Investigation on the evolution characteristics of bed porous structure during iron ore sintering--颗粒学报PARTICUOLOGY

Wang, J., Ma, P., Meng, H., Cheng, F., & Zhou, H. (2023). Investigation on the evolution characteristics of bed porous structure during iron ore sintering. Particuology, 74, 35-47. https://doi.org/10.1016/j.partic.2022.05.005

Investigation on the evolution characteristics of bed porous structure during iron ore sintering

Jiankang Wang, Pengnan Ma, Hanxiao Meng, Fangzheng Cheng, Hao Zhou ^*

State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, 310027, China

10.1016/j.partic.2022.05.005

Volume 74, March 2023, Pages 35-47

Received 28 March 2022, Revised 21 April 2022, Accepted 6 May 2022, Available online 20 May 2022, Version of Record 6 June 2022.

E-mail: zhouhao@zju.edu.cn

Highlights

• X-ray computed tomography technology was used to analyze pore parameters.

• Pore skeleton structure model was established.

• Absolute permeability of different areas was calculated through simulation.

• Streamline and pressure drop distribution were calculated and analyzed.

• Evolution characteristics of pore structures were analyzed.

Abstract

To better understand the evolution characteristics of bed porous structure during iron ore sintering, X-ray computed tomography scanning technology was used to analyze the pore parameters in different areas of the sintering bed. A pore skeleton structure model was established to study the characteristics of the airflow channels in different zones. The absolute permeability of different areas was calculated through simulation, and the corresponding streamline and pressure drop distribution were analyzed. The results show that the porosity of raw material zone, high-temperature zone, and sintered zone increases gradually, which are 37.69%, 46.41%, and 55.57%, respectively. The absolute permeability calculation results of the raw material zone and sintered zones are 792.49 μm2 and 20560.80 μm2, while the tortuosity is 1.77 and 1.45, respectively. Compared with the raw material zone, the flow streamline in the sintered zone is thicker and denser, the airflow resistance and the pressure drop are minor.

Graphical abstract

Keywords

Flame front; Porous bed structure; Iron ore sintering

文章导读