A large amount of zinc-containing dust sludge will be produced during the iron and steel smelting process (iron-making,steel-making),which is not suitable for direct return to the iron-making process,and is generally treated by long-term storage in the plant or outsourcing. With the in-depth promotion of new concepts such as “no solid waste leaving the factory”,“circular economy” and “green manufacturing” in China’s iron and steel enterprises,it has become an inevitable trend to adopt new rotary kiln technology to directly dispose of zinc-containing dust sludge in iron and steel plants. The process flow of the traditional rotary kiln to dispose of zinc-containing dust sludge is introduced,and its shortcomings are analyzed from such aspects as raw materials,production process and product characteristics,and a new rotary kiln disposal technology,using such innovative technologies as raw material pelleting and multi-nozzle grading air intake,is proposed,which significantly improves the disposal capacity of the rotary kiln and alleviates the ring forming of the rotary kiln,followed by stable operation in Yongfeng iron and steel,Bayi iron and steel,Chengyu environmental protection,and other iron and steel enterprises and environmental protection companies,as well as good economic and social benefits.This technology has application prospect in the co-disposal of multiple solid wastes and dry cooling of hot slag.