Abstract
Experiments were conducted on the inerting of magnesium dust with N 2, CO 2, and Ar. Comparing the maximum explosion pressure, maximum rate of pressure rise, and limiting oxygen concentration with different inertants, it was determined that Ar is not the best inert gas under all conditions as commonly believed. N 2 was more effective than Ar as an inertant. CO 2 provided more inerting effect than either Ar and N 2 in low magnesium dust concentrations, although explosibility was increased at higher dust concentrations. Both N 2 and CO 2 as inerting agents showed higher LOC values than Ar. These results indicated that N 2 is a more economical inerting gas than Ar for the tested coarse magnesium dust.
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