Development of material trajectory simulation model for blast furnace compact bell-less top

Abstract

For effective burden distribution in a blast furnace, correct prediction of material trajectory is very important. A mathematical model based on single particle approach has been developed to estimate the material trajectory in a blast furnace fitted with a compact bell-less top. The model has been validated with in-furnace measurements of Tata Steel's 'F' blast furnace. Results obtained regarding the applicability of the model are promising.

Prediction of Heap Shape in Blast Furnace Burden Distribution

“…'B' -location of the peak of the heap can be determined from the equation of material stream 'cd'. 11) To know, 'A' and 'C', two equations are required. Linear relationship between A and C is one equation and volume balance (Eq.…”

Effect of the Main Feeding Belt Position on Burden Distribution during the Charging Process of Bell-less Top Blast Furnace with Two Parallel Hoppers

“…With the extensive use of the bell-less top system in the blast furnace, many researchers studied the particle movement and size distribution in the charging process of the blast furnace. Some researchers established the single particle mathematical model to predict the burden falling point on stock surface, [1][2][3][4][5][6][7][8] which provided the theoretical guidance for blast furnace operators. Additionally, some investigators studied the size distribution and falling point of particles by small scale experiments.…”

Numerical Investigation of Burden Distribution in a Blast Furnace

“…The trajectory of burden materials from the chute tip is important to determine the impaction point where falling material intersects with the burden surface. Trajectories of particles can be determined by different methods . In the physical experiments done in the present work, the focus is on the effect of different variables such as material types, chute angle, and flow rate.…”

“…Trajectories of particles can be determined by different methods. [32,33] In the physical experiments done in the present work, the focus is on the effect of different variables such as material types, chute angle, and flow rate. The stream midpoints and standard deviations at different heights are compared, and it is concluded that at a fixed chute angle, the trajectory is not affected significantly by flow rate.…”