Development and Application of a Method for Predicting the Spontaneous Combustion Potential of Bituminous Coals.
Proceeds 24th Int'l Conf Safety in Mines Research Inst Makeevka St Research Inst Ussr :9 pages
The U.S. Bureau of Mines developed a method for predicting the spontaneous combustion potential of bituminous coals. An adiabatic oven was used to determine each coal's minimum self-heating temperature (sht), the minimum initial temperature that produced a sustained exothermic reaction in the coal. A statistical analysis showed that the sht of a bituminous coal can be predicted from the coal's dry ash-free oxygen content. Cyprus Coal Corp. used the predictive formula in the evaluation of spontaneous combustion occurrences at two of its mines, and in the design of spontaneous combustion monitoring and prevention plans at a third mine. The analysis of the heating events showed that the coals had high self- heating tendencies, as predicted by the Bureau's method, and that mining practices and inherent seam conditions aggravated the seam's spontaneous combustion potential.
Proceeds 24th Int'l. Conf. Safety in Mines Research Inst., Makeevka St. Research Inst., Ussr