Analysis of Particle Size Segregation at Bell-less Top of Blast Furnace by Discrete Element Method
The objective of this paper is to analyse the particle size segregation during charging at the bell-less type charging system of the blast furnace. The charging behavior of the sintered ore particle was simulated by using Discrete Element Method (DEM). The sintered ore particles (number of particles: nore=620231) were charged in the hopper, and the coke particles (ncoke=112712) were stacked at the top of blast furnace. The particles in the chute were pressed up against the chute wall with moving toward the outlet because of the centrifugal force of the chute rotation. The strong particle segregation was seen at the outlet; the most of smallest particles were upper area. It was found that the particle motion during flowing the chute was twisted in the simulation. The specific charged mass at charging area increases with increasing the number of charges, and the distribution of charged mass becomes widened toward the center of blast furnace, because the particles slide downward along with the slope of heap. Thus, DEM can give the particle size segregation during charging process of bell-less top in detail, and this is very informative tool for the optimization of charging process .
discrete element method blast furnace bell-less top segregation
Mio Hiroshi Komatsuki Satoshi Hidaka Jusuke Kadowaki Masatomo Matsuzaki Shinroku Kunitomo Kazuya
Research Center for Advanced Science and Technology, Doshisha University, Kyotanabe 610-0321, Kyoto, Department of Chemical Engineering and Materials Science, Doshisha University, Kyotanabe 610-0321, K Environment and Process Technology Center, Nippon Steel Corporation, Futtsu 293-8511, Chiba, Japan
国际会议
The 5th International Congress on the Science and Technology of Ironmaking(第五届国际炼铁科技大会 ICSTI09)
上海
英文
1125-1129
2009-10-20（万方平台首次上网日期，不代表论文的发表时间）