Materials Map

Discover the materials research landscape. Find experts, partners, networks.

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The Materials Map is an open tool for improving networking and interdisciplinary exchange within materials research. It enables cross-database search for cooperation and network partners and discovering of the research landscape.

The dashboard provides detailed information about the selected scientist, e.g. publications. The dashboard can be filtered and shows the relationship to co-authors in different diagrams. In addition, a link is provided to find contact information.

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Materials Map under construction

The Materials Map is still under development. In its current state, it is only based on one single data source and, thus, incomplete and contains duplicates. We are working on incorporating new open data sources like ORCID to improve the quality and the timeliness of our data. We will update Materials Map as soon as possible and kindly ask for your patience.

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in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (3/3 displayed)

  • 2023Influence of wood pellets properties on their grinding performance4citations
  • 2019From wood chips to pellets to milled pellets: The mechanical processing pathway of Austrian pine and European beech24citations
  • 2017Full-scale Milling Tests of Wood Pellets for Combustion in a Suspension-Fired Power Plant Boilercitations

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Chart of shared publication
Jensen, Peter Arendt
3 / 34 shared
Henriksen, Ulrik Birk
3 / 13 shared
Clausen, Sønnik
3 / 5 shared
Masche, Marvin
3 / 5 shared
Holm, Jens Kai
2 / 9 shared
Ahrenfeldt, Jesper
3 / 11 shared
Wadenbäck, Johan
1 / 2 shared
Chart of publication period
2023
2019
2017

Co-Authors (by relevance)

  • Jensen, Peter Arendt
  • Henriksen, Ulrik Birk
  • Clausen, Sønnik
  • Masche, Marvin
  • Holm, Jens Kai
  • Ahrenfeldt, Jesper
  • Wadenbäck, Johan
OrganizationsLocationPeople

article

From wood chips to pellets to milled pellets: The mechanical processing pathway of Austrian pine and European beech

  • Jensen, Peter Arendt
  • Henriksen, Ulrik Birk
  • Clausen, Sønnik
  • Masche, Marvin
  • Puig Arnavat, Maria
  • Holm, Jens Kai
  • Ahrenfeldt, Jesper
Abstract

This study assesses the changes in physical properties (particle size, shape, density) of Austrian pine (softwood) and European beech (hardwood), as they are mechanically processed from wood chips to pellets and then to milled pellets. A series of semi-industrial hammer mills and a semi-industrial pellet mill were used. The specific pelletizing and grinding energy, as well as the pellet mill and hammer mill capacity, were determined. Size, shape, and bulk density of the wood particles obtained at each processing step were studied. The pellet quality was analyzed according to international standards. Results show that the pelletization modifies the internal pellet particle shape and length due to the breakage of particles across their longest dimension, leading to more circular and less elongated particles. However, the particle width was nearly unaffected, indicating a directional fracture behavior for wood particles during pelletization. The particle breaking effect was more dominant for beech particles. Beech contained a lower amount of extractives than pine that led to higher specific pelletizing energy. In addition, beech pellets had a lower quality concerning durability and density. Relationships between specific grinding energies and characteristic product particle sizes were also determined. E.g., the specific energy for grinding pine pellets was about 10 kWh/t oven-dry wood for a characteristic product size of 0.8 mm, while grinding beech pellets required about 7 kWh/t oven-dry wood for a characteristic product size of 0.6 mm. The study concludes that less energy is needed to pelletize pine than beech under the same processing conditions, but more energy is needed to mill pine than beech.

Topics
  • density
  • impedance spectroscopy
  • grinding
  • laser emission spectroscopy
  • durability
  • wood
  • fracture behavior
  • particle shape