TY - JOUR
T1 - Numerical simulation of coal briquetting process using discrete element method
AU - Ono, Yuya
AU - Ramdzuanny, Mohammad
AU - Matsushita, Yohsuke
AU - Aoki, Hideyuki
AU - Wada, Shohei
AU - Shishido, Takahiro
N1 - Funding Information:
This study is a part of Technology Development for “Ironmaking Process Utilizing Ferro-coke” launched by NEDO (New Energy and Industrial Technology Development Organization) in 2017. NEDO’s partial financing for the project is gratefully appreciated. We also thank Associate Professor Osamu Sasaki and Dr. Harumasa Kano of the Tohoku University Museum for their cooperation and valuable advice in X-ray CT imaging.
Publisher Copyright:
© 2021 The Iron and Steel Institute of Japan.
PY - 2021
Y1 - 2021
N2 - During the production of formed coke from coal, the step of briquetting (compression molding) has strong effects on the structure and strength of the coke. To systematically examine important factors in the briquetting process, this study used the discrete element method to numerically simulate the loading and unloading test of an actual packed bed of coal particles. Changes in the structure inside the packed bed and the stress during compression were evaluated. X-ray CT images showed that the filling ratio was higher near the top of the bed close to the piston. According to the simulation result, this was because of the relatively stronger contact force experienced by individual particles in that part of the packed bed. The simulation also indicated that the frictional force between particles affects the distribution of the contact force acting on them, while the friction force between the particle and container wall especially influences the distributions of the contact force and the filling ratio.
AB - During the production of formed coke from coal, the step of briquetting (compression molding) has strong effects on the structure and strength of the coke. To systematically examine important factors in the briquetting process, this study used the discrete element method to numerically simulate the loading and unloading test of an actual packed bed of coal particles. Changes in the structure inside the packed bed and the stress during compression were evaluated. X-ray CT images showed that the filling ratio was higher near the top of the bed close to the piston. According to the simulation result, this was because of the relatively stronger contact force experienced by individual particles in that part of the packed bed. The simulation also indicated that the frictional force between particles affects the distribution of the contact force acting on them, while the friction force between the particle and container wall especially influences the distributions of the contact force and the filling ratio.
KW - Briquetting
KW - Coal
KW - Discrete element method
KW - Loading and unloading
KW - Stress analysis
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U2 - 10.2355/isijinternational.ISIJINT-2021-272
DO - 10.2355/isijinternational.ISIJINT-2021-272
M3 - Article
AN - SCOPUS:85119984768
SN - 0915-1559
VL - 61
SP - 2737
EP - 2744
JO - Transactions of the Iron and Steel Institute of Japan
JF - Transactions of the Iron and Steel Institute of Japan
IS - 11
ER -