Abstract: Separated granulating sintering is a kind of new sintering process, which makes separately the concentrate ore into high basicity materials and acidic balls, then mix with fuels and returned mine to sinter. Sintering test was made in laboratory to study the effect of basicity and to define the new processing parameter. The results showed that when the basicity is low, the binder phase is based on C2S with viteic and the quality of sinter is good. With the increase of basicity, the content of CaO·TiO2 increases, which has badly destructive effect. When TiO2 is fully created into CaO·TiO2 and the basicity is 2.02, the content of SCFA is high, the liquid phase of sinter covers the pellet, the quantity of sinter is better and its metallurgical properties are improved.