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- W587922663 abstract "Experimental studies were carried out to investigate explosion characteristics of coal dust-rock dust (limestone) mixture. The apparatus used was of closed-type (Combustion and Flame, Vol.21, No.2). Before experiments, the rock dust percentage, R, in the cloud of mixture was experimentally confirmed to be equal to that of mixture. R is defined asR/100=r/D=r/(r+c)where D: total dust concentrationr: rock dust concentrationc: coal dust concentration.Relations between R and D, r and c, r/c and c, and R and c under the condition of explosion limit are shown, respectively, in Figs. 13 and 14, Fig. 15, Fig. 16, and Fig. 17 in the text. As a result, it was found that1) reduction of the explosion pressure by the rock dust mixed may be little, if rock dust mixed is not sufficient to suppress the explosion completely (Fig. 12), 2) the minimum rock dust concentration may be defined to suppress explosions at any coal dust concentration, and the highest value of the minimum rock dust concentration obtained in the present study is ca. 1300g/m3 for Horonai coal of 270-400 mesh in size (Fig. 15), 3) the rock dust percentage required to suppress the explosion at the coal dust concentration of 250g/m3 may be considered as the minimum rock dust percentage required for suppression of explosions at any coal dust concentration (Fig. 17)." @default.
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- W587922663 date "1980-01-01" @default.
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- W587922663 title "Explosion Characteristics of Coal Dust-Rock Dust Mixture; Part I Experiment" @default.
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- W587922663 doi "https://doi.org/10.2473/shigentosozai1953.96.1107_319" @default.
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