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Optimizing the particle size of coal for CWM in view of fluidity. [Biomodal]

Abstract

As is well known, the viscosity of CWM is considerably influenced by the distribution of coal particle sizes and has bearing on particle packing density or porosity. A model for representing the viscosity of CWM in terms of particle porosity and specific surface was designed. Also, experimental verification was conducted for the method of optimizing particle size on a two-stage grinding system. The results are as follows: The viscosity of CWM is influenced not only by the porosity of coal particles, but also by the specific surface; also, it is correlated to the distance between suspended particles. At the two-stage grinding experiments, a particle size distribution leading to a low viscosity was obtained by mixing coarse and fine particles at 4:1. This has demonstrated that the use of an agitating mill for fine particles is of help. (11 figs, 2 tabs, 6 refs)
Publication Date:
Oct 25, 1987
Product Type:
Conference
Report Number:
CONF-8710290-
Reference Number:
NEDO-87-910861; EDB-88-065111
Resource Relation:
Journal Name: Nippon Kogyo Kaishi; (Japan); Journal Volume: 103:1196; Conference: 37. Japan coal preparation technology symposium, Tokyo, Japan, 26 Oct 1987
Subject:
01 COAL, LIGNITE, AND PEAT; 02 PETROLEUM; FUEL SLURRIES; PARTICLE SIZE; VISCOSITY; OPTIMIZATION; COAL; DISTRIBUTION; MIXTURES; WATER; CARBONACEOUS MATERIALS; DISPERSIONS; ENERGY SOURCES; FOSSIL FUELS; FUELS; HYDROGEN COMPOUNDS; MATERIALS; OXYGEN COMPOUNDS; SIZE; SLURRIES; SUSPENSIONS; 013000* - Coal, Lignite, & Peat- Transport, Handling, & Storage; 022000 - Petroleum- Transport, Handling, & Storage
OSTI ID:
5494171
Research Organizations:
The Univ. of Tokyo, Tokyo, Japan
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: CODEN: NIKKA
Submitting Site:
NEDO
Size:
Pages: 60-62
Announcement Date:

Citation Formats

Matsuo, Seiji, Nonaka, Michio, Okano, Yasuhiko, and Inoue, Toshio. Optimizing the particle size of coal for CWM in view of fluidity. [Biomodal]. Japan: N. p., 1987. Web.
Matsuo, Seiji, Nonaka, Michio, Okano, Yasuhiko, & Inoue, Toshio. Optimizing the particle size of coal for CWM in view of fluidity. [Biomodal]. Japan.
Matsuo, Seiji, Nonaka, Michio, Okano, Yasuhiko, and Inoue, Toshio. 1987. "Optimizing the particle size of coal for CWM in view of fluidity. [Biomodal]." Japan.
@misc{etde_5494171,
title = {Optimizing the particle size of coal for CWM in view of fluidity. [Biomodal]}
author = {Matsuo, Seiji, Nonaka, Michio, Okano, Yasuhiko, and Inoue, Toshio}
abstractNote = {As is well known, the viscosity of CWM is considerably influenced by the distribution of coal particle sizes and has bearing on particle packing density or porosity. A model for representing the viscosity of CWM in terms of particle porosity and specific surface was designed. Also, experimental verification was conducted for the method of optimizing particle size on a two-stage grinding system. The results are as follows: The viscosity of CWM is influenced not only by the porosity of coal particles, but also by the specific surface; also, it is correlated to the distance between suspended particles. At the two-stage grinding experiments, a particle size distribution leading to a low viscosity was obtained by mixing coarse and fine particles at 4:1. This has demonstrated that the use of an agitating mill for fine particles is of help. (11 figs, 2 tabs, 6 refs)}
journal = {Nippon Kogyo Kaishi; (Japan)}
volume = {103:1196}
place = {Japan}
year = {1987}
month = {Oct}
}