Simulation of particle flow in a bell-less type charging system of a blast furnace using the discrete element method--颗粒学报PARTICUOLOGY

Zhang, J., Qiu, J., Guo, H., Ren, S., Sun, H., Wang, G., & Gao, Z. (2014). Simulation of particle flow in a bell-less type charging system of a blast furnace using the discrete element method. Particuology, 16, 167–177. https://doi.org/10.1016/j.partic.2014.01.003

Simulation of particle flow in a bell-less type charging system of a blast furnace using the discrete element method

Jianliang Zhang, Jiayong Qiu^*, Hongwei Guo, Shan Ren, Hui Sun, Guangwei Wang, Zhengkai Gao

School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

10.1016/j.partic.2014.01.003

Volume 16, October 2014, Pages 167-177

Received 16 September 2013, Revised 31 December 2013, Accepted 5 January 2014, Available online 23 March 2014.

E-mail: qiujiayong0902@163.com; qjy0911@126.com

Highlights

• A 3D DEM model was developed to analyze particle flow and segregation during charging process.

• Burden falling trajectories were obtained using laser grid method.

• Radial segregation index was used to quantify size segregation in the heap.

• Segregation of small and large particles is usually more obvious than that of medium sized ones.

Abstract

A three-dimensional model was established by the discrete element method (DEM) to analyze the flow and segregation of particles in a charging process in detail. The simulation results of the burden falling trajectory obtained by the model were compared with the industrial charging measurements to validate the applicability of the model. The flow behavior of particles from the weighing hopper to the top layer of a blast furnace and the heaping behavior were analyzed using this model. A radial segregation index (RSI) was used to evaluate the extent of the size segregation in the charging process. In addition, the influence of the chute inclination angle on the size segregation and burden profile during the charging process was investigated.

Graphical abstract

Keywords

Discrete element method; Blast furnace; Bell-less charging system; Granular flow; Size segregation

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