Numerical simulation optimization and industrial test of sintering ignition process
In order to improve the sinter quality at surface layer,improve the sintering process and reduce the ignition energy consumption,the sintering ignition process is optimized by combining numerical simulation and industrial test.Fluent software is used to simulate the sintering ignition process,and the influence rule of blast furnace gas and combustion air with different preheating temperatures and combustion air with different oxygen content on the ignition temperature is explored.Based on the numerical simulation results,the industrial tests of sintering are carried out for double preheating temperature,oxygen-rich concentration and low negative pressure ignition.The results show that when the preheating temperature is 240 ℃ after the implementation of the double preheating ignition,the ignition temperature is increased to 1 192℃,the strength of the sinter drum is increased to 76.60％,and the yield is increased to 84.44％.When the oxygen content in the combustion air is increased to 25％after the implementation of oxygen-rich ignition,the ignition temperature is increased by 140℃,the unit gas consumption is reduced by 1.25 m3/t,the flue gas volume is reduced by 2 882 m3/h,the drum strength is increased to 78.44％,and the ore return radio is reduced to 14.21％.When the ignition negative pressure is 8.25 kPa after the implementation of low negative pressure ignition,the unit consumption of ignition gas is decreased by 1.07 m3/t,the drum strength is increased by 1.16％,and the ore return rate is decreased by 3.72％.
万方数据
维普
