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Ekström, Axel, 2012. Kartläggning av spånprodukter vid Sävar såg. Second cycle, A2E. Umeå: SLU, Dept. of Forest Resource Management

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Abstract

A change towards using more biofuels than fossil fuels is taking place in Sweden, and in many other parts of the world. This makes the use of fuel pellets increasingly popular, causing a greater demand for sawmill sawdust products. There is a trend towards the use of multiple types of shredders, instead of a single type in each sawmill. The purpose of the study was to characterize the different flows of saw particles that can be found at Sävar såg when cutting thick or thin wood with different cutting techniques. The saw particles size, shape, moisture content and heat value were analysed by the cutting stations: first cutting fast and slow, second cutting fast and slow, grading fast and slow and planning. The results confirmed the differences in the saw particles characters with regard to particle size, shape and moisture content. There were marginal differences in heating value. Saw particles from first cutting and planning differs from each other based on the characters size, shape and moisture content. Saw particles from the first cutting and the second cutting gave the thickest fractions. The finest saw particles are produced at the grading. There were rather small differences in particle derived from thick and thin timber if fractional distribution, moisture content and form are observed. The feed rate provides differences in fractionation distribution and shape of the saw particles. The results of this study thereby show that it would be possible to assort the saw particles by its characteristics based on the characteristics they have received according to the cutting station they originated from.

Main title:Kartläggning av spånprodukter vid Sävar såg
Authors:Ekström, Axel
Supervisor:Wästerlund, Iwan
Examiner:Finell, Michael
Series:Arbetsrapport / Sveriges lantbruksuniversitet, Institutionen för skoglig resurshushållning
Volume/Sequential designation:356
Year of Publication:2012
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:SY001 Forest Science - Master's Programme 300 HEC
Department:(S) > Dept. of Forest Resource Management
(NL, NJ) > Dept. of Forest Resource Management
Keywords:Fukthalt, form, partikelstorlek, fraktionsfördelning, värmevärde
URN:NBN:urn:nbn:se:slu:epsilon-s-1147
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-1147
Subjects:Forestry - General aspects
Forestry production
Processing of forest products
Language:Swedish
Deposited On:18 May 2012 06:39
Metadata Last Modified:06 Oct 2012 15:38

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