Validation of Particle Size Segregation of Sintered Ore during Flowing through Laboratory-scale Chute by Discrete Element Method

元データ 社団法人 日本鉄鋼協会

概要

In this paper, the particle size segregation of sintered ore during flowing through a laboratory-scale chute was investigated to validate the simulated results. The chute angle, installation of a damper at the outlet of the chute or the particle mixing condition were changed. The particles were segregated during flowing through the chute. The smaller particles were at the bottom wall of the chute, and the larger ones were on the smaller particles. The particle discharging velocity decreased with increasing the rolling friction in DEM, and the velocity also became uniformly. The particle discharging behavior under the large rolling friction was not spread, this phenomenon was not comparable with the experimental one. The distributed coefficient of rolling friction was determined by the distribution of rolled distance of sintered ore particle, and every particle in DEM had the different value according to the distribution of rolled distance. This method was effective for the sintered ores flow very much, and the simulated particle size segregation agreed with those of experimental very well, irrespective of chute angle, installation of a damper or particle conditions. Therefore, this simulation has been validated for the analysis of the granular flow in an ironmaking process.

著者

Mio Hiroshi Research Center for Advanced Science and Technology, Doshisha University
Komatsuki Satoshi Department of Chemical Engineering and Materials Science, Doshisha University
Akashi Masatoshi Department of Chemical Engineering and Materials Science, Doshisha University
Shimosaka Atsuko Department of Chemical Engineering and Materials Science, Doshisha University
Shirakawa Yoshiyuki Department of Chemical Engineering and Materials Science, Doshisha University
Hidaka Jusuke Department of Chemical Engineering and Materials Science, Doshisha University
Kadowaki Masatomo Environmental and Process Technology Center, Nippon Steel Corporation
Matsuzaki Shinroku Environmental and Process Technology Center, Nippon Steel Corporation
Kunitomo Kazuya Environmental and Process Technology Center, Nippon Steel Corporation

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