【摘要】：立式攪拌球磨機(jī)作為一種重要的細(xì)磨甚至超細(xì)磨設(shè)備,廣泛應(yīng)用于選礦、涂料加工以及藥物研磨等領(lǐng)域。據(jù)不完全統(tǒng)計(jì),各大礦業(yè)生產(chǎn)企業(yè)年總能耗約占全國能源消費(fèi)量的3.5%以上。立式攪拌球磨機(jī)作為一種主要的磨礦設(shè)備,能量消耗量巨大。因此節(jié)能減排、提高能量的利用率成為磨礦設(shè)備發(fā)展的新方向。對(duì)立式攪拌球磨機(jī)的節(jié)能優(yōu)化研究,通常從磨機(jī)的結(jié)構(gòu)和工作參數(shù)兩個(gè)方面進(jìn)行�，F(xiàn)階段針對(duì)立式攪拌球磨機(jī)攪拌器結(jié)構(gòu)和傳動(dòng)裝置以及磨機(jī)工作參數(shù)的研究已經(jīng)較為成熟,但針對(duì)磨機(jī)研磨筒結(jié)構(gòu)的研究卻相對(duì)較少。因此,本文以立式攪拌球磨機(jī)的研磨筒為研究對(duì)象,通過理論和實(shí)驗(yàn)驗(yàn)證相結(jié)合的方法,對(duì)研磨筒結(jié)構(gòu)做了如下內(nèi)容的研究:(1)通過對(duì)立式攪拌球磨機(jī)節(jié)能優(yōu)化過程中存在的相關(guān)問題進(jìn)行研究,明確了對(duì)研磨筒結(jié)構(gòu)研究的意義。根據(jù)立式攪拌球磨機(jī)研磨筒結(jié)構(gòu)的發(fā)展和研究現(xiàn)狀,確立了論文的主要內(nèi)容和整體的技術(shù)方案。(2)通過對(duì)研磨筒內(nèi)介質(zhì)球的運(yùn)動(dòng)機(jī)理的研究,得出位于攪拌器上以及研磨筒環(huán)形研磨區(qū)內(nèi)的介質(zhì)運(yùn)動(dòng)方程以及相關(guān)的分析結(jié)果。而對(duì)研磨筒內(nèi)部結(jié)構(gòu)的分析,發(fā)現(xiàn)研磨筒內(nèi)部結(jié)構(gòu)對(duì)介質(zhì)球的運(yùn)動(dòng)軌跡具有極大影響。(3)針對(duì)立式攪拌球磨機(jī)磨礦范圍和破碎行為進(jìn)行研究,優(yōu)化磨機(jī)的能量轉(zhuǎn)化率計(jì)算方法。(4)針對(duì)研磨筒可能的結(jié)構(gòu)形式進(jìn)行分析,確定出截面為正多邊形研磨筒、內(nèi)襯螺旋條研磨筒和波形研磨筒三大類筒形。利用EDEM軟件進(jìn)行仿真研究,確定各大類研磨筒結(jié)構(gòu)中磨礦效果較好的三種筒形結(jié)構(gòu),并分別與普通研磨筒進(jìn)行磨礦實(shí)驗(yàn)對(duì)比,驗(yàn)證仿真結(jié)果的可靠性和準(zhǔn)確性。并對(duì)三種較好研磨筒結(jié)構(gòu)進(jìn)行橫向的磨礦實(shí)驗(yàn)對(duì)比,得出三大類研磨筒結(jié)構(gòu)中磨礦性能最好即結(jié)構(gòu)最優(yōu)的筒形結(jié)構(gòu)。(5)以最終選定的研磨筒為研究對(duì)象,利用EDEM軟件對(duì)其研磨筒內(nèi)部具體結(jié)構(gòu)參數(shù)進(jìn)行優(yōu)化研究,得出其合理的內(nèi)部結(jié)構(gòu)參數(shù)。并利用響應(yīng)面分析方法對(duì)其主要工作參數(shù)進(jìn)行分析,對(duì)最終選定的研磨筒在磨礦時(shí)的工作參數(shù)進(jìn)行優(yōu)化研究,確定出該研磨筒結(jié)構(gòu)對(duì)應(yīng)的最佳工作參數(shù)。
[Abstract]:As an important fine grinding and even ultrafine grinding equipment, vertical mixing ball mill is widely used in mineral dressing, coating processing and pharmaceutical grinding. According to incomplete statistics, the annual total energy consumption of the major mining enterprises accounts for more than 3.5% of the national energy consumption. As a main grinding equipment, vertical mixing ball mill consumes a great deal of energy. Therefore, energy saving and emission reduction, improving the utilization of energy has become a new direction of the development of grinding equipment. The research on energy saving optimization of opposite agitating ball mill is usually carried out from two aspects of mill structure and working parameters. At present, the research on the agitator structure and transmission device of the vertical ball mill and the working parameters of the mill has been more mature, but the research on the grinding cylinder structure of the mill is relatively less. Therefore, this paper takes the grinding cylinder of the vertical agitating ball mill as the research object, and combines the theory and experiment to verify the method. The main contents of this paper are as follows: (1) the significance of the research on the structure of grinding cylinder is clarified through the research on the problems existing in the process of energy saving optimization of the opposite agitating ball mill. According to the development and research status of the grinding cylinder structure of the vertical mixing ball mill, the main contents of the paper and the overall technical scheme are established. (2) through the study of the motion mechanism of the medium ball in the grinding cylinder, The equation of motion of the medium located on the agitator and the annular grinding zone of the grinding cylinder and the related analysis results are obtained. By analyzing the internal structure of the grinding cylinder, it is found that the internal structure of the grinding tube has a great influence on the motion track of the medium ball. (3) the grinding range and crushing behavior of the vertical agitating ball mill are studied. The energy conversion rate of grinding machine is optimized. (4) based on the analysis of the possible structure of the grinding cylinder, it is determined that the cross section is a regular polygonal grinding cylinder, a spiral lapping cylinder lined with a spiral strip and a corrugated lapping cylinder. In this paper, three kinds of cylindrical structures with better grinding effect are determined by using EDEM software, and the results of grinding experiments are compared with those of common grinding cylinders to verify the reliability and accuracy of the simulation results. Three kinds of better grinding tube structures are compared by transverse grinding experiments, and the cylindrical structure with the best grinding performance is obtained. (5) taking the final grinding cylinder as the research object, the grinding cylinder structure with the best grinding performance is obtained. The specific structure parameters of grinding tube were optimized by EDEM software, and the reasonable internal structure parameters were obtained. The main working parameters are analyzed by using response surface analysis method, and the working parameters of the final selected grinding cylinder in grinding are optimized, and the optimum working parameters corresponding to the structure of the grinding cylinder are determined.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TD453

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