Abstract: Under the same reduction roasting condition and quantity of additive， a systematic research on the effect of volatile component in coalradicle reductant on high phosphorusoolitic hematite of Western Hubei in direct reduction roasting process was done， specifically on minerals containing iron and phosphorus. This study tries to elaborate preliminarily on the mechanism of volatile component in coalradicle by XRD and SEM. The results show that volatile component in coal is conducive to the increase of iron recovery while adverse to the decrease of phosphorus. Gangue minerals newly generated in roasted product are different when using two types of raw coals processed by dry distillation at high temperature as reductants. Moreover， complex reactions occur between ironcontaining minerals and chamosite or quartz in raw ore. As a result， most phosphoruscontaining minerals in raw ore still exist in the form of fluorapatite， but some will still take part in reduction roasting reaction.

Key words: highphosphorus oolitic hematite, direct reduction roasting, volatile, fixed carbon, reductant