In view of such disadvantages of traditional sintering process as high energy consumption and poor strength, a new process for iron ore powder pelletizing sintering is developed. The results of laboratory sintering cup tests show that: the new process is used in the sintering of ordinary iron ore, the drum strength can be increased from 61.50% to 75.12%, the yield is increased from 67.29% to 85.03%, and the solid energy consumption can be reduced by 43.6% to 44.31 kg/t. As for the laterite nickel ore sintering, the drum strength is increased from 46.27% to 58.66%, the yield is increased from 64.88% to 68.16%, and the utilization coefficient is increased from 1.06 t/(m²·h) to 1.19 t/(m²·h), and the solid energy consumption is reduced up to 110.36 kg/t, about 22.78%. The pelletizing sintering process can promote the formation of composite calcium ferrite, and the obtained finished sinter has low FeO mass fraction, high reduction degree, low reduction pulverization rate, and excellent reduction performance. The new pelletizing sintering process can not only significantly improve sinter production and quality indicators, reduce solid energy consumption and CO₂ emissions, but also have strong adaptability to the type of ore powder, which is conducive to the quality improvement and consumption reduction of traditional sintering production.