The green and low-carbon smelting technology with more than 50% pelletsPellet charged into the blast furnace was applied in Shougang Jingtang Iron and Steel United Co., Ltd. However, due to the high consumption of calcium bentoniteBentonite as the pelletPellet binder, it is challenging to guarantee the pellet qualityPellet quality for the smooth operationSmooth operation of the blast furnace. To reduce the ratio of bentoniteBentonite, the effects of different high-performance composite bentonitesBentonite on the pellet qualityPellet quality were studied. Results show that high-performance composite bentoniteBentonite B and C exhibit superior balling properties compared to the reference bentoniteBentonite . Furthermore, under the same bentoniteBentonite ratio, high-performance composite bentoniteBentonite B demonstrates higher green ball falling strength than bentoniteBentonite C. With high-performance composite bentonitesBentonite B and C, the bentoniteBentonite ratio could be significantly reduced from 2.3% to 1.0%. Although the compressive strengthCompressive strength of the pelletsPellet decreased with lower bentoniteBentonite ratios, it remains above 3072N/P, meeting the requirements for the blast furnace. Meanwhile, the alkali metalAlkali metals content of the pelletPellet decreases significantly, which was beneficial to reduce the alkali loadAlkali load into the blast furnace and improve the smooth operationSmooth operation, overall efficiency and long life of the blast furnace.