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The thermal properties of four bituminous coals were studied using isothermal and temperature-programmed calorimeters, such as a differential thermal analysis, a heat flux calorimeter C80 and an thermal activity monitor (TAM-III). The corresponding spontaneous ignition was measured in an adiabatic spontaneous ignition tester. It was found that there were weak exothermic activities in bituminous coal at 50-100°C and meanwhile carbon monoxide and carbon dioxide was generated. These thermal behaviors are responsible for the self heating from 50°C and spontaneous ignition at 80°C.
PAPER REVISED: 2008-08-02
PAPER ACCEPTED: 2008-12-26
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THERMAL SCIENCE YEAR 2009, VOLUME 13, ISSUE Issue 1, PAGES [105 - 112]
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