Development of Burden Distribution Simulation Model for the Bell-less Top in a Large Blast Furnace and Its Application

Abstract

The burden distribution model was indispensable so as to ensure smooth blow-in and stable operation with high productivity of Keihin No. 1 blast furnace, which is one of the largest blast furnaces with bell-less top. On the basis of the full scale model and 1/10 scale model experiments, the effect of enlargement of throw diameter on burden profile was analyzed. The behavior of the discharged material from the lower banker was also investigated. Considering these influences, the burden distribution model for Keihin No. 1 blast furnace was constructed. It has been successfully applied for the operation of Keihin No. 1 blast furnace with high productivity.