Prediction of explosive properties of coal dust
Abstract
One of the main factors characterizing the propensity of dust to explode is the volatile yield. Sometimes it is considered to determine the degree of dust explosiveness. There are different opinions about the relationship between the explosiveness of coal dust and the content of volatiles. Some researchers, in principle not denying the influence of volatiles on explosiveness, do not find a strict regularity in it, which would apply to coals of all deposits. Other authors believe that the explosivity of coal dust is a function of volatiles and define it as a linear dependence. The deviation of explosiveness from this regularity, observed by some researchers in the laboratory study of coals, is apparently explained by the influence of oxidation, ash content and partly by the petrographic composition of coals. As our studies of seven coal seams of Kuzbass have shown, dust explosiveness in the first period of oxidation slightly increases and then decreases. It increases, apparently, due to sorption of oxygen ...
References
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