Voluminous wastes—coal gangues—have been discharged from innumerable coal mines in China， whichproduce a great deal of environm ent problem ． The coal gangues from the coal mines of Fuxing district．Liaoning Provence，are mainly composed of quartz，illite，and feldspar，with a chemical composition of 6 0 9／5～7O SiOz，13 ～ 18 A1203，belonging to the high—silica／low alumina type coal gangues．This type of coalgangue has been considered difficult to use as a raw material for high—quality cement． A system C3S—C4A3S—C2S—C4AF has been designed in which the alumina of gangue has been taken to form sulphoaluminate(C4A3S)other than aluminate (C3A ) and thus form alite—sulphoaluminate cement． The C3S and C4A3S can be inparagenesis at 13OO～ 1360 C in using BaSO4，CaF2，Cr2O3 in industrial waste as activating agent． The clinkershave been prepared at 1 360 C for 1 hour． The compressive strength of the prepared alite—sulphoaluminatecement has been measured up to 34．7～ 36．8 M Pa and 52． 2～ 54．4 M Pa for 3 and 28 days。respectively．