Messages

Subject:
but maybe not as explosive as some coal dusts

Ian Neuhaus
I found this https://pdfs.semanticscholar.org/c050/3cda4f235e9ab14fd92d196baa12be4fd985.pdf

inter alia it advises that
bitumous coal dusts are more explosive than anthracite coal dusts,
the as the dust particle size gets smaller the risk of an explosion increases,
that the ignition temperature of a coal dust layer decreases as the volatile content increases.
At high volatile contents, the ignition temperature of a coal dust layer approaches a limiting temperature as low as 160EC (320EF).

importantly, heat is more important than static electricity when it comes to initiating a coal dust explosion

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