Impact of the Drying Temperature and Grinding Technique on Biomass Grindability

Marcin Jewiarz, Marek Wróbel, Krzysztof Mudryk and Szymon Szufa
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Marcin Jewiarz: Department of Mechanical Engineering and Agrophysics, University of Agriculture in Krakow, 30-149 Kraków, Poland
Marek Wróbel: Department of Mechanical Engineering and Agrophysics, University of Agriculture in Krakow, 30-149 Kraków, Poland
Krzysztof Mudryk: Department of Mechanical Engineering and Agrophysics, University of Agriculture in Krakow, 30-149 Kraków, Poland
Szymon Szufa: Department of Environmental Engineering, Lodz University of Technology, 90-924 Lodz, Poland

Energies, 2020, vol. 13, issue 13, 1-22

Abstract: 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.

Keywords: bulk density; particle size distribution; energy demand; Scots pine; European beech; Cup plant; Giant miscanthus (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (15)

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