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P max and K St . This result suggested that the effect of sulfur on P max and K St had been offset by the high content of rosin acid in P. massoniana dust. The wood dust with similar particle size had different explosion pressure and explosion index values, and the relationship was the same as the H/C ratio of each kind of wood dust, which are ranked as P. alba > C. camphora > P. massoniana .
Fig. 6. Pressure / time curve ( Cinnamonum camphora dust with particle size of 63 to 125 μm) Effect of dust concentration on explosion pressure and explosion index Figure 8 shows the explosion pressure and explosion index of dust samples with increasing dust concentration. As the dust concentration increased, the explosion pressure rose initially until the maximum was reached and decreased afterwards, demonstrating that the dust concentration has a threshold value. Lee et al. (2016) and Kordylewski and Amrogowicz (1992) obtained similar results. When dust concentration increased within the threshold, the dust involved in the explosion reaction and the heat released increased, leading to a rise in the explosion pressure.
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Guo et al . (2019 ). “Explosion of wood d usts,” B io R esources 14(2), 3182-3199.
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