Influence of Charging Parameters on the Burden Flow Velocity and Distribution on the Blast Furnace Chute Based on Discrete Element Method.

The charging parameters at the top of a blast furnace are key factors that influence the burden flow trajectory and burden surface. To analyze the influence of the charging parameters on the burden flow velocity and distribution, a 1:8 bell‐less blast furnace scale discrete element method model is first established. The coordinate transformation method is adopted to obtain the position information of the particles relative to the chute, and a method for calculating the burden flow density based on the number of truncated particles is proposed to determine the burden flow distribution area. The influence of charging parameters, such as the flow valve opening, chute angle, and rotating speed on the burden flow velocity and distribution is analyzed. The results indicate that changing the charging parameters will change the burden flow velocity, and that the chute angle has the greatest influence on the burden flow velocity while the influence of the other two parameters is almost negligible. Increasing the flow valve opening, chute angle and rotating speed will increase the radial movement distance of the burden flow, whereas too large flow valve opening may reduce the radial movement distance. [ABSTRACT FROM AUTHOR]