Using of high-speed mills for biomass disintegration
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Kuupäev
2019
Kättesaadavus
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Abstrakt
The need for mechanical disintegration of biomass is very current topic with regard to
the requirements of an agrarian sector, beside the importance of a material’s moisture content
reduction to be used in further applications. The drawbacks of commonly applied devices are the
limited use of moist biomass and high energy consumption for disintegration. In collaboration
with LAVARIS company, there were tested two high-speed mills LAV 400/1R with single rotor
(used for a first milling) and LAV 300/2R with double rotors (used for a second milling), which
were primarily designed for crushing of concrete, rubber and construction waste. The goal of the
new technical solution was a disintegration of biomass on example of pine sawdust and
miscanthus together with examination of simultaneous drying in order to achieve a desired
fraction (particle size) and moisture content of biomass material. Experimental tests on highspeed mills have shown the following results: in case of pine sawdust about 98% of output particle
size after passing through the first and second milling was smaller than 1.5 mm, and smaller than
1 mm for miscanthus (sieve analysis method was used for determination), i.e. significant
reduction was achieved comparing to initial particle size. Moisture content of the materials after
disintegration (first and second) decreased from 37.08% to 8.55% for pine sawdust and from
24.43% to 7.19% for miscanthus. Based on the results, it can be concluded that the mechanical
disintegration of biomass by high-speed mills has a great potential to become an effective part of
raw materials’ pre-treatment technology, not only in agriculture, but also in production of
different types of biofuels.
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Article
Märksõnad
pine sawdust, miscanthus, particle size, sieve analyses, moisture content, articles