本文關(guān)鍵詞：高爐料流軌跡的數(shù)學(xué)模型，，由筆耕文化傳播整理發(fā)布。

網(wǎng)友lxydx近日為您收集整理了關(guān)于高爐料流軌跡的數(shù)學(xué)模型.pdf的文檔，希望對您的工作和學(xué)習(xí)有所幫助。以下是文檔介紹：高爐料流軌跡的數(shù)學(xué)模型 朱清天 程樹森 北京科技大學(xué)冶金與生態(tài)工程學(xué)院,北京100083摘要針對目前高爐料流軌跡計算的不足,本模型考慮了顆粒在空區(qū)下落過程中受重力、浮力及煤氣曳力的作用,計算了爐料顆粒在溜槽和空區(qū)下落等階段的運動軌跡.通過探討不同爐料(焦炭、燒結(jié)礦、球團礦)在其粒徑范圍內(nèi)的布料半徑變化及煤氣的曳力大小,分析了曳力對爐料落點的影響規(guī)律.結(jié)果表明:精確計算料流軌跡必須考慮煤氣曳力的影響,不同密度、粒徑及形狀系數(shù)的顆粒在料面上落點各不相同, 爐頂煤氣流分布將影響高爐爐料的徑向分布.關(guān)鍵詞高爐;裝料;料流軌跡;落點;數(shù)學(xué)模型分類號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

1

  本文關(guān)鍵詞：高爐料流軌跡的數(shù)學(xué)模型，由筆耕文化傳播整理發(fā)布。