Investigating the influence of work piece geometry on the specific energy use in size reduction with a multi-blade shaft mill
Das, Atanu Kumar; Agar, David; Larsson, Sylvia; Rudolfsson, MagnusAbstract
This study investigated the specific milling energy of rectangular pine (Pinus sylvestris L.) boards using a new size reduction technology, which can produce fine wood powders in a single-step operation. Multilinear regression (MLR) analysis was used to model the milling energy of a multi-blade shaft mill through a designed series of experiments having three input parameters: the moisture content of the board, milling blade speed and board feeding speed. The observed specific milling energy ranged from 60 to 172 kWh t−1 [DM] and the MLR model showed it was proportional to the blade speed and the moisture content. The results suggest that multi-blade shaft milling is a two-dimension extension of singular circular blade milling with regard to work piece shape and sawblade teeth engagement effects. The findings were compared with the specific milling energy of pine logs obtained in a previous study.
Keywords
Comminution; Wood powder technology; MBSM; Fine grinding; Experimental design; MillingPublished in
Biosystems Engineering2021, volume: 209, pages: 210-215
Authors' information
Sustainable Development Goals
SDG9 Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
UKÄ Subject classification
Wood Science
Publication Identifiers
DOI: https://doi.org/10.1016/j.biosystemseng.2021.07.002
URI (permanent link to this page)
https://res.slu.se/id/publ/112816