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Effectiveness of various rock dusts as agents of coal dust inerting

✍ Scribed by Paul R. Amyotte; Kenneth J. Mintz; Michael J. Pegg


Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
387 KB
Volume
5
Category
Article
ISSN
0950-4230

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✦ Synopsis


An experimental investigation of requirements for coal dust inerting was conducted in a 26 I, spherical chamber. A mine-face sample of coal from the Prince mine of the Cape Breton Development Corporation was tested; rock dusts used were limestone, dolomite (two particle sizes) and magnesite.

Limestone, dolomite and magnesite (all having approximately the same particle size) were found to be similar in inerting effectiveness, indicating that the decomposition reaction of the endothermic rock dust did not exert an effect over the short time scales during which the volatiles burn during an explosion. Tests with the two sizes of dolomite showed that a decrease in rock dust particle size could significantly lowerthe amount required to inert.


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