并罐式无钟炉顶装料模式对料面炉料分布的影响
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摘要
为研究装料模式对并罐高炉料面炉料分布的影响,建立了国内某5 500 m3实际高炉并罐式无钟炉顶系统全模型,利用离散单元法分别对矿(A)-矿(B)-焦和矿-焦两种装料模式下炉料从矿焦槽运动至料面全过程进行数值计算,对比分析了装料模式对料面炉料分布的影响。结果表明,由于A矿与B矿布入料面时落点轨迹不重合,导致两种装料模式下料面炉料分布不同。在料面径向上,装料模式对料面矿石体积分布和矿焦比分布影响较小。在料面周向上,矿-矿-焦装料模式和矿-焦装料模式下料面矿石体积分布标准差分别为0.133和0.147,矿-矿-焦装料模式和矿-焦装料模式下料面矿焦比分布标准差分别为0.074和0.086,矿-矿-焦装料模式下矿石体积分布和矿焦比分布更均匀。
In order to investigate the influence of charging patterns on the burden distribution of the stock surface in blast furnace with two parallel hoppers,the full model of bell-less top system with two parallel hoppers in actual 5 500 m~3 blast furnace was established,and the motions of burden materials in the cases of the ore(A)-ore(B)-coke charging pattern and the ore-coke charging pattern were calculated by Discrete Element Method,respectively. The effects of charging patterns on the burden distribution of the stock surface were comparative and analyzed. The results show that the burden distribution of the stock surface is different in two different charging patterns,because the burden falling trajectory is not coincident while the ore-A and ore-B are charged into the stock surface. In the radial direction of the stock surface,the influence of charging patterns on the ore volume distribution and the ore/coke ratio distribution of the stock surface is negligible. In the circumferential direction of the stock surface,the standard deviation of the ore volume distribution of the stock surface in the ore-ore-coke charging pattern and the ore-coke charging pattern is 0.133 and 0.147,respectively,and the standard deviation of the ore/coke ratio distribution of the stock surface in the ore-ore-coke charging pattern and the ore-coke charging pattern is 0.074 and 0.086,respectively. The ore volume distribution and the ore/coke ratio distribution of the stock surface is more uniform in the ore-ore-coke charging pattern.
In order to investigate the influence of charging patterns on the burden distribution of the stock surface in blast furnace with two parallel hoppers,the full model of bell-less top system with two parallel hoppers in actual 5 500 m~3 blast furnace was established,and the motions of burden materials in the cases of the ore(A)-ore(B)-coke charging pattern and the ore-coke charging pattern were calculated by Discrete Element Method,respectively. The effects of charging patterns on the burden distribution of the stock surface were comparative and analyzed. The results show that the burden distribution of the stock surface is different in two different charging patterns,because the burden falling trajectory is not coincident while the ore-A and ore-B are charged into the stock surface. In the radial direction of the stock surface,the influence of charging patterns on the ore volume distribution and the ore/coke ratio distribution of the stock surface is negligible. In the circumferential direction of the stock surface,the standard deviation of the ore volume distribution of the stock surface in the ore-ore-coke charging pattern and the ore-coke charging pattern is 0.133 and 0.147,respectively,and the standard deviation of the ore/coke ratio distribution of the stock surface in the ore-ore-coke charging pattern and the ore-coke charging pattern is 0.074 and 0.086,respectively. The ore volume distribution and the ore/coke ratio distribution of the stock surface is more uniform in the ore-ore-coke charging pattern.
引文
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[11]Nag S,Koranne V M.Development of material trajectory simulation model for blast furnace compact bell-less top[J].Ironmaking and Steelmaking,2013,36(5):371.
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[13]TENG Zhao-jie,CHENG Shu-sen,DU Peng-yu,et al.Mathematical model of burden distribution for the bell-less top of a blast furnace[J].International Journal of Minerals,Metallurgy,and Materials,2013,20(7):620.
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[15]赵国磊,程树森,徐文轩,等.高炉中心加焦炉料分布机理及布料方式探讨[J].钢铁,2016,51(6):10.(ZHAO Guo-lei,CHENG Shu-sen,XU Wen-xuan,et al.Mechanism of burden distribution in central coke chargingprocess and exploration on charging pattern in blast furnace[J].Iron and Steel,2016,51(6):10.)
[16]马富涛,张建良,刘云彩.基于人工智能算法的高炉布料数值模拟[J].钢铁,2017,52(6):8.(MA Fu-tao,ZHANG Jian-liang,LIU Yun-cai.BF burden distribution numerical simulation based on genetic algorithm[J].Iron and Steel,2017,52(6):8.)
