Mutual effects of pyrite and moisture on coal self-heating rates and reaction rate data for pyrite oxidation

Arisoy A., Beamish B.

FUEL, vol.139, pp.107-114, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 139
  • Publication Date: 2015
  • Doi Number: 10.1016/j.fuel.2014.08.036
  • Journal Name: FUEL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.107-114
  • Istanbul Technical University Affiliated: Yes

Abstract

The accelerating effect of reactive pyrite on coal self-heating was measured experimentally using an adiabatic oven. Reaction rate data obtained from the experimental results were applied to a numerical model of coal self-heating. The model results showed reasonable agreement with the measured time taken to reach thermal runaway. However, the shape of the self-heating curves showed subtle variations. Since the pyrite oxidation reaction consumes moisture, there was a mutual effect of accelerated heating as less heat was used up in moisture evaporation. (C) 2014 Elsevier Ltd. All rights reserved.