Abstract:In order to promote the high-quality development of the iron and steel industry and continuously reduce the energy consumption of the sintering process, based on the characteristics of the sintering process of Ma'anshan Iron and Steel Co., Ltd., the performance evaluation and prediction of sintering ore proportioning is realized by adopting the mutual coupling control technology of basic sintering ore proportioning and process parameters, and the 5‰ hit rate of the obtained solid fuel consumption prediction model is reached by more than 88%. By improving the particle size and distribution of fuel and limestone, the mass fraction range of R and FeO in the upper and lower layers of the sinter cake is reduced by 0.17 and 1.41, and the solid fuel consumption is reduced by 1.09 kg/t year-on-year. When the mass fraction of sinter SiO2 is reduced to about 4.90% and the mass fraction of MgO is reduced from 2.00% to 1.39%, the solid fuel consumption is reduced by 3.24 kg/t. By properly controlling the air distribution of wind box, the utilization factor is increased by 0.021 t/(m2·h) year-on-year, and the solid fuel consumption is reduced by 1.66 kg/t. Using the technology of uniform injection of coke oven gas on the charge level, the consumption of sintered solid fuel is reduced by 3.19 kg/t year-on-year. Using high-temperature steam heating to assist stirring steelmaking sludge and other auxiliary sintering technologies, the solid fuel consumption is reduced by 4.16 kg/t. Through energy-saving ignition furnace technology, sintering intelligent control technology, air leakage monitoring and combustion ratio control technology, the ignition gas consumption and fan power consumption are significantly reduced. Through the application of key synergistic technologies to continuously reduce the energy consumption of the sintering process, the energy consumption (discounted standard fuel) in the sintering process is reduced from 66.36 kg/t to the current 46.17 kg/t, which strongly supports the high-quality development of sintering process technology.