Analysis of traveling behavior of nut coke particles in bell-type charging process of blast furnace by using discrete element method

Hiroshi Mio, Satoshi Komatsuki, Masatoshi Akashi, Atsuko Shimosaka, Yoshiyuki Shirakawa, Jusuke Hidaka, Masatomo Kadowaki, Hirokazu Yokoyama, Shinroku Matsuzaki, Kazuya Kunitomo

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The objective of this paper is to analyze the particle behavior in bell-type charging process of actual blast furnace by using Discrete Element Method (DEM). The circumferential balance of charged mass in the quad-hopper and the effect of the nut coke particle position in the quad-hopper on the traveling behavior and the segregation were discussed. The mass flow rate discharged from the rotating chute was fluctuated with the time, and the peak values gave when the directions of the chute movement became same as the one of the conveyor. It leads to the unbalance of charged particles in each part of the quad-hopper. The nut coke moved to the upward in the sintered ore particle layer during traveling to large bell from the quad-hopper due to the particle segregation, when they were segregated at the bottom of hopper. However their relative positions moved downward when they were segregated at the top, because the time for starting discharging of nut coke became faster. The installation of the damper at the way to the small bell from the hopper affects on the circumferential balance of mass of nut coke. Most of nut coke particles were charged at near the wall of blast furnace, and the small peak of the distribution of its specific charged mass was seen around 3.0 m in the radial distance from the center, it caused by the particle segregation during flowing on the particle layer. The relative radial distribution of the nut coke particles wasn't affected by their positions in the large bell and the total mass. Thus, keeping the circumferential balance of nut coke mass in the large bell is very important. The position of nut coke particle didn't affect on the segregation of sintered ore. The radial distributions of relative charged mass for all conditions were quite similar.

Original languageEnglish
Pages (from-to)1000-1009
Number of pages10
Journalisij international
Volume50
Issue number7
DOIs
Publication statusPublished - Sep 23 2010
Externally publishedYes

Fingerprint

Charging (furnace)
Blast furnaces
Finite difference method
Coke
Hoppers
Charged particles
Ores
Flow rate
Elvitegravir, Cobicistat, Emtricitabine, Tenofovir Disoproxil Fumarate Drug Combination

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Analysis of traveling behavior of nut coke particles in bell-type charging process of blast furnace by using discrete element method. / Mio, Hiroshi; Komatsuki, Satoshi; Akashi, Masatoshi; Shimosaka, Atsuko; Shirakawa, Yoshiyuki; Hidaka, Jusuke; Kadowaki, Masatomo; Yokoyama, Hirokazu; Matsuzaki, Shinroku; Kunitomo, Kazuya.

In: isij international, Vol. 50, No. 7, 23.09.2010, p. 1000-1009.

Research output: Contribution to journalArticle

Mio, H, Komatsuki, S, Akashi, M, Shimosaka, A, Shirakawa, Y, Hidaka, J, Kadowaki, M, Yokoyama, H, Matsuzaki, S & Kunitomo, K 2010, 'Analysis of traveling behavior of nut coke particles in bell-type charging process of blast furnace by using discrete element method', isij international, vol. 50, no. 7, pp. 1000-1009. https://doi.org/10.2355/isijinternational.50.1000
Mio, Hiroshi ; Komatsuki, Satoshi ; Akashi, Masatoshi ; Shimosaka, Atsuko ; Shirakawa, Yoshiyuki ; Hidaka, Jusuke ; Kadowaki, Masatomo ; Yokoyama, Hirokazu ; Matsuzaki, Shinroku ; Kunitomo, Kazuya. / Analysis of traveling behavior of nut coke particles in bell-type charging process of blast furnace by using discrete element method. In: isij international. 2010 ; Vol. 50, No. 7. pp. 1000-1009.
@article{bb0545c6d7dc4e81a44a341834c5bf95,
title = "Analysis of traveling behavior of nut coke particles in bell-type charging process of blast furnace by using discrete element method",
abstract = "The objective of this paper is to analyze the particle behavior in bell-type charging process of actual blast furnace by using Discrete Element Method (DEM). The circumferential balance of charged mass in the quad-hopper and the effect of the nut coke particle position in the quad-hopper on the traveling behavior and the segregation were discussed. The mass flow rate discharged from the rotating chute was fluctuated with the time, and the peak values gave when the directions of the chute movement became same as the one of the conveyor. It leads to the unbalance of charged particles in each part of the quad-hopper. The nut coke moved to the upward in the sintered ore particle layer during traveling to large bell from the quad-hopper due to the particle segregation, when they were segregated at the bottom of hopper. However their relative positions moved downward when they were segregated at the top, because the time for starting discharging of nut coke became faster. The installation of the damper at the way to the small bell from the hopper affects on the circumferential balance of mass of nut coke. Most of nut coke particles were charged at near the wall of blast furnace, and the small peak of the distribution of its specific charged mass was seen around 3.0 m in the radial distance from the center, it caused by the particle segregation during flowing on the particle layer. The relative radial distribution of the nut coke particles wasn't affected by their positions in the large bell and the total mass. Thus, keeping the circumferential balance of nut coke mass in the large bell is very important. The position of nut coke particle didn't affect on the segregation of sintered ore. The radial distributions of relative charged mass for all conditions were quite similar.",
author = "Hiroshi Mio and Satoshi Komatsuki and Masatoshi Akashi and Atsuko Shimosaka and Yoshiyuki Shirakawa and Jusuke Hidaka and Masatomo Kadowaki and Hirokazu Yokoyama and Shinroku Matsuzaki and Kazuya Kunitomo",
year = "2010",
month = "9",
day = "23",
doi = "10.2355/isijinternational.50.1000",
language = "English",
volume = "50",
pages = "1000--1009",
journal = "ISIJ International",
issn = "0915-1559",
publisher = "Iron and Steel Institute of Japan",
number = "7",

