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Micro and colloidal stickie pacification with precipitated calcium carbonateAuthor(s): John H. Klungness; Roland L. Gleisner; Marguerite S. Sykes
Source: 7th Recycling Technology Conference : Pacification of Stickies by Fibre Loading ... Brussels, Belgium, Thursday 14th & Friday 15 February 2002. Leatherhead, U.K. : Pira International, 2002:  pages.
Publication Series: Miscellaneous Publication
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DescriptionColloidal stickies that build up in mill process water during pulping are problematic and difficult to remove. We examined precipitated calcium carbonate (PCC) as a means to ameliorate process water stickies. The effectiveness of PCC added directly into a slurry of deinked pulp was compared with in situ precipitation of PCC by the fiber loading method. We found that without retention aids, fiber loaded PCC resulted in the greatest attraction of colloidal stickies to pulp following high- consistency refining required for fiber loading. Also, without retention aids, fiber loaded PCC was the most effective in masking stickies in handsheets. But under the conditions we used, PCC either added directly or fiber loaded was no more effective than retention aids in removing colloidal stickies from mill water.
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CitationKlungness, John H.; Gleisner, Roland L.; Sykes, Marguerite S. 2002. Micro and colloidal stickie pacification with precipitated calcium carbonate. 7th Recycling Technology Conference : Pacification of Stickies by Fibre Loading ... Brussels, Belgium, Thursday 14th & Friday 15 February 2002. Leatherhead, U.K. : Pira International, 2002:  pages.
KeywordsAdhesives, calcium carbonate, contaminants, filler, stickies, stock preparation, recovered papers, recycling
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