The parameters of sintering flue gas and the characteristics of DFA-FGD were discussed and the main factors affecting desulphurization efficiency were analyzed.

• 讨论了烧结烟气的工况与密相塔脱硫的工艺及特点，通过中试，研究了影响脱硫率的主要因素，确定了优化参数，验证了密相塔搅拌器的作用。