铁矿烧结过程料层对SO2的吸附作用机制

In iron ores sintering, SO2 in the flue gas originates from the pyrogenation and oxidation of sulphur compounds in iron ores and coke breeze at high temperature,and the sinter mixture has a strong adsorption for SO2. In this paper the adsorption mechanism and kinetics of sinter bed adsorbing SO2 were studied by adopting dynamic methods. The results show that the relationship between adsorptive rate and adsorption capacity (A) agrees linearly with the first order reaction kinetics equation at low adsorption capacity. Meanwhile, at the initial stages of adsorbing, the multiphase reaction of blends adsorbing SO2 is enhanced by an increase of basicity, especially with CaO originating from burnt lime.