[17]马财生,任廷志.基于摩擦功原理的高炉布料溜槽磨损分析[J].钢铁,2017,52(1):19.(MA Cai-sheng,REN Ting-zhi.Analysis on wear of chute in blast furnace with bell-less topbased on friction work principle[J].Iron and Steel,2017,52(1):19.)
[18]Yu Y W,Saxén H.Segregation behavior of particles in a top hopper of a blast furnace[J].Powder Technology,2014,262:233.
[19]邱家用,张建良,孙辉,等.并罐式无钟炉顶装料行为的离散元模拟及实验研究[J].应用数学和力学,2014,35(6):598.(QIU Jia-yong,ZHANG Jian-liang,SUN Hui,et al.DEM simulation and experiment investigation of burden distribution in the parallel-hopper bell-less top blast furnace[J].Applied Mathematics and Mechanics,2014,35(6):598.)
[20]邱廷省,吴紧钢,邱小平,等.无料钟并罐装料过程的离散单元模拟[J].计算机与应用化学,2015,32(5):527.(QIU Tingsheng,WU Jin-gang,QIU Xiao-ping,et al.A discrete element method modeling for charging process in a bell-less top with two parallel hoppers[J].Computers and Applied Chemistry,2015,32(5):527.)
[21]Mio H,Kadowaki M,Matsuzaki S,et al.Development of particle flow simulator in charging process of blast furnace by discrete element method[J].Minerals Engineering,2012,33:27.
[22]李超,程树森,赵国磊,等.串罐式无钟高炉炉顶炉料运动的离散元分析[J].过程工程学报,2015,15(1):1.(LI Chao,CHENG Shu-sen,ZHAO Guo-lei,et al.Analysis of particles movement in the serial-hopper bell-less top of blast furnace with discrete element method[J].The Chinese Journal of Process Engineering,2015,15(1):1.)
[23]WU S L,KOU M Y,XU J,et al.DEM simulation of particle size segregation behavior during charging into and discharging from a paul-wurth type hopper[J].Chemical Engineering Science,2013,99:314.
[24]Mitra T,Saxén H.Discrete element simulation of charging and mixed layer formation in the ironmaking blast furnace[J].Computational Particle Mechanics,2016,3(4):541.
[25]Mitra T,Saxén H.Investigation of coke collapse in the blast furnace using mathematical modeling and small scale experiments[J].ISIJ International,2016,56(9):1570.
[26]Nag S,Gupta A,Paul S,et al.Prediction of heap shape in blast furnace burden distribution[J].ISIJ International,2014,54(7):1517.
[27]ZHU H P,YU A B,WU Y H.Numerical investigation of steady and unsteady state hopper flows[J].Powder Technology,2006,170(3):125.
[28]ZHU H P,YU A B.Steady-state granular flow in a 3D cylindrical hopper with flat bottom:macroscopic analysis[J].Granular Matter,2005,7(2):97.
[29]王波,朱锦明,华建明.宝钢1号高炉并罐装入模式的演变[J].炼铁,2016,35(1):20.(WANG Bo,ZHU Jin-ming,HUA Jianming.Evolution of parallel hopper charging mode in Baosteel's No.1 BF[J].Ironmaking,2016,35(1):20.)
[30]朱锦明,徐辉.宝钢一高炉并罐布料模式的优化与探索[C]//2014年全国炼铁生产技术会暨炼铁学术年会.郑州:2014年全国炼铁生产技术会暨炼铁学术年会文集(上),2014:137.(ZHU Jin-ming,XU Hui.Optimization of burden distribution mode of bell-less with parallel hoppers on Baosteel No.1 blast furnace[C]//National Ironmaking Production Technology and Ironmaking Academic Conference 2014.Zhengzhou:The 2014National Ironmaking Production Technology Conference and the Annual Meeting of Ironmaking(Part 1),2014:137.)
[31]王国强,郝万军,王继新.离散单元法及其在EDEM上的实践[M].西安:西北工业大学出版社,2010.(WANG Guo-qiang,HAO Wan-jun,WANG Ji-xin.Discrete Element Method and its Application on EDEM[M].Xi'an:Northwestern Polytechnical University Press,2010.)
[32]ZHANG J L,QIU J Y,GUO H W,et al.Simulation of particle flow in a bell-less type charging system of a blast furnace using the discrete element method[J].Particuology,2014,16:167.
[33]Mio H,Komatsuki S,Akashi M,et al.Analysis of traveling behavior of nut coke particles in bell-type charging process of blast furnace by using discrete element method[J].ISIJ International,2010,50(7):1000.
[34]Mio H,Komatsuki S,Akashi M,et al.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,2009,49(4):479.