}

TY - JOUR

T1 - Analysis of traveling behavior of nut coke particles in bell-type charging process of blast furnace by using discrete element method

AU - Mio, Hiroshi

AU - Komatsuki, Satoshi

AU - Akashi, Masatoshi

AU - Shimosaka, Atsuko

AU - Shirakawa, Yoshiyuki

AU - Hidaka, Jusuke

AU - Kadowaki, Masatomo

AU - Yokoyama, Hirokazu

AU - Matsuzaki, Shinroku

AU - Kunitomo, Kazuya

PY - 2010/9/23

Y1 - 2010/9/23

N2 - The objective of this paper is to analyze the particle behavior in bell-type charging process of actual blast furnace by using Discrete Element Method (DEM). The circumferential balance of charged mass in the quad-hopper and the effect of the nut coke particle position in the quad-hopper on the traveling behavior and the segregation were discussed. The mass flow rate discharged from the rotating chute was fluctuated with the time, and the peak values gave when the directions of the chute movement became same as the one of the conveyor. It leads to the unbalance of charged particles in each part of the quad-hopper. The nut coke moved to the upward in the sintered ore particle layer during traveling to large bell from the quad-hopper due to the particle segregation, when they were segregated at the bottom of hopper. However their relative positions moved downward when they were segregated at the top, because the time for starting discharging of nut coke became faster. The installation of the damper at the way to the small bell from the hopper affects on the circumferential balance of mass of nut coke. Most of nut coke particles were charged at near the wall of blast furnace, and the small peak of the distribution of its specific charged mass was seen around 3.0 m in the radial distance from the center, it caused by the particle segregation during flowing on the particle layer. The relative radial distribution of the nut coke particles wasn't affected by their positions in the large bell and the total mass. Thus, keeping the circumferential balance of nut coke mass in the large bell is very important. The position of nut coke particle didn't affect on the segregation of sintered ore. The radial distributions of relative charged mass for all conditions were quite similar.

AB - The objective of this paper is to analyze the particle behavior in bell-type charging process of actual blast furnace by using Discrete Element Method (DEM). The circumferential balance of charged mass in the quad-hopper and the effect of the nut coke particle position in the quad-hopper on the traveling behavior and the segregation were discussed. The mass flow rate discharged from the rotating chute was fluctuated with the time, and the peak values gave when the directions of the chute movement became same as the one of the conveyor. It leads to the unbalance of charged particles in each part of the quad-hopper. The nut coke moved to the upward in the sintered ore particle layer during traveling to large bell from the quad-hopper due to the particle segregation, when they were segregated at the bottom of hopper. However their relative positions moved downward when they were segregated at the top, because the time for starting discharging of nut coke became faster. The installation of the damper at the way to the small bell from the hopper affects on the circumferential balance of mass of nut coke. Most of nut coke particles were charged at near the wall of blast furnace, and the small peak of the distribution of its specific charged mass was seen around 3.0 m in the radial distance from the center, it caused by the particle segregation during flowing on the particle layer. The relative radial distribution of the nut coke particles wasn't affected by their positions in the large bell and the total mass. Thus, keeping the circumferential balance of nut coke mass in the large bell is very important. The position of nut coke particle didn't affect on the segregation of sintered ore. The radial distributions of relative charged mass for all conditions were quite similar.

UR - http://www.scopus.com/inward/record.url?scp=77956724375&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77956724375&partnerID=8YFLogxK

U2 - 10.2355/isijinternational.50.1000

DO - 10.2355/isijinternational.50.1000

M3 - Article

AN - SCOPUS:77956724375

VL - 50

SP - 1000

EP - 1009

JO - ISIJ International

JF - ISIJ International

SN - 0915-1559

IS - 7

ER -