Timmerfors, Jessica Gard and Salehi Kahrizsangi, Hamid and Larsson, Sylvia and Sjölund, Torbjörn and Jonsson, Leif J.
(2021).
The impact of using different wood qualities and wood species on chips produced using a novel type of pilot drum chipper.
Nordic Pulp and Paper Research Journal. 36
, 214-226
[Research article]
![]() |
PDF
860kB |
Abstract
Resource-efficient wood chipping for forest-industrial processes demands large fractions of accept chips and small fractions of small-sized material, such as pin chips and fines. In Kraft pulping, a narrow distribution of wood chip thickness is important for even impregnation and for making high-quality pulp. Using newly developed forest-industrial drum-chipping technology, the investigation covered wood of varying moisture content, frozen versus unfrozen wood, and the use of different wood species. Using conventional techniques for analyzing wood chip dimensions, fast-grown spruce wood with high moisture content gave 4.2% pin chips and fines, which was less than half of the fractions obtained with spruce wood with lower moisture content. A comparison between frozen and unfrozen pine resulted in slightly thinner and shorter chips for the frozen wood, but in both cases accept yields of up to similar to 85% were achieved. A comparison of different tree species (aspen, birch, pine, and spruce) resulted in larger accept fractions (similar to 90%) for the hardwood species, even though the average length of these wood chips was as low as 17 mm. The results provide a first indication of how basic wood log properties affect the yields of accept chips and small-sized material when using modern industrial drum-chipping technology.
Authors/Creators: | Timmerfors, Jessica Gard and Salehi Kahrizsangi, Hamid and Larsson, Sylvia and Sjölund, Torbjörn and Jonsson, Leif J. | ||||||
---|---|---|---|---|---|---|---|
Title: | The impact of using different wood qualities and wood species on chips produced using a novel type of pilot drum chipper | ||||||
Series Name/Journal: | Nordic Pulp and Paper Research Journal | ||||||
Year of publishing : | 2021 | ||||||
Volume: | 36 | ||||||
Page range: | 214-226 | ||||||
Number of Pages: | 13 | ||||||
Publisher: | WALTER DE GRUYTER GMBH | ||||||
ISSN: | 0283-2631 | ||||||
Language: | English | ||||||
Publication Type: | Research article | ||||||
Article category: | Scientific peer reviewed | ||||||
Version: | Published version | ||||||
Copyright: | Creative Commons: Attribution 4.0 | ||||||
Full Text Status: | Public | ||||||
Subjects: | (A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Wood Science | ||||||
Keywords: | drum chipper, frozen wood, moisture content, tree species, wood chips | ||||||
URN:NBN: | urn:nbn:se:slu:epsilon-p-112786 | ||||||
Permanent URL: | http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-112786 | ||||||
Additional ID: |
| ||||||
ID Code: | 24862 | ||||||
Faculty: | S - Faculty of Forest Sciences | ||||||
Department: | (S) > Department of Forest Biomaterials and Technology | ||||||
Deposited By: | SLUpub Connector | ||||||
Deposited On: | 14 Jul 2021 13:25 | ||||||
Metadata Last Modified: | 14 Jul 2021 13:31 |
Repository Staff Only: item control page