In this paper, the influence of structural water present in goethite rich ore fines on sinter properties like mean size, RI, RDI, TI, AI, and microstructure was studied. For this three plant sinters with different basicities (A1, A2, and A3) were experimentally produced varying the raw mix. From the study on variable basicity, it is found that increased basicity has good effects on the sinter properties. The desired norms of metallurgical properties for good quality sinter required for large size blast furnace met with increased tumbler index and decreased abrasion index. The RI is also better in highly fluxed sinter A3 and the RDI is low. All these are happening due to the availability of more free time and porosity. The mean-size of sinter also increases with the increase of basicity. The reducibility index and RDI of sinter A2 and A3 appear to be similar although there is a variation in chemistry and basicity, this may be attributed to use of more micro-fines in the raw material of sinter A3. The specific consumption of coke rate is highest for sinter A3 is also due to more micro-fines in raw materials. From the microstructure, it is found that in sinter A1 more magnetite and fewer ferrites are developed in comparison to A2 and A3. The silicoferrites of calcium and aluminium (SFCA) developed in sinter A2 and A3 are acicular in the structure which provides better strength to the sinter. Also, the porosity is more in case of A2 and A3 which can accelerate the reducibility process.