Impact of the Drying Temperature and Grinding Technique on Biomass Grindability

Marcin Jewiarz , Marek Wróbel , Krzysztof Mudryk , Szymon Szufa


The process of biomass compaction depends on many factors, related to material and process. One of the most important is the proper fragmentation of the raw material. In most cases, more fragmented raw material makes it easier to achieve the desired quality parameters of pellets or briquettes. While the chipping of biomass prefers moist materials, for grinding, the material needs to be dried. As drying temperature changes the properties of the material, these may affect the grinding process. The aim of this work was to determine the influence of the drying temperature of biomass raw material in the range of 60–140 °C on the biomass grindability. To only determine this effect, without the influence of moisture, grinding was carried out on the material in a dry state. The research was carried out on a mill with a knife and hammer grinding system, which is the most popular in the fragmentation of biomass. The analysis of particle size distribution and bulk density of the obtained material was carried out. The energy demand for the grinding process was determined and it was shown that drying temperature, grinding system, and mainly type of biomass affects the grindability.
Author Marcin Jewiarz (FoPaPE / DoMEaA)
Marcin Jewiarz,,
- Department of Mechanical Engineering and Agrophysics
, Marek Wróbel (FoPaPE / DoMEaA)
Marek Wróbel,,
- Department of Mechanical Engineering and Agrophysics
, Krzysztof Mudryk (FoPaPE / DoMEaA)
Krzysztof Mudryk,,
- Department of Mechanical Engineering and Agrophysics
, Szymon Szufa - Politechnika Łódzka (PŁ)
Szymon Szufa,,
Journal seriesEnergies, [ENERGIES], ISSN 1996-1073, (N/A 140 pkt)
Issue year2020
Publication size in sheets1.05
Article number3392
Keywords in Englishbulk density; particle size distribution; energy demand; Scots pine; European beech; Cup plant; Giant miscanthus
ASJC Classification1700 General Computer Science
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa (CC-BY); after publication
Impact of the Drying Temperature and Grinding Technique on Biomass Grindability of 17-07-2020
10,03 MB
Score (nominal)140
Score sourcejournalList
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.156; WoS Impact Factor: 2018 = 2.707 (2) - 2018=2.99 (5)
Citation count*
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FinansowanieThis research was supported by the Ministry of Science and Higher Education of the Republic of Poland (Faculty of Production and Power Engineering, University of Agriculture in Krakow). Part of the studies presented were supported by the National Center of Research and Development (NCBR) Poland under the LIDER research program. Grant acronym BIOCARBON, with the title “Modern technology biomass torrefaction process to produce fuel mixtures, biocoal as additives for fertilizers, activated carbon for energy sector, agriculture, civil engineering and chemical industry”, “LIDER IX” NCBR 2014-2020 (grant no. 0155/L-9/2017).
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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