高炉低料线的危害_高炉料流轨迹的数学模型.pdf.pdf 全文免费在线阅读

  本文关键词：高炉料流轨迹的数学模型，，由笔耕文化传播整理发布。

网友lxydx近日为您收集整理了关于高炉料流轨迹的数学模型.pdf的文档，希望对您的工作和学习有所帮助。以下是文档介绍：高炉料流轨迹的数学模型 朱清天 程树森 北京科技大学冶金与生态工程学院,北京100083摘要针对目前高炉料流轨迹计算的不足,本模型考虑了颗粒在空区下落过程中受重力、浮力及煤气曳力的作用,计算了炉料颗粒在溜槽和空区下落等阶段的运动轨迹.通过探讨不同炉料(焦炭、烧结矿、球团矿)在其粒径范围内的布料半径变化及煤气的曳力大小,分析了曳力对炉料落点的影响规律.结果表明:精确计算料流轨迹必须考虑煤气曳力的影响,不同密度、粒径及形状系数的颗粒在料面上落点各不相同, 炉顶煤气流分布将影响高炉炉料的径向分布.关键词高炉;装料;料流轨迹;落点;数学模型分类号TF542.5Mathematical model of burden trajectory in a blast furnaceZHU Qingtian, CHENG ShusenMetallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083. ChinaABSTRACT Grain gravity, buoyancy and gas drag were taken into consideration in burden trajectory calcula-tion and the movement trajectory of a particle in chute and freeboard puted. The influencing laws of gasdrag on the landing point were analyzed according to the discussion about the variation of charging radius withdifferent burdens in their range of grain diameter and the percent of gas drag. It is shown that the effect of gasdrag should be considered for the precise calculation of burden trajectory, the landing points of particles are notthe same because of their different density, size and shape factor, and burden distribution is influenced by thedistribution of top gas flow.KEY WORDS blast furnace; charging; burden trajectory; landing point; mathematical model

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  本文关键词：高炉料流轨迹的数学模型，由笔耕文化传播整理发布。