Abstract: Low grade and cheap hematite ore (DMF) was researched for sintering of Cr-bearing vanadium and titanium magnetite (V-Ti-Cr) via sessile drop measuring setup， miniature sintering setup and sintering pot tests. The results showed that DMF has a good fluidity with a wide melting range， a long melting time， and the beginning and ending temperature that liquid generated are low along with a small value of security liquid velocity (0.125mm/min). Therefore， DMF can be used as a matching ore in V-Ti-Cr mixture to make up the disadvantage that V-Ti-Cr sinter owns an insufficient liquid content. Sinter pot tests showed that the optimal additive ratio of DMF is 10%， which is helpful to stabilize the blast furnace operation.

Key words: Cr-bearing vanadium and titanium magnetite, optimization of matching ores, blast furnace, sinter, melting characteristics