Investigating the influence of work piece geometry on the specific energy use in size reduction with a multi-blade shaft mill

Sammanfattning

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.

Nyckelord

Comminution; Wood powder technology; MBSM; Fine grinding; Experimental design; Milling

Publicerad i

Biosystems Engineering
2021, volym: 209, sidor: 210-215

SLU författare

• Das, Atanu Kumar

  • Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
    

• Agar, David

  • Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
    

• Larsson, Sylvia

  • Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
    

• Rudolfsson, Magnus

  • Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
    

Globala målen (SDG)

SDG9 Hållbar industri, innovationer och infrastruktur

UKÄ forskningsämne

Trävetenskap

Publikationens identifierare

• DOI: https://doi.org/10.1016/j.biosystemseng.2021.07.002

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/112816