發(fā)布時間：2018-06-10 13:40

  本文選題：立式雙行星球磨機 + 離散元法�。� 參考：《昆明理工大學》2015年碩士論文

【摘要】：球磨機是一種在物料破碎與粉磨作業(yè)中應用最廣泛的介質運動式粉碎設備,長期以來一直備受國內外研究者的重視,而且隨著現(xiàn)代工業(yè)的發(fā)展,各種新的高能球磨設備不斷涌現(xiàn),但是相關方面的理論研究卻相對滯后。本文以立式雙行星球磨機為研究對象研究了工作參數(shù)對該球磨機粉磨效率的影響,為該類球磨機實際制備粉體時工作參數(shù)的選取以及對其介質運動規(guī)律的分析提供參考依據(jù)。本文首先對國內外球磨機的研究現(xiàn)狀和發(fā)展趨勢進行了概述,對球磨機介質運動理論研究現(xiàn)狀進行了概括,并重點介紹了顆粒離散元法的基礎理論以及在球磨機研究上的應用現(xiàn)狀。對立式雙行星球磨機的工作原理、運動狀況進行了理論分析,對影響球磨介質運動規(guī)律的主要工作參數(shù)及其對磨礦效果的影響機理進行了闡述,對礦石粉碎功耗進行了論述,為后面章節(jié)的離散元數(shù)值模擬仿真和實驗研究提供了理論依據(jù),奠定了理論基礎。其次,以立式雙行星球磨機單位質量的沖擊能量最大為目標,選取介質填充率、介質配比、球料比三個工作參數(shù)及其水平,采用試驗優(yōu)化的方法確定試驗點。利用離散元仿真軟件EDEM建立該球磨機的離散元模型,并對不同試驗點進行數(shù)值模擬仿真,從而獲得該球磨機粉磨礦料過程中的沖擊能量。通過極差分析法和方差分析法對仿真所得的數(shù)據(jù)進行處理分析,并結合介質運動理論,綜合考慮得出立式雙行星球磨機粉磨礦料的最佳工作參數(shù)組合。最后,通過立式雙行星球磨機粉磨鉑鈀礦的實驗,對仿真所得到的最佳工作參數(shù)組合進行實際驗證,得出實驗結果與仿真結果基本一致,從而驗證了顆粒離散元法在立式雙行星球磨機應用的正確性。
[Abstract]:Ball mill is the most widely used medium moving grinding equipment in material crushing and grinding. It has been paid attention to by researchers at home and abroad for a long time, and with the development of modern industry, A variety of new high-energy ball milling equipment are emerging, but the related theoretical research is relatively lagging behind. In this paper, the effect of working parameters on the grinding efficiency of vertical double planet ball mill is studied, which provides a reference for the selection of working parameters and the analysis of the law of medium motion in the actual preparation of this kind of ball mill. In this paper, the research status and development trend of ball mill at home and abroad are summarized, and the research status of media motion theory of ball mill is summarized. The basic theory of particle discrete element method and its application in ball mill are introduced. The working principle and motion state of the opposite-type double planet ball mill are analyzed theoretically. The main working parameters which affect the motion law of the ball milling medium and the mechanism of its influence on the grinding effect are expounded. The power consumption of ore crushing is also discussed. It provides a theoretical basis for the numerical simulation and experimental research of discrete element in the following chapters. Secondly, taking the maximum impact energy per unit mass of vertical double planet ball mill as the target, three working parameters and their levels are selected, such as medium filling ratio, medium ratio and ball / material ratio, and the test points are determined by the method of test optimization. The discrete element model of the ball mill was established by using the discrete element simulation software EDEM, and the impact energy of the ball mill during the grinding process was obtained by numerical simulation of different test points. By means of range analysis method and variance analysis method, the data obtained from simulation are processed and analyzed. Combined with the theory of medium motion, the optimum working parameters combination of grinding ore of vertical double planet ball mill is obtained. Finally, through the experiment of grinding platinum-palladium ore with vertical double planetary ball mill, the optimum working parameter combination obtained by simulation is verified in practice, and the experimental results are basically consistent with the simulation results. The application of particle discrete element method in vertical double planet ball mill is verified.
【學位授予單位】：昆明理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD453

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本文編號：2003410