suspension was mixed with deinking chemicals, coating components and dissolved paper chemicals in order to evaluate their effect on flotation performance. The results were combined with data on agglomeration kinetics to determine important factors of the flotation deinking process. The importance of agglomeration was confirmed. The particles remaining after flotation were discrete primary ink particles. An interesting result was that no upper particle size limit for flotation was observed when ink particles was flotated without fibres, although particles larger than 200 µm were present indicating the effect of a fibre network for retention of large particles. Parameters that influence the agglomeration and flotation rate are discussed as well as reasons why some particles do not agglomerate and flotate.

Place, publisher, year, edition, pages
1999. Vol. 52, 38-40 p.
Keyword [en]
Agglomeration, deinking, fatty acid, flotation, Hallimond tube, offset inks
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-26301OAI: oai:DiVA.org:ri-26301DiVA: diva2:1053303
Note
A1144Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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