Document Type
Conference Paper
Publication Date
2-2016
Abstract
Adiabatic oven testing of heat-affected and normal coal from the same location at Mandalong Mine shows substantial differences in intrinsic self-heating rates and self-heating behaviour. While initial self-heating rates of the heat-affected coal are greater than normal coal under site conditions, there is no sustained self-heating to thermal runaway due to a decrease in the number of reactive sites remaining in the heat-affected coal and greater inaccessibility to those sites that do exist. This behaviour is attributable to the vesicular nature of the heat-affected coal contributing to easy access to open pores resulting in the initial burst of self-heating. However, the thermal alteration of the coal also contributes to destruction of reactive sites and makes access to the remaining reactive sites in the micropore system of the coal more difficult.
Publication Details
Basil Beamish, Mark Cosgrove and Jan Theiler, Self-Heating Behaviour of Heat-Affected Coal, in Naj Aziz and Bob Kininmonth (eds.), Proceedings of the 16th Coal Operators' Conference, Mining Engineering, University of Wollongong, 10-12 February 2016, 451-455.