Zlochower Isaac A, Sapko Michael J, Perera Inoka E, Brown Connor B, Harris Marcia L, Rayyan Naseem S
Pittsburgh Mining Research Division, National Institute for Occupational Safety and Health, 626 Cochrans Mill Road, Pittsburgh, PA, 15236, United States.
J Loss Prev Process Ind. 2018 Jul;54:103-109. doi: 10.1016/j.jlp.2018.03.004.
The relationship between the explosion inerting effectiveness of rock dusts on coal dusts, as a function of the specific surface area (cm/g) of each component is examined through the use of 20-L explosion chamber testing. More specifically, a linear relationship is demonstrated for the rock dust to coal dust (or incombustible to combustible) content of such inerted mixtures with the specific surface area of the coal and the inverse of that area of the rock dust. Hence, the inerting effectiveness, defined as above, is more generally linearly dependent on the ratio of the two surface areas. The focus on specific surface areas, particularly of the rock dust, provide supporting data for minimum surface area requirements in addition to the 70% less than 200 mesh requirement specified in 30 CFR 75.2.
通过使用20升爆炸试验箱测试，研究了岩粉对煤尘的爆炸惰化效果与各组分比表面积（平方厘米/克）之间的关系。更具体地说，对于这种惰化混合物中岩粉与煤尘（或不可燃物与可燃物）的含量，与煤的比表面积和岩粉比表面积的倒数之间呈现出线性关系。因此，如上所定义的惰化效果，更普遍地线性依赖于两个比表面积的比值。对特定比表面积的关注，特别是岩粉的比表面积，除了30 CFR 75.2中规定的小于200目筛网的70%要求外，还为最小比表面积要求提供了支持数据。