[35]Yu Y W,Saxén H.Experimental and DEM study of segregation of ternary size particles in a blast furnace top bunker model[J].Chemical Engineering Science,2010,65(18):5237.
[36]Yu Y W,Saxén H.Effect of DEM parameters on the simulated inter-particle percolation of pellets into coke during burden descent in the blast furnace[J].ISIJ International,2012,52(5):788.
[2]马富涛.高炉偏析布料料面的数值模拟[J].钢铁,2013,48(8):19.(MA Fu-tao.Simulation on charge level for BF segregation feeding[J].Iron and Steel,2013,48(8):19.)
[3]杜鹏宇,程树森,滕召杰.并罐式无钟炉顶布料蛇形偏料的研究[J].北京科技大学学报,2011,33(4):479.(DU Peng-yu,CHENG Shu-sen,TENG Zhao-jie.Research of snakelike deviation in the burden distribution of a parallel-hopper bell-less top[J].Journal of University of Science and Technology Beijing,2011,33(4):479.)
[4]XU J,WU S L,KOU M Y,et al.Circumferential burden distribution behaviors at bell-less top blast furnace with parallel type hoppers[J].Applied Mathematical Modelling,2011,35(3):1439.
[5]ZHAO H T,ZHU M H,DU P,et al.Uneven distribution of burden materials at blast furnace top in bell-less top with parallel bunkers[J].ISIJ International,2012,52(12):2177.
[6]李海峰,韩立浩,游洋,等.加焦方式对气化炉炉料结构和气流分布的影响[J].中国冶金,2016,26(1):6.(LI Hai-feng,HAN Li-hao,YOU Yang,et al.Influence of coke charging patterns on burden structure and gas flow distribution in melter gasifier[J].China Metallurgy,2016,26(1):6.)
[7]徐宽,白明华.竖炉内颗粒、空隙率及气流分布模拟[J].钢铁,2017,52(7):27.(XU Kuan,BAI Ming-hua.Numerical simulation of burden,porosity and gas distributions inside shaft furnace[J].Iron and Steel,2017,52(7):27.)
[8]郭其飞,李家新,杨佳龙,等.大型高炉实用布料模型开发[J].中国冶金,2016,26(8):17.(GUO Qi-fei,LI Jia-xin,YANG Jia-long,et al.Development of a practical model of burden distribution for a large blast furnace[J].China Metallurgy,2016,26(8):17.)
[9]LIANG D,YU Y W,BAI C G,et al.Effect of burden material size on blast furnace stockline profile of bell-less blast furnace[J].Ironmaking and Steelmaking,2009,36(3):217.
[10]YU Y W,BAI C G,ZHANG Z R,et al.Theoretical calculation and validation of burden trajectory in bell-less top blast furnace[J].Ironmaking and Steelmaking,2009,36(7):505.
[11]Nag S,Koranne V M.Development of material trajectory simulation model for blast furnace compact bell-less top[J].Ironmaking and Steelmaking,2013,36(5):371.
[12]REN T Z,JIN X,BEN H Y,et al.Burden distribution for bellless top with two parallel hoppers[J].Journal of Iron and Steel Research,International,2006,13(2):14.
[13]TENG Zhao-jie,CHENG Shu-sen,DU Peng-yu,et al.Mathematical model of burden distribution for the bell-less top of a blast furnace[J].International Journal of Minerals,Metallurgy,and Materials,2013,20(7):620.
[14]ZHAO G L,CHENG S S,XU W X,et al.Comprehensive mathematical model for particle flow and circumferential burden distribution in charging process of bell-less top blast furnace with parallel hoppers[J].ISIJ International,2015,55(12):2566.
[15]赵国磊,程树森,徐文轩,等.高炉中心加焦炉料分布机理及布料方式探讨[J].钢铁,2016,51(6):10.(ZHAO Guo-lei,CHENG Shu-sen,XU Wen-xuan,et al.Mechanism of burden distribution in central coke chargingprocess and exploration on charging pattern in blast furnace[J].Iron and Steel,2016,51(6):10.)
[16]马富涛,张建良,刘云彩.基于人工智能算法的高炉布料数值模拟[J].钢铁,2017,52(6):8.(MA Fu-tao,ZHANG Jian-liang,LIU Yun-cai.BF burden distribution numerical simulation based on genetic algorithm[J].Iron and Steel,2017,52(6):8.)
[17]马财生,任廷志.基于摩擦功原理的高炉布料溜槽磨损分析[J].钢铁,2017,52(1):19.(MA Cai-sheng,REN Ting-zhi.Analysis on wear of chute in blast furnace with bell-less topbased on friction work principle[J].Iron and Steel,2017,52(1):19.)
