Non-isothermal thermogravimetric experiments were carried out on two coals with great difference(Xinmi anthracite from Henan

and lignite from Inner Mongolia)and their mixtures.The effects of reaction condition on combustion characteristics and kinetic parameters of the reactions were studied

by analysis on the TG/DTG curves.The results indicate that:coal proportion in the mixtures and heating rate had a significant influence on co-firing properties

and there existed the optimum value of coal fineness and air flow;considering from various aspects

the coal blending ratio was chosen as 7∶3 or 5∶5;with the heating rate of 30mL/min

the coal mixtures had well ignition performance and burnout property

and the reaction activation energy was relatively small

the combustion is violent and stable.