Abstract: High-chromium vanadium-titanium magnetite， reductant coal and binder were mixed and pressed into pellets， and then direct reduction of the pellets was conducted. The effects of coal types， COR， reduction temperature， reduction time and additive on the metallization rate of the reduction products were studied. The minerals of the reduction products were analyzed by X-ray diffraction. The results showed that， under the condition of anthracite， COR of 1.2， temperature of 1350℃， and reaction time of 60min， the maximum metallization rate is 89.80% without any additive. Under the condition of COR of 1.2， temperature of 1250℃， and reaction time of 30min， the maximum metallization rate is 85.27% with 3% CaF₂ addition， showing that the energy consumption of the reduction process can be reduced. When the reduction temperature is lower than 1250℃， the main mineral of the product is metallic iron， and the others are small amounts of Fe₂O₃， Fe₃O₄， Fe₃C， Fe_0.5Mg_0.5Ti₂O₅ and TiO₂. When the temperature is 1300℃， Fe₂VO₄ appeared in the reduction products. When the temperature is 1350℃， (Fe， Cr) and Ti₃O₅ appeared in the reduction products.

Key words: high-chromium vanadium-titanium magnetite, coal-based direct reduction, metallization rate, additive, mineral analysis