Low-silicon and low-alkalinity sintering can improve the iron grade of sinter, but it will deteriorate the quality of sinter. The sintering raw materials from Lianyuan Iron & Steel Co., Ltd. are used as the research object. The feasibility and lower limit of low-silicon and low-alkalinity sintering are studied from such two aspects as theory and sinter pot test. The results show that the sintering liquid phase quantity is greatly affected by alkalinity and SiO₂ mass fraction, and the liquid phase generation of sintering compound is linearly related to the sinter tumbler strength. By optimizing the blending and changing the mass fraction of the adhesion powder and the liquid phase generation capacity in the compound, the total amount of liquid phase generation in the compound can be unchanged. Theoretical analysis and sinter pot test show that low SiO₂ mass fraction sintering can be achieved, but low-alkalinity sintering cannot be achieved, because low-alkalinity sintering will reduce the liquid phase generation capacity of adhesion powder. Low silicon sintering can reduce the SiO₂ mass fraction from 5.0% to 4.6%, increase the iron grade of the sinter by 0.62%, reduce flux consumption by 8.90 kg/t, and the microstructure of the low-silicon sintering product is consistent with the benchmark product, and the metallurgical performance is comparable to the benchmark product.