Low-consistency refining of mechanical pulp in the light of forces on fibres

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Fältnamn	Indikatorer	Metadata
000		02976naa a2200421 4500
001		oai:DiVA.org:miun-25656
003		SwePub
008		150818s2015 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-256562 URI
024	7	a https://doi.org/10.3183/NPPRJ-2015-30-02-p225-2292 DOI
040		a (SwePub)miun
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Berg, Jan-Eriku Mittuniversitetet,Avdelningen för kemiteknik,FSCN4 aut0 (Swepub:miun)berjan
245	1 0	a Low-consistency refining of mechanical pulp in the light of forces on fibres
264	1	c 2015
338		a electronic2 rdacarrier
520		a The aim of this investigation was to find new approaches to evaluate the performance of low-consistency refiners. Data from a paper mill producing TMP from Norway spruce was used in order to find a possible way to calculate the power split between the zones in a TwinFlo refiner. An assumption of equal amount of fibres captured between overlapping bars was found successful in order to develop equations for the power split. The equations predicted equal power in both zones at equal disc gaps. The power was found to increase approximately linearly with decreasing disc gap over the range, 0.1-0.2 mm. The power split was essential to know for calculating refining intensities expressed as specific edge load and forces on fibres in the two zones. The reduction in fibre length was about 5% at 0.17 mm disc gap or at 0.03 N forces on fibres or at 0.7 J/m specific edge load. Disc gap, forces on fibres and specific edge load was found to predict fibre shortening approximately equally upon changes in power and flow rate through the refiner.
650	7	a TEKNIK OCH TEKNOLOGIERx Kemiteknik0 (SwePub)2042 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Chemical Engineering0 (SwePub)2042 hsv//eng
653		a Low consistency
653		a Two-zoned refiners
653		a Fibre length
653		a Refining intensity
653		a Disc gap
653		a Specific edge load
653		a Forces on fibres
653		a Thermomechanical pulping
700	1	a Sandberg, Christeru Braviken Paper Mill, Holmen Paper, SE-60188 Norrkoping, Sweden4 aut0 (Swepub:miun)chrsan
700	1	a Engberg, Birgitta A.u Mittuniversitetet,Avdelningen för kemiteknik,FSCN4 aut0 (Swepub:miun)birsve
700	1	a Engstrand, Peru Mittuniversitetet,Avdelningen för kemiteknik,FSCN4 aut0 (Swepub:miun)pereng
710	2	a Mittuniversitetetb Avdelningen för kemiteknik4 org
773	0	t Nordic Pulp & Paper Research Journalg 30:2, s. 225-229q 30:2<225-229x 0283-2631x 2000-0669
856	4	u https://miun.diva-portal.org/smash/get/diva2:849389/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-25656
856	4 8	u https://doi.org/10.3183/NPPRJ-2015-30-02-p225-229

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Av författaren/redakt...: Berg, Jan-Erik; Sandberg, Christ ...; Engberg, Birgitt ...; Engstrand, Per

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