Abstract
Powder products are frequently meet as dust mixtures in industrial processes. However the effect of mixing combustible dusts on the flammability and explosion behaviour of their mixture is still unclear. This work dealing with the explosibility and flammability of dust mixtures made of Nicotinic acid and Lycopodium. Explosion tests on the 20-L explosion vessel at different dust concentrations and relative amounts were performed. The two dusts showed the same minimum explosion concentration (MEC), but different explosibility parameters (KSt and Pmax). The predominant influence of the most reactive compound (Nicotinic acid) on the explosibility of the dust mixture was found. This effect was not encountered for the minimum explosion concentration.
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