By using the thermogravimetric analyser

the influence of seven different industrial wastes slags upon the ignition temperature of Yungui anthrathetic coal and Fujian anthrathetic coal has been studied

the results show that the second white lime mud

zincilate

steelmaking slag from shougang and LWG have a better effect upon reducing the ignition tempertaure of anthrathetic coal.By enhancing the adding proportion of waste slag

the ignition temperature can further be decreased.Through XRD analysis

it is discovered the composition of waste slag was consisted in different degree of alkaline metals

oxides of alkaline-earth metals

and their salts

several industrial waste slags were mixed according to certain proportioning ratio and being added into anthrathetic coal to burn

the catalytic effect of them was substantially stronger than that of a single waste slag.