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Production of pulps with an extremely high fines content for use as strength agent
RISE - Research Institutes of Sweden, Bioeconomy, Papermaking and Packaging.ORCID iD: 0000-0003-0385-6202
RISE - Research Institutes of Sweden, Bioeconomy, Papermaking and Packaging.
Holmen AB, Sweden.
2018 (English)In: PaperCon 2018: Shaping the future through innovation, TAPPI , 2018, article id PA5.1Conference paper, Published paper (Refereed)
Abstract [en]

The objective was to optimize the production of fines-enriched pulp (FE-pulp) from chemical pulp.The first trial was a continuous production of FE-pulp with unbleached and bleached never-dried softwood. Thepulp was refined using a JC00 equipped with SF filling, and screened with a micro-perforated screen basket with250 μm diameter holes, but the produced FE-pulp got low concentration, below 3 g/l.The second trial aimed at optimised conditions, using dried bleached softwood. Three fillings, microbar, AA andFF were evaluated in a JC01 refiner, where microbar was most energy efficient. Microbar and AA reachedtargeted FE-pulp concentration, 10 g/l. The refined pulps were screened with different hole diameters, where, asexpected, larger hole diameters resulted in higher concentration but also lower fines content in the FE-pulps.The last trial, the microbar filling was evaluated for never-dried softwood pulp, unbleached and bleached. Now,the refining of unbleached softwood gave 3 times more fines per kWh/ton compared with first trial.These trials demonstrated the importance of the right refining conditions regarding effect of refiner and type offilling to achieve glue-pulp with high enough fines content. With the right conditions, it was possible to produceFE-pulp with high concentration at moderate energy consumption.

Place, publisher, year, edition, pages
TAPPI , 2018. article id PA5.1
Keywords [en]
pulping, pulp, fines, strength agent, fines-enriched pulp, softwood, screening, refining, energy consumption
National Category
Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:ri:diva-35390Scopus ID: 2-s2.0-85060390536ISBN: 978-1-59510-268-3 (print)OAI: oai:DiVA.org:ri-35390DiVA, id: diva2:1256116
Conference
PaperCon 2018, April 15-18, Charlotte, NC, USA
Available from: 2018-10-16 Created: 2018-10-16 Last updated: 2019-03-19Bibliographically approved

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Björk, Elisabeth

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Total: 51 hits
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