采用三维离散元法对不同弹性模量条件下,5000m3高炉内的炉料的运动行为进行了研究.发现,当弹性模量取0.06GPa时,炉料颗粒的变形量超过了自身半径的1/2,炉身处发生严重的混料现象,炉缸内焦炭颗粒发生堆积,无焦空间减小,而且计算在100步以后自动终止.而当弹性模量在10～0.6GPa范围内变化时,炉身段料层倾角随弹性模量的减小而增大,高炉下部的焦炭速度过渡区随弹性模量的减小而缩小,死料柱有所增高,但下部炉料颗粒间的法向应力会随着弹性模量的减小而增大.此外,弹性模量的减小导致了炉料颗粒间的瞬态滑动行为减少.但弹性模量的变化并没有改变高炉内炉料的运动特征,其运动仍然是由稳态下降运动与瞬态运动组成.
参考文献
| [1] | Cundall P A;Strack O D L .A Discrete Numerical Model for Granular Assemblies[J].Geotechnique,1979,29(01):47. |
| [2] | Allert Tjipke ADEMA;Yongxiang YANG;Rob BOOM .Discrete Element Method-Computational Fluid Dynamic Simulation of the Materials Flow in an Iron-making Blast Furnace[J].ISIJ International,2010(7):954-961. |
| [3] | Zongyan ZHOU;Helping ZHU;Aibing YU;Paul ZULLI .Numerical Investigation of the Transient Multiphase Flow in an Ironmaking Blast Furnace[J].ISIJ International,2010(4):515-523. |
| [4] | Hiroshi MIO;Satoshi KOMATSUKI;Masatoshi AKASHI .Effect of Chute Angle on Charging Behavior of Sintered Ore Particles at Bell-less Type Charging System of Blast Furnace by Discrete Element Method[J].ISIJ International,2009(4):479-486. |
| [5] | Shinichi YUU;Toshihiko UMEKAGE;Shinroku MATSUZAKI;Masatomo KADOWAKI;Kazuya KUNITOMO .Large Scale Simulation of Coke and Iron Ore Particle Motions and Air Flow in Actual Blast Furnace[J].ISIJ International,2010(7):962-971. |
| [6] | Zhengyun FAN;Shungo NATSUI;Shigeru UEDA;Tianjun YANG;Junya KANO;Ryo INOUE;Tatsuro ARIYAMA .Transient Behavior of Burden Descending and Influence of Cohesive Zone Shape on Solid Flow and Stress Distribution in Blast Furnace by Discrete Element Method[J].ISIJ International,2010(7):946-953. |
| [7] | 杨述武.普通物理实验[M].北京:高等教育出版社,2002 |
| [8] | 范正赟,张建良,蒋海冰,杨天钧,有山达郎,王传琳.高炉圆周方向焦炭非均-消耗条件下固体流研究[J].北京科技大学学报,2010(10):1327-1332. |
| [9] | Shungo NATSUI;Shigeru UEDA;Zhengyun FAN .Characteristics of Solid Flow and Stress Distribution Including Asymmetric Phenomena in Blast Furnace Analyzed by Discrete Element Method[J].ISIJ International,2010(2):207-214. |
| [10] | 王泳嘉;邢纪波.离散单元法及其在岩土力学中的应用[M].沈阳:东北工学院出版社,1991 |
| [11] | 魏群.散体单元法的基本原理数值方法及程序[M].北京:科学出版社,1991 |
| [12] | Minoru A;Yasuo O .Determination of Young's Modulus and Poisson Ratio of Lump Ores[J].Tetsu To Hagane-Journal of the Iron and Steel Institute of Japan,1983,69(07):739. |
| [13] | ISIJ and JSPS 54 Committee.Physical and Chemical Data Book for Iron-and Steelmaking (Ironmaking)[M].Tokyo:Nissei Company Press,2006 |
| [14] | 神原健二郎;刘晓侦.高炉解体研究[M].北京:冶金工业出版社,1980 |
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