对0.8m~3高炉治炼钒钛磁铁矿的有关反应进行了热力学分析。认为碳氮化合物较低价钛优先生成。且主要由钛铁矿还原分解出的TiO_2优先生成。增加CaO不利于碳氮化合物的生成,也不利于它们的分解。SiO_2能在炉缸中氧化碳氮化合物,应重视SiO_2在钒钛铁矿冶炼中的作用。TiO_2的还原和氧化在炉缸中起着传递氧的作用。而CaO影响TiO_2的活度,降低它的氧化功能。 The thermodynamic analysis of the reaction of 0.8m ~ 3 blast furnace vanadium titanomagnetite was carried out. It is believed that carbonitride is lower in preference to titanium. TiO 2, which is mainly decomposed by ilmenite, is preferentially formed. Increasing CaO is not conducive to the formation of carbonitride, nor detrimental to their decomposition. SiO_2 can oxidize carbonitrides in the hearth, and the role of SiO_2 in the smelting of vanadium ilmenite should be emphasized. The reduction and oxidation of TiO 2 plays a role in oxygen transfer in the hearth. CaO affects the activity of TiO 2 and reduces its oxidation function.