To determine the temperature range of iron ore reduction

the mixture of Datong bituminite and iron ore powder was reduced

and this process was measured by non-isothermal thermogravimetry.Gas product was analyzed by Fourier transform infrared spectroscopy(TG-FTIR) and solid one by X-ray diffraction(XRD）.The conversion

reduction fraction of iron ore and phase composition of solid product were calculated quantitatively for each stage.For comparison

the reduction behavior of the iron ore with Datong bituminite

Shenmu lignite or Yangquan anthracite was further studied by the non-isothermal TG technique.The results showed that the mixture of the iron ore and the Datong bituminite exhibited better redox response at relatively low temperatures(800—950℃) than the other two mixtures.At higher temperatures(1000—1100℃)

the sample of the iron ore and Shenmu lignite also showed good reducibility.