In order to reduce the production cost of pellet, the effect on pellet quality of two rich ore powder for sintering, Baca fines and Brazilian mixed fines, is investigated after grinded as raw material for pellet production based on oxidative pellet production process. The results show that, the spherization of these two rich ore powders are lower than those of general pelletizing concentrate powder after grinding, and their static spherization indices are 0.72 and 0.53, respectively; and with the increase of the use ratio, the water required for balling gradually increases, and the falling strength of qualified fresh pellet gradually improves too; the consolidation strength of the two rich ore powders differs from that of general pelletizing concentrate powders under different roasting temperatures, and when the roasting temperature exceeds 1 300 ℃, the consolidation strength deteriorates; when the use of Brazilian mixed fines and Baca fines reached 20% and 30%, respectively, the bursting temperature of fresh pellet significantly reduces. Taking into account the pellet bursting temperature, finished ball strength and reduction performance, the use of finely ground rich ore powder for sintering can be controlled to within 30%.