In this paper，aiming at the problem that the sintering air permeability of medium silicon low aluminum hematite concentrate powder ( OI) in the actual sintering production ore blending structure of a domestic iron and steel enterprise is not spherical，resulting in poor sintering air permeability and the imminent depletion of high silicon medium aluminum hematite powder ( OD) ，three new varieties of iron ore powder ( OA，OB，OC) are taken as the object to study their alternatives. Firstly，its chemical composition，particle size characteristics and other room temperature characteristics are analyzed. Secondly，the difference between its high temperature characteristics and OD & OI iron ore powder is clarified， and the correlation between the high temperature characteristics of iron ore powder and the basic physical and chemical properties is established. Finally，the sinter pot test design is guided according to the results of the micro-sintering test，and based on the results of the sinter pot test to investigate the changes of the output and quality of sinter after replacing OD & OI iron ore powder with different proportions of new varieties of ore. The results show that it is feasible to replace OD and OI iron ore powder with new varieties of ore. When replacing OD ore，the “one-to-one”ore blending scheme of “OC-OD”is adopted，the yield of sinter could be maintained at 75. 67% ，the drum index is 70. 65% ，the vertical sintering speed is increased to 25. 93 mm/min，and the solid fuel consumption is only increased by 0. 52 kg /t compared with the reference group，and the yield and quality are maintained at a good level. Compared with the reference group，the vertical sintering speed is increased by 1. 01 mm/min，the utilization coefficient is increased to 1. 31 t /( m² ·h) ，the solid fuel consumption is controlled at a low level of 53. 91 kg /t，the yield rate is 75. 05% ，the drum index is 70. 67% ，and the comprehensive index of the sinter pot is significantly optimized.