Experimental approach to the determination of explosible lean limits for coal dust and methane mixtures

Jensen B., Gillies A.D.S., Golledge P., Urbanik W. and Davis R. (1988). Experimental approach to the determination of explosible lean limits for coal dust and methane mixtures. In: Proc 4th US Mine Vent Symp. Proceedings of the 4th US Mine Ventilation Symposium, Berkeley, CA, USA, (549-557). June 5, 1989-June 7, 1989.

Author Jensen B.
Gillies A.D.S.
Golledge P.
Urbanik W.
Davis R.
Title of paper Experimental approach to the determination of explosible lean limits for coal dust and methane mixtures
Conference name Proceedings of the 4th US Mine Ventilation Symposium
Conference location Berkeley, CA, USA
Conference dates June 5, 1989-June 7, 1989
Proceedings title Proc 4th US Mine Vent Symp
Publisher Publ by SME
Publication Year 1988
Sub-type Fully published paper
Open Access Status Not yet assessed
ISBN 0873350820
Start page 549
End page 557
Total pages 9
Language eng
Abstract/Summary A program of research on the explosibility of coal dust/methane mixtures is described. An explosion test chamber uses a rotating drum concept for dust dispersion and infra-red sensors for dust concentration measurement. A new approach to the determination of coal dust concentration is included with a description of a dielectric dust probe. The measurement technique is based on the change in dielectric constant as the proportion of coal dust in air between probe capacitor plates increases or decreases. The particle size distribution, coal proximate analysis and elemental analysis were studied. Explosibility test results indicate that a very low concentration of coal dust can form an explosible mixture when dispersed in methane concentration of just below five percent. With low temperature initiators, the coal dust lean limit concentration rises rapidly as the methane concentration is reduced.
Subjects 2200 Engineering
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Conference Paper
Sub-type: Fully published paper
Collection: Scopus Import - Archived
 
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Created: Tue, 14 Jun 2016, 12:46:15 EST by System User