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    Author(s): John H. Klungness; Roland L. Gleisner; Marguerite S. Sykes
    Date: 2002
    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: [7] pages.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (143 KB)

    Description

    Colloidal 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.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Klungness, 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: [7] pages.

    Keywords

    Adhesives, calcium carbonate, contaminants, filler, stickies, stock preparation, recovered papers, recycling

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