Experimental Study on Combustion Characteristics of Ultrafine Pulverized Fujian Anthracite

The combustion characteristics of ultrafine pulverized Fujian anthracite were studied by comparison of ultrafine and conventional pulverized Fujian anthracite. The results show that ultrafine pulverized action has more positive significance to Fujian anthracite which has difficulties in ignition, stabilization and burnout. For Fujian Tianhushan anthracite, as the average coal particle size decreases from 38.002 mu m to 14.877 mu m, the coal's ignition temperature, burnout temperature and activation energy reduced from 620.19 degrees C, 763.40 degrees C and 185.21 kJ/mol to 616.10 degrees C, 739.34 degrees C and 169.25 kJ/mol, respectively, while its comprehensive combustion characteristic index increases from 3.696x10(-5) to 4.087x10(-5).