Abstract
Dispersion phenomena of coal dust and methods to prevent dispersion were studied in a wind tunnel. The critical friction velocity had its minimum value when the particle diameter of coal dust was around 180 μm. At wind speeds between 10 and 15 m/s, the dispersing quantity of coal dust had its maximum value when the particle diameter of coal dust was between 200 and 600 μm. The dispersion quantity of less dispersable fine powder increased when it was mixed with more dispersable powder or when coarse grain was located on the surface of the powder bed, and the quantity had its maximum value at a certain ratio of the mixture. The addition of water to coal dust was effective for preventing dispersion, especially at low wind speed and short elapsed time after its addition. Non-dispersion chemicals completely prevented dispersion. Fundamental data to determine the desirable amount and concentration of the chemicals for practical use were obtained.
| Original language | English |
|---|---|
| Pages (from-to) | 674-679 |
| Number of pages | 6 |
| Journal | Kagaku Kogaku Ronbunshu |
| Volume | 11 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1985 |
| Externally published | Yes |
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Keywords
- Critical Friction Velocity
- Dispersing Quantity
- Dispersion Prevention
- Dust Control Agent
- Moisture Content
- Powder
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
Cite this
Study of Prevention of Dispersion of Coal Dust in the Wind. / Takeuchi, Fumiaki; Yamanaka, Kiyoshi.
In: Kagaku Kogaku Ronbunshu, Vol. 11, No. 6, 1985, p. 674-679.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Study of Prevention of Dispersion of Coal Dust in the Wind
AU - Takeuchi, Fumiaki
AU - Yamanaka, Kiyoshi
PY - 1985
Y1 - 1985
N2 - Dispersion phenomena of coal dust and methods to prevent dispersion were studied in a wind tunnel. The critical friction velocity had its minimum value when the particle diameter of coal dust was around 180 μm. At wind speeds between 10 and 15 m/s, the dispersing quantity of coal dust had its maximum value when the particle diameter of coal dust was between 200 and 600 μm. The dispersion quantity of less dispersable fine powder increased when it was mixed with more dispersable powder or when coarse grain was located on the surface of the powder bed, and the quantity had its maximum value at a certain ratio of the mixture. The addition of water to coal dust was effective for preventing dispersion, especially at low wind speed and short elapsed time after its addition. Non-dispersion chemicals completely prevented dispersion. Fundamental data to determine the desirable amount and concentration of the chemicals for practical use were obtained.
AB - Dispersion phenomena of coal dust and methods to prevent dispersion were studied in a wind tunnel. The critical friction velocity had its minimum value when the particle diameter of coal dust was around 180 μm. At wind speeds between 10 and 15 m/s, the dispersing quantity of coal dust had its maximum value when the particle diameter of coal dust was between 200 and 600 μm. The dispersion quantity of less dispersable fine powder increased when it was mixed with more dispersable powder or when coarse grain was located on the surface of the powder bed, and the quantity had its maximum value at a certain ratio of the mixture. The addition of water to coal dust was effective for preventing dispersion, especially at low wind speed and short elapsed time after its addition. Non-dispersion chemicals completely prevented dispersion. Fundamental data to determine the desirable amount and concentration of the chemicals for practical use were obtained.
KW - Critical Friction Velocity
KW - Dispersing Quantity
KW - Dispersion Prevention
KW - Dust Control Agent
KW - Moisture Content
KW - Powder
UR - http://www.scopus.com/inward/record.url?scp=84998345761&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84998345761&partnerID=8YFLogxK
U2 - 10.1252/kakoronbunshu.11.674
DO - 10.1252/kakoronbunshu.11.674
M3 - Article
VL - 11
SP - 674
EP - 679
JO - Kagaku Kogaku Ronbunshu
JF - Kagaku Kogaku Ronbunshu
SN - 0386-216X
IS - 6
ER -