基于离散元法的矿石对溜槽冲击力的模拟研究
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摘要
高炉布料溜槽是合理布料入炉的一个关键设备,所有进入高炉的炼铁原材料(烧结矿,球团矿,焦炭等)和燃料均要冲击布料溜槽。由于炉料对溜槽的冲击力不方便实测,现先假设粉末状炉料从喉管下落并冲击溜槽,采用离散元仿真软件模拟矿石散状颗粒对溜槽的作用,并在数量级上形成对照,结果显示由于颗粒半径值不均匀等原因,在同等批重条件下,模拟值偏大。理论计算和数值模拟结果为溜槽衬板的优化等提供了参考依据。
The blast furnace cloth chute is a key of equipment for reasonable cloth into the furnace. All the iron-making raw materials(sinter, pellets, coke, etc.) and fuel entering the blast furnace certainly impact the cloth chute. Because the impact of charge on chute is inconvenient to measure, it is assumed that the powdered charge falls from the throat and impacts the chute. Then the discrete element simulation software is used to simulate the impact of ore loose particles on chute, and a comparison is formed on the order of magnitude. Due to the uneven particle radius, the analog value is too large under the same batch weight conditions. The numerical simulation results provide a reference for the optimization of the chute liner.
The blast furnace cloth chute is a key of equipment for reasonable cloth into the furnace. All the iron-making raw materials(sinter, pellets, coke, etc.) and fuel entering the blast furnace certainly impact the cloth chute. Because the impact of charge on chute is inconvenient to measure, it is assumed that the powdered charge falls from the throat and impacts the chute. Then the discrete element simulation software is used to simulate the impact of ore loose particles on chute, and a comparison is formed on the order of magnitude. Due to the uneven particle radius, the analog value is too large under the same batch weight conditions. The numerical simulation results provide a reference for the optimization of the chute liner.
引文
[1]聂松辉,刘宏昭,邱爱红,等.高炉布料溜槽抗磨损技术研究[J].钢铁,2007(07):10-14.
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[15]吴敏,许永华,曹卫华.无料钟高炉布料模型设计与应用[J].系统仿真学报,2007(21):5051-5054+5097.
[16]海基科技.基于离散元技术的EDEM软件详解[J].CAD/CAM与制造业信息化,2012(05):36-40.
[17]夏世桐,惠志刚,李帮平.马钢2500m?高炉布料溜槽磨漏的判断及原因分析[J].炼铁,1998(04):10-12.
[18]张建,董志宝,王牧麒,林超.京唐1号高炉布料溜槽的破损分析及改进建议[J].金属材料与冶金工程,2018,46(06):48-52+61.
[19]马财生,任廷志.高炉布料溜槽抗磨损结构设计及优化[J].中国机械工程,2017,28(03):253-257+266.
[20]曾维霆,陈满意.高炉布料器回转支承偏载条件下螺栓疲劳分析[J].重型机械,2018(05):27-31.
[2]滕召杰,程树森,赵国磊.溜槽截面形状及参数对高炉布料的影响[J].钢铁,2014,49(09):34-37+76.
[3]Cundall PA,Strack ODL.A discrete numerical model for granular assemblies[J].Geotech nique,1979,29(01):47-65.
[4]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(01):19-26.
[5]尹冠生主编.理论力学[M].西安:西北工业大学出版社,2000.
[6]刘凯欣,高凌天.离散元法在求解三维冲击动力学问题中的应用[J].固体力学学报,2004,25(02):181-185.
[8]胡励,胡国明.机械产品设计中的颗粒离散元仿真技术及实现[J].机械工程学报,2015,51(14):159.
[9]秦志英,陆启韶.基于恢复系数的碰撞过程模型分析[J].动力学与控制学报,2006(04):294-298.
[10]章广成,向欣,唐辉明.落石碰撞恢复系数的现场试验与数值计算[J].岩石力学与工程学,2011,30(06):1266-1273.
[11]张学东,董为民,汪滋润,等.半自磨机梯形衬板的磨损预测及其优化[J].矿冶,2018,27(03):83-88.
[12]林成城,杜鹤桂.离散单元法高炉无钟炉顶布料模拟研究[J].钢铁,1998(03):6-10.
[13]彭先龙.高炉无钟炉顶布料器及布料理论的研究[D].秦皇岛:燕山大学,2010.
[14]邢继波,王泳嘉.离散元法的改进及其在颗粒介质研究中的应用[J].岩土工程学报,1990(05):51-57.
[15]吴敏,许永华,曹卫华.无料钟高炉布料模型设计与应用[J].系统仿真学报,2007(21):5051-5054+5097.
[16]海基科技.基于离散元技术的EDEM软件详解[J].CAD/CAM与制造业信息化,2012(05):36-40.
[17]夏世桐,惠志刚,李帮平.马钢2500m?高炉布料溜槽磨漏的判断及原因分析[J].炼铁,1998(04):10-12.
[18]张建,董志宝,王牧麒,林超.京唐1号高炉布料溜槽的破损分析及改进建议[J].金属材料与冶金工程,2018,46(06):48-52+61.
[19]马财生,任廷志.高炉布料溜槽抗磨损结构设计及优化[J].中国机械工程,2017,28(03):253-257+266.
[20]曾维霆,陈满意.高炉布料器回转支承偏载条件下螺栓疲劳分析[J].重型机械,2018(05):27-31.