Pulverizing Characteristic of Woody Biomass by a Kind of Impact Mill

DOI

10.2991/amcce-15.2015.404How to use a DOI?

Keywords

Wood biomass; Pulverizing characteristic; Impact mill; Pulverizing mechanism

Abstract

To investigate the pulverizing characteristic of wood biomass, the dried woody chip and the wood chip with four different moisture content of 5, 10, 15, 20wt% were chose as the raw materials, a kind of impact mill, the universal mill, was used to pulverize the wood biomass at different feed rates, the particle sizes (characteristic particle size and average particle size), uniformity coefficient, density, aspect ratio of wood powder and the specific energy consumption were measured, the pulverizing mechanism was also discussed. The results indicate that the specific energy consumption is in a range from 100 to 400kWh/t, and decreases with the increasing feed rate without changing of the basic motor power; the characteristic particle size is about 625 m, the average particle size is 470 m or so, and both characteristic particle size and average particle size increase with the increasing feed rate, and then decrease before the feed rate reaches to the maximum capacity of the mill; the uniformity coefficient is range from 1.30 to 1.50; the bulk density is about 0.20g/cm3, the tap density is about 0.30g/cm3, both bulk density and tap density increase with the increase of the feed rate; the aspect ratio is in a range from 2.45 to 2.90 randomly with a common tendency of declining slightly following the increase of feed rate; the pulverizing mechanism of the biomass is the cross section of breakage.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Chengbao Wu
AU  - Guosheng Gai
AU  - Yufeng Yang
AU  - Zhixin Shang
PY  - 2015/04
DA  - 2015/04
TI  - Pulverizing Characteristic of Woody Biomass by a Kind of Impact Mill
BT  - Proceedings of the 2015 International Conference on Automation, Mechanical Control and Computational Engineering
PB  - Atlantis Press
SP  - 1058
EP  - 1063
SN  - 1951-6851
UR  - https://doi.org/10.2991/amcce-15.2015.404
DO  - 10.2991/amcce-15.2015.404
ID  - Wu2015/04
ER  -