[18]Yu Y W,Saxén H.Segregation behavior of particles in a top hopper of a blast furnace[J].Powder Technology,2014,262:233.
[19]邱家用,张建良,孙辉,等.并罐式无钟炉顶装料行为的离散元模拟及实验研究[J].应用数学和力学,2014,35(6):598.(QIU Jia-yong,ZHANG Jian-liang,SUN Hui,et al.DEM simulation and experiment investigation of burden distribution in the parallel-hopper bell-less top blast furnace[J].Applied Mathematics and Mechanics,2014,35(6):598.)
[20]邱廷省,吴紧钢,邱小平,等.无料钟并罐装料过程的离散单元模拟[J].计算机与应用化学,2015,32(5):527.(QIU Tingsheng,WU Jin-gang,QIU Xiao-ping,et al.A discrete element method modeling for charging process in a bell-less top with two parallel hoppers[J].Computers and Applied Chemistry,2015,32(5):527.)
[21]Mio H,Kadowaki M,Matsuzaki S,et al.Development of particle flow simulator in charging process of blast furnace by discrete element method[J].Minerals Engineering,2012,33:27.
[22]李超,程树森,赵国磊,等.串罐式无钟高炉炉顶炉料运动的离散元分析[J].过程工程学报,2015,15(1):1.(LI Chao,CHENG Shu-sen,ZHAO Guo-lei,et al.Analysis of particles movement in the serial-hopper bell-less top of blast furnace with discrete element method[J].The Chinese Journal of Process Engineering,2015,15(1):1.)
[23]WU S L,KOU M Y,XU J,et al.DEM simulation of particle size segregation behavior during charging into and discharging from a paul-wurth type hopper[J].Chemical Engineering Science,2013,99:314.
[24]Mitra T,Saxén H.Discrete element simulation of charging and mixed layer formation in the ironmaking blast furnace[J].Computational Particle Mechanics,2016,3(4):541.
[25]Mitra T,Saxén H.Investigation of coke collapse in the blast furnace using mathematical modeling and small scale experiments[J].ISIJ International,2016,56(9):1570.
[26]Nag S,Gupta A,Paul S,et al.Prediction of heap shape in blast furnace burden distribution[J].ISIJ International,2014,54(7):1517.
[27]ZHU H P,YU A B,WU Y H.Numerical investigation of steady and unsteady state hopper flows[J].Powder Technology,2006,170(3):125.
[28]ZHU H P,YU A B.Steady-state granular flow in a 3D cylindrical hopper with flat bottom:macroscopic analysis[J].Granular Matter,2005,7(2):97.
[29]王波,朱锦明,华建明.宝钢1号高炉并罐装入模式的演变[J].炼铁,2016,35(1):20.(WANG Bo,ZHU Jin-ming,HUA Jianming.Evolution of parallel hopper charging mode in Baosteel's No.1 BF[J].Ironmaking,2016,35(1):20.)
[30]朱锦明,徐辉.宝钢一高炉并罐布料模式的优化与探索[C]//2014年全国炼铁生产技术会暨炼铁学术年会.郑州:2014年全国炼铁生产技术会暨炼铁学术年会文集(上),2014:137.(ZHU Jin-ming,XU Hui.Optimization of burden distribution mode of bell-less with parallel hoppers on Baosteel No.1 blast furnace[C]//National Ironmaking Production Technology and Ironmaking Academic Conference 2014.Zhengzhou:The 2014National Ironmaking Production Technology Conference and the Annual Meeting of Ironmaking(Part 1),2014:137.)
[31]王国强,郝万军,王继新.离散单元法及其在EDEM上的实践[M].西安:西北工业大学出版社,2010.(WANG Guo-qiang,HAO Wan-jun,WANG Ji-xin.Discrete Element Method and its Application on EDEM[M].Xi'an:Northwestern Polytechnical University Press,2010.)
[32]ZHANG J L,QIU J Y,GUO H W,et al.Simulation of particle flow in a bell-less type charging system of a blast furnace using the discrete element method[J].Particuology,2014,16:167.
[33]Mio H,Komatsuki S,Akashi M,et al.Analysis of traveling behavior of nut coke particles in bell-type charging process of blast furnace by using discrete element method[J].ISIJ International,2010,50(7):1000.
[34]Mio H,Komatsuki S,Akashi M,et al.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,2009,49(4):479.
[35]Yu Y W,Saxén H.Experimental and DEM study of segregation of ternary size particles in a blast furnace top bunker model[J].Chemical Engineering Science,2010,65(18):5237.
[36]Yu Y W,Saxén H.Effect of DEM parameters on the simulated inter-particle percolation of pellets into coke during burden descent in the blast furnace[J].ISIJ International,2012,52(5):788.