Dust explosion concentration
Physical meaning and use in risk assessment of powder minimum explosive concentration (MEC)
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Solids Handling Safety
# Dust explosion physical properties # MIT - Minimum Ignition Temperature of dust
1. Definition of dust explosive concentration
A dust cloud can explode only if there is the right proportion of powder in suspension in air. If the concentration of dust is too low or too high, explosion will not happen. The smallest concentration (kg of powder / m3) below which the explosion cannot happen is called the minimum explosive concentration or MEC.
determination of MEC
|Material||MEC in kg/m3 in air|
||> 0.010-0.030 [Laurent]|
0.050 for wheat flour [Mills]
|Phenol formaldehyd resins||0.015-0.025 [Laurent]|
|Wood flour||0.050 [Rhodes]
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