Abstract：The causes of leakage and explosion of dry dusting system for converter steelmaking with semi steelmaking in the early, middle, and late phase of smelting and slag splashing were analyzed. The venting mainly occurred in the open blow phase. According to the flue gas composition changes of the venting explosion and normal blowing, due to blowing later and oxidations insufficient leads to the unburned carbon monoxide and oxygen- enriched enter electrostatic precipitator and mix up in venting conditions. According to the remaining slag operation for semi steel steelmaking leads to blowing later, developed oxygen and nitrogen compound blowing technology. Moreover, standard operation consists of first slag charge adding time, second falling lanc, blown pattern and the species and quantity of slag splashing. The venting times decreased month by month, and decreased to less than 2 times since June, 2013.
2015, Vol. 25 
