Although bentonite，as the main binder in pellet production，can improve the pelletizing performance and strength of the pellets，the gangue components it contains can lead to a decrease in pellet quality， as well as increase carbon consumption，slag formation，and carbon emissions during the blast furnace smelting. In order to reduce the amount of bentonite， improve the quality of pellets and promote the low-carbon production， in view of the lack of pretreatment process conditions for raw materials in a steel enterprise，a technology on quality improvement and consumption reduction with ore blending optimization and organic composite binder replacement as the core is proposed. By analyzing the physical and chemical properties of six iron concentrates， four ore blending schemes are designed，and the effects of mixing process，bentonite dosage and organic binder type on the strength of the fresh pellets，preheating and roasting behavior and microstructure of pellets are systematically studied. The results show that the pelletizing performance of the mixed ore is poor under the condition without pretreatment，and the bentonite ratio needs to be ≥3.5%. The optimized ore blending scheme(11.5% in mine A and 20% in mine F) is used to reduce the amount of bentonite from 3.5% to 2.5% and 0.02% BASF organic binder is added，and the falling strength of the fresh pellets still meets the production requirements. The compressive strength of the pellets is maintained above 2 600 N/P，the iron grade is increased to 62.12%， and the mass fraction of SiO₂ is decreased to 7.55%. Microstructural analysis shows that the reduction of bentonite can increase the porosity of the pellets (11.65%→15. 62%) ，while the addition of BASF could reduce it to 14.43%，which is conducive to the improvement of strength. This technology can reduce the amount of bentonite by 1.0% without increasing the cost of binder，which can provide a practical technical path for pellets production quality and consumption reduction.