After only one year of operation,a large number of damage occurred in the furnace belly,waist and lower cool-ing wall of 4#blast furnace in Jiusteel,which has affected the operation and production stability of the blast furnace.Based on the actual production condition of 4#blast furnace after repair,and compared with 3#blast furnace,the causes of cool-ing wall damage are analyzed,and corresponding countermeasures are put forward,aiming at providing basis for alleviating the damage of cooling wall of furnace body and improving the operation of blast furnace.
blast furnaceoperating furnace typecooling wallbrokengas flow distribution