Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9826120 | International Journal of Coal Geology | 2005 | 6 Pages |
Abstract
Strip samples from the Boundary Hill pit at Callide have been tested in an adiabatic oven to assess the effect of moisture on the R70 self-heating rate of coal. The two strip samples tested had R70 self-heating rate values of 10.23 and 8.61 °C/h. As the moisture content of the coal was progressively increased, from the dry state of the test, the R70 value decreased dramatically. At approximately 40-50% of the moisture holding capacity of the coal, the self-heating rate becomes measurable. Above this critical level of moisture content, the heat produced by oxidation is dissipated by moisture evaporation and coal self-heating is significantly delayed.
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Authors
B. Basil Beamish, Garth R. Hamilton,