本文關(guān)鍵詞： 球磨機(jī) 轉(zhuǎn)速調(diào)控 填補(bǔ) 磨礦效率 DEM仿真分析 Matlab/Simulink仿真　出處：《江西理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：球磨機(jī)是礦山選礦設(shè)備中廣泛使用的必不可少的機(jī)械,球磨機(jī)的磨礦效率和能源、材料消耗決定著整個(gè)選礦廠的生產(chǎn)能力和經(jīng)濟(jì)效益。實(shí)際生產(chǎn)中,球磨機(jī)筒體襯板及球介的消耗量占生產(chǎn)費(fèi)用中較大的比例,因此對(duì)球磨機(jī)的深入研究是十分有必要和價(jià)值的。影響球磨機(jī)磨礦效率的因素有很多,如襯板材料、襯板型式、磨球的配比、筒體轉(zhuǎn)速、填充率、被磨礦粒等等。當(dāng)前,選礦廠普遍使用轉(zhuǎn)速固定的球磨機(jī),固定轉(zhuǎn)速下球磨機(jī)襯板的磨損會(huì)引起磨礦效率下降。本文以球磨機(jī)筒體轉(zhuǎn)速、不同磨損量的襯板為研究對(duì)象,在某選礦廠生產(chǎn)現(xiàn)場(chǎng)采集相關(guān)數(shù)據(jù)和查閱大量相關(guān)影響磨礦因素文獻(xiàn)的基礎(chǔ)上,開(kāi)展以下方面的研究:(1)對(duì)單個(gè)球介的受力情況以及運(yùn)動(dòng)狀況、球介作圓周和拋落運(yùn)動(dòng)狀態(tài)的運(yùn)動(dòng)軌跡進(jìn)行分析并推導(dǎo)球介的運(yùn)動(dòng)軌跡方程;研究球介的沖擊特性、沖擊位置和沖擊角度、沖擊能量及自轉(zhuǎn)速度等參數(shù)對(duì)軌跡的影響;建立計(jì)算襯板壽命的數(shù)學(xué)方程,分析襯板的結(jié)構(gòu)、襯板的受力情況和襯板表面的參數(shù)對(duì)襯板壽命的影響。(2)運(yùn)用DEM軟件進(jìn)行球磨機(jī)磨礦數(shù)值的仿真實(shí)驗(yàn)研究。以襯板磨損量和球磨機(jī)筒體轉(zhuǎn)速為變量,設(shè)定三種仿真方案研究調(diào)節(jié)轉(zhuǎn)速填補(bǔ)不同磨損量襯板對(duì)磨礦效率的影響。保證除轉(zhuǎn)速以外其它因素不變的情況下,改變筒體轉(zhuǎn)速,對(duì)比分析其磨礦效率;保證球磨機(jī)筒體轉(zhuǎn)速固定不變的情況下,導(dǎo)入不同磨損量的襯板,對(duì)比分析其磨礦效率;不同磨損量的襯板結(jié)合相應(yīng)的轉(zhuǎn)速,對(duì)比其磨礦效率。仿真結(jié)果證實(shí)了微調(diào)球磨機(jī)筒體轉(zhuǎn)速可有效解決固定轉(zhuǎn)速下球磨機(jī)襯板的磨損引起磨礦效率下降的問(wèn)題。(3)研究球磨機(jī)筒體轉(zhuǎn)速調(diào)節(jié)的系統(tǒng)設(shè)計(jì)。球磨機(jī)轉(zhuǎn)速調(diào)節(jié)的實(shí)質(zhì)在于驅(qū)動(dòng)電機(jī)轉(zhuǎn)速的調(diào)控。以Matlab軟件為平臺(tái),永磁同步電機(jī)為對(duì)象,結(jié)合正弦波的三相永磁同步電動(dòng)機(jī)的數(shù)學(xué)模型和轉(zhuǎn)子磁場(chǎng)定向矢量控制原理,建立永磁同步電機(jī)轉(zhuǎn)速在Simulink中的仿真控制模型,從而實(shí)現(xiàn)筒體轉(zhuǎn)速在Matlab/Simulink軟件中的模擬控制仿真,理論上驗(yàn)證轉(zhuǎn)速調(diào)控的可行性。
[Abstract]:The ball mill is widely used in mining mineral processing equipment in essential machinery, grinding efficiency and energy consumption of the ball mill, the material determines the production ability of the concentrator and the economic efficiency. In actual production, the consumption of ball mill tube body lining board and dielectric ball accounted for a larger proportion of production costs, so the research of ball mill it is very necessary and valuable. There are many factors that affect the ball mill grinding efficiency, such as liner material, liner plate type, grinding ball ratio, cylinder speed, filling rate, by grinding grain and so on. At present, ore dressing plant commonly used ball mill speed fixed, fixed speed ball mill lining wear the plate caused by the grinding efficiency decreased. Based on the ball mill lining plate cylinder speed, different amount of wear as the research object, in the field of production of a concentrator to collect data and access to a large number of related factors affecting grinding literature base On the basis, to carry out the following research: (1) for a single ball mediated force and movement of the ball, and throw the circular dielectric trajectory falling motion state is analyzed and derived the trajectory equation of ball impact behavior of spherical dielectric; dielectric, impact position and impact angle, impact energy and the rotation speed on the trajectory; establish a mathematical equation for calculating the lining life, analysis of lining structure, lining plate impact force and lining surface parameters of the lining life. (2) the simulation experiment of ball mill grinding by using DEM software. The numerical liner wear the amount and speed of mill cylinder as the variable, set three kinds of simulation methods of adjusting speed fill different wear effect of liner on grinding efficiency. In addition to ensure speed than other factors unchanged, change the cylinder speed, comparative analysis of the grinding efficiency; guarantee The ball mill cylinder speed is fixed, the introduction of various wear lining plate volume, comparative analysis of the grinding efficiency; liner wear is different with the corresponding speed, comparing the grinding efficiency. Simulation results show that the fine ball mill cylinder speed can effectively solve the wear fixed speed ball mill lining plate caused by the grinding efficiency is lowered. (3) the system design of ball mill cylinder speed regulation. The speed regulation is the essence of the ball mill drive motor speed regulation. Based on Matlab software platform, the permanent magnet synchronous motor as the research object, combined with the mathematical model of three-phase sine wave permanent magnet synchronous motor and rotor flux oriented vector control principle and the establishment of permanent magnet synchronous motor speed control in the Simulink simulation model, so as to realize the control simulation in the Matlab/Simulink software in the cylinder speed, verify speed control. Feasibility.

