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中文摘要：
利用HY16429粉尘云引燃温度实验装置，测定不同煤种不同粒径煤尘云的最低引燃温度，研究挥发分和煤尘粒径2种因素对煤尘云最低引燃温度的综合影响。结果表明。同一煤种煤尘云最低引燃温度随粒径的减小而降低；当煤尘粒径≥250um时煤尘云出现火星的温度受挥发分含量的影响较小，且不同煤种出现火星的最低温度相近；煤尘粒径较小时煤尘云最低引燃温度随挥发分含量的增大而降低。
英文摘要：
Using the device for the HY16429 dust cloud minimum ignition temperature experiment, the minimum ignition temperatures for different kinds of coal dust clouds and different particle sizes are measured. The following results are obtained： The coal dust cloud minimum ignition temperature for a given kind of coal decreases with the decrease of the particle size; For different kinds of coal and with the coal dust particle size ≥250μm, the temperature for the coal dust clouds to generate sparks is not very much affected by the volatile content, and for the different kinds of coal, that temperature takes a value close to each other; when the coal dust particle size is small, the coal dust cloud minimum ignition temperature is reduced with the increase of the content of volatile content. Through analyzing the received coal dust cloud minimum ignition temperature characteristics, their relationship with the characteristics of coal dust and volatile is obtained.
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