In order to improve the sintering granulating effects of vanadium titano-magnetite concentrate, the effects of water absorbing characteristics of quicklime on the granulation of the vanadium titano-magnetite concentrate are investigated using micro-drum granulation equipment. The results show that there exists great difference for the water absorbing index (WAI) of different kinds of quicklime. With the increase of the WAI, the granulation index (GI), uniformity index (UI), and resistance index of the thermal disintegration (KI) of vanadium titano-magnetite concentrate first increase and then decrease, but the damage index (DI) exhibits the opposite behavior. Compared with medium-titanium and high-titanium vanadium titano-magnetite concentrate, the effects of WAI on the KI and DI are little for low-titanium vanadium titano-magnetite concentrate. Increasing the proportion of quicklime with strong water absorbing capacity is favorable for improving granulating performance, but when the WAI of quicklime is too high, the digestion reaction will be strong and the viscosity increases, which easily leads to "self-reunion" phenomenon and result in flux segregation in mixture. Meanwhile, the proportion of water distributed in the ore particles decreases, the water required for forming the capillary force among the ore particles is insufficient. Therefore, for the quicklime with high WAI, the water content and water adding methods can be adjusted in the granulation process for the flux uniform distribution and appropriate moisture of the ore particles, so as to improve the granulating effect of vanadium titano-magnetite concentrate.