工业用铁粉爆炸危险性试验研究

发布时间：2018-01-26 00:52

  本文关键词： 打磨铁粉 粉尘爆炸 最低着火温度 爆炸下限 爆炸指数　出处：《消防科学与技术》2017年07期 　论文类型：期刊论文

【摘要】：为研究金属加工过程中产生铁粉的爆炸危险性,采用G-G管式炉与20 L球形爆炸测试装置对常温常压下3种打磨铁粉进行测试,得到铁粉试样的可燃性分类等级及爆炸参数,并依据实验结果对试样粉尘的爆炸危险性进行分级。试验结果表明,三种铁粉试样的粉尘云最低着火温度分别是480、420、580℃,爆炸下限质量浓度分别在125~375、60~125、250~375g/m3,爆炸指数分别为9.23、8.96、5.84 MPa·m/s,其粉尘爆炸危险性等级均为St1级。
[Abstract]:In order to study the explosion risk of iron powder produced during metal processing, three kinds of grinding iron powder were tested by G-G tube furnace and 20L spherical explosion test device at room temperature and atmospheric pressure. The flammability classification and explosion parameters of iron powder samples were obtained, and the explosion hazard of sample dust was classified according to the experimental results. The minimum ignition temperature of dust cloud of three kinds of iron powder samples is 480,420,580 鈩，

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