摘要: Oil shales differ from coals in that they contain less carbonaceous material, convertible to volatile hydrocarbons, and more inorganic rock. In all precommercial oil shale development, involving extensive full-scale mining operati... 展开 Oil shales differ from coals in that they contain less carbonaceous material, convertible to volatile hydrocarbons, and more inorganic rock. In all precommercial oil shale development, involving extensive full-scale mining operations, there have been no explosions. However, large-scale mine tests with oil shale dusts by the Bureau of Mines showed that propagating explosions could be induced under certain circumstances. Laboratory tests were conducted on a broad spectrum of oil-shale dusts to define chemical properties and to seek correlations with subsequently determined fire and explosion properties. These latter properties, indicative of safety hazards, increased as the Fischer assay oil yield of the dusts increased and as particle size decreased. Laboratory data were used to relate fire and explosion properties of oil shales to those of coals and other carbonaceous materials and to assist in the identification and evaluation of potential hazardous situations tht may be encountered in oil shale mining and processing. 收起