EFFECT OF PARTICLE-SIZE ON THE THERMAL AND COMBUSTION PROPERTIES OF COAL

In this research effect of particle size on the combustion properties of Cayirhan coal sample was studied. Non-isothermal thermogravimetry a nd derivative thermogravimetry (TG/DTG) experiment were carried out fo r twelve different size fractions of the Cayirhan coal sample. Thermog ravimetry experiments were performed from ambient to 900 degrees C in air atmosphere. Differential thermogravimetric data were analysed usin g an Arrhenius type reaction model assuming a first-order reaction. Ki netic parameters of the samples are determined and the results are dis cussed. (C) 1997 Elsevier Science B.V.