At present,the main process of sintering production in China is thick layer sintering,which plays a significant role in improving the quality index of sintered minerals,reducing energy consumption and reducing CO2 emissions.Finally,through a series of process improvements,the material layer height of the 3# sintering machine was increased from 720 mm to 860 mm.After the material layer height was increased,the sinter drum strength was increased by 7.08%,the ore return rate was reduced by 0.53%,and the utilization coefficient was increased to more than 1.55 t/(m2·h),solid burn-up was reduced to 57.64 kg/t.