东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2007, Vol. 28 ›› Issue (12): 1775-1778.DOI: -

• 论著 • 上一篇    下一篇

基于着火敏感性的镁粉防爆方法研究

李刚;钟英鹏;苑春苗;陈宝智;   

  1. 东北大学资源与土木工程学院;东北大学资源与土木工程学院;东北大学资源与土木工程学院;东北大学资源与土木工程学院 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2007-12-15 发布日期:2013-06-24
  • 通讯作者: Li, G.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50674023)

On the explosion proof of magnesium powder in view of its sensitivity to ignition

Li, Gang (1); Zhong, Ying-Peng (1); Yuan, Chun-Miao (1); Chen, Bao-Zhi (1)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2007-12-15 Published:2013-06-24
  • Contact: Li, G.
  • About author:-
  • Supported by:
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摘要： 对中国镁粉的主要生产工艺进行了概述,针对不同工艺生产的典型粒径镁粉,对D50为6,47,104,173μm的镁粉进行了最小点火能和最低着火温度的着火敏感性测试,对应4种粒径镁粉的最小点火能分别为:小于2,260,300 mJ,大于2000 J;粉尘云最低着火温度分别为480,520,620℃,大于700℃,而粉尘层最低着火温度都高于450℃.在此基础上从镁粉着火敏感性的角度对镁粉主要生产工艺的危险性和引燃源进行了分析.

关键词: 镁粉, 着火敏感性, 最小点火能, 最低着火温度, 防爆

Abstract: The main technological processes for magnesium powder production are reviewed. The sensitivity to ignition was tested for four kinds of magnesium powder of which the D50 included 6, 47, 104 and 173 μm, as well as the minimum ignition energy (MIE) and minimum ignition temperature (MIT). Respectively, the MIE test results for the four samples are <2, 260, 300 mJ and >2000 J, and the MIT values for relevant dust clouds are 480, 520, 620°C and higher than 700°C. With respect to the MIT of a dust layer, all the values are higher than 450°C. Then, the risk of conventional technological processes of magnesium powder production and their possible ignition sources are discussed in a perspective of the sensitivity to ignition.

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