【學(xué)位授予單位】：江西理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD453

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 蘇興強(qiáng);周魯生;段其福;;金屬磁性襯板應(yīng)用進(jìn)展[J];金屬礦山;2006年03期

2 韓燕;門清毅;;基于ANSYS的球磨機(jī)回轉(zhuǎn)體模態(tài)分析[J];金屬礦山;2010年05期

3 蔣潤(rùn)科,劉俊鳳;球磨機(jī)三種襯板的特點(diǎn)與比較[J];礦山機(jī)械;2002年07期

4 黃河;;球磨機(jī)襯板材質(zhì)綜述[J];礦山機(jī)械;2010年14期

5 定治明;劉靜;魯修宇;李平生;高新平;;球磨機(jī)襯板材料的發(fā)展概況及選材要點(diǎn)[J];礦山機(jī)械;2010年19期

6 章橋新;李濤;余莎;姚一明;劉蓉;;基于磨損的球磨機(jī)襯板壽命模型的研究[J];礦山機(jī)械;2011年05期

7 蔡改貧;馬中立;姜志宏;;基于EDEM新型立磨機(jī)工作參數(shù)數(shù)值模擬研究[J];機(jī)械設(shè)計(jì)與制造;2013年01期

8 張成;王富東;李勝寧;楊丹明;;基于MATLAB/Simulink的永磁同步電機(jī)矢量控制[J];蘇州大學(xué)學(xué)報(bào)(工科版);2011年03期

9 胡勵(lì);胡國(guó)明;萬(wàn)卉;劉牧群;陳金鑫;;球磨機(jī)工作參數(shù)的離散元法分析與改進(jìn)[J];武漢大學(xué)學(xué)報(bào)(工學(xué)版);2010年06期

10 張立秋;朱雪納;;淺析磨機(jī)臨界轉(zhuǎn)速的確定[J];有色礦冶;2009年06期

相關(guān)碩士學(xué)位論文 前1條

1 俞志文;微型電動(dòng)汽車用直流無(wú)刷電機(jī)的驅(qū)動(dòng)器設(shè)計(jì)[D];上海交通大學(xué);2010年

，

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