煤岩混合型粉尘云最低着火温度试验研究

发布时间：2018-10-20 12:52

【摘要】：为研究半煤岩巷道中岩粉质量分数和煤的挥发分与煤岩混合型粉尘云最低着火温度的关系,选取挥发分差异较大的5种煤样以相同比例配制煤岩混合型粉尘,利用粉尘云最小点火温度测定仪进行煤岩混合型粉尘试验。结果表明,当煤岩混合型粉尘中岩粉质量分数低于40%时,岩粉的混合会导致混合型粉尘云最低着火温度发生小幅度波动;当岩粉质量分数高于40%时,煤岩混合型粉尘最低着火温度会随岩粉质量分数的增加而大幅度升高;挥发分质量分数越小的煤粉,其混合型粉尘云最低着火温度越容易受岩粉质量分数的影响。
[Abstract]:In order to study the relationship between the mass fraction of rock powder and volatile matter of coal in semi-coal roadway and the minimum ignition temperature of coal-rock mixed dust cloud, five kinds of coal samples with big difference in volatile content were selected to prepare coal and rock mixed dust in the same proportion. The coal and rock mixed dust test was carried out by using the dust cloud minimum ignition temperature tester. The results show that when the mass fraction of rock powder in coal-rock mixed dust is lower than 40, the minimum ignition temperature of mixed dust cloud will fluctuate by a small margin, and when the mass fraction of rock powder is above 40, the minimum ignition temperature of mixed dust cloud will fluctuate. The minimum ignition temperature of coal-rock mixed dust increases greatly with the increase of the mass fraction of rock powder, and the lower the mass fraction of volatile matter, the lower the minimum ignition temperature of mixed dust cloud is affected by the mass fraction of rock powder.
【作者单位】：辽宁工程技术大学安全科学与工程学院;矿山热动力灾害与防治教育部重点实验室;
【基金】：国家自然科学基金项目(51404126)
【分类号】：TD714.5

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