發(fā)布時間：2018-06-13 20:13

  本文選題：X射線 + 選煤廠��； 參考：《安徽理工大學(xué)》2017年碩士論文

【摘要】：煤和矸石的分選始終是煤炭資源開發(fā)利用首先要解決的問題,綠色選煤要求對環(huán)境的影響盡可能的小,對于粒度較小(50mm)的煤采用重介旋流器入洗很流行,其中極細的煤(0.045mm)可以通過浮選的方式處理,但對于大塊的煤和矸石,現(xiàn)在仍有很多選煤廠采用傳統(tǒng)方式,通過選矸工在原煤準(zhǔn)備環(huán)節(jié)的皮帶上通過生產(chǎn)經(jīng)驗,付出幸苦的勞動,將大塊的矸石和雜物去除。這個環(huán)節(jié)是很重要的,在煤和矸石分選前將大塊矸石去除,可以大大降低入選原煤的灰分,節(jié)約了破碎分選過程的能耗,提高生產(chǎn)效率。論文通過對來自淮北楊莊煤場的煤樣實驗分析。首先選取大塊適合加工的煤樣,先用鉆孔取樣機對大塊的煤矸取樣,得到圓柱體的樣品,使用石材切割機對圓柱體樣品大概高度進行加工,使每組樣品中高度有所區(qū)別,對這些切割后的樣品使用磨礦機進一步加工的到規(guī)整的圓柱體,同時使每組樣品的高度盡可能的按照"3、4、5、6、7、8、9、10"的高度排列。完成了制樣工作后采用X射線檢測儀對所制得的樣品檢測,調(diào)整不同的參數(shù)值,主要是調(diào)整不同的電流電壓,獲得一系列的檢測圖像,對于這些圖像,將其轉(zhuǎn)化為灰度圖片,分析它們對應(yīng)的歸一化灰度直方圖,在軟件matlab的環(huán)境下編寫一些函數(shù)來計算一個特征值來表示對于某個特定樣品在一定的電壓電流的條件下,在檢測儀所產(chǎn)生的圖片,據(jù)此來研究如何在辨別矸石的過程中應(yīng)用用X射線。對于物料的分散排列機構(gòu)和自動排矸機構(gòu)進行了一定的研究,分別應(yīng)用了開環(huán)的和帶有反饋的控制規(guī)律,對于硬件機構(gòu)做了一定的設(shè)想,并對于該機構(gòu)的正常運行,通過PLC結(jié)合傳感器和執(zhí)行器,初步完善了這些設(shè)想,對于PLC做了選型和梯形圖程序的編寫。
[Abstract]:The separation of coal and gangue has always been the first problem to be solved in the development and utilization of coal resources. Green coal preparation requires that the impact on the environment be as small as possible. For coal with a smaller particle size of 50 mm), it is very popular to use heavy medium cyclone for washing coal. The extremely fine coal can be treated by flotation, but for large blocks of coal and gangue, there are still many coal preparation plants that adopt the traditional way, through the production experience on the belt of the raw coal preparation link, to work happily and painstakingly. Remove large pieces of gangue and debris. This link is very important. Removing large gangue before coal and gangue separation can greatly reduce ash content of raw coal, save energy consumption in crushing and sorting process, and improve production efficiency. This paper analyzes the coal samples from Yangzhuang coal farm in Huaibei. First of all, select the large coal sample suitable for processing, first, sample the bulk coal gangue by drilling the prototype, get the sample of the cylinder, use the stone cutting machine to process the cylinder sample about height, so that the height of each group of samples is different. These cut samples are further processed into regular cylinders by a mill, and the height of each set of samples is arranged as high as possible according to the height of "3'4'4'5'5'6'7'7'/ 8'/ 9'10". After the sample preparation was finished, the sample was detected by X-ray detector, and different parameter values were adjusted, mainly by adjusting different current and voltage to obtain a series of detection images. For these images, the images were transformed into grayscale images. By analyzing their corresponding normalized gray histograms, we write some functions in the software matlab environment to calculate an eigenvalue to represent the images generated by the detector under the condition of a certain voltage and current for a particular sample. The application of X-ray in the identification of gangue is studied. In this paper, the dispersing and arranging mechanism of materials and the automatic gangue mechanism are studied. The open loop and feedback control laws are applied, and the hardware mechanism is envisaged, and the normal operation of the mechanism is also discussed. Through the combination of sensors and actuators with PLC, these ideas are preliminarily perfected, and the PLC is selected and the program of ladder diagram is compiled.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD94

【參考文獻】

相關(guān)期刊論文 前10條

1 趙宏霞;丁芳亮;;KRS-智能干法分選系統(tǒng)在礦物分選中的應(yīng)用[J];煤炭加工與綜合利用;2016年09期

2 張世弘;劉振興;;基于MATLAB-GUI的信號采集與分析系統(tǒng)設(shè)計[J];機床與液壓;2015年21期

3 馬飛越;王博;;X射線成像系統(tǒng)輔助設(shè)備的研發(fā)與應(yīng)用[J];寧夏電力;2015年02期

4 魏華;何對燕;;低對比度圖像邊緣增強算法的研究與應(yīng)用[J];科學(xué)技術(shù)與工程;2014年34期

5 程棟;滕召勝;黎福海;代揚;;基于雙能γ射線的煤炭灰分測量模型及其應(yīng)用[J];湖南大學(xué)學(xué)報(自然科學(xué)版);2014年05期

6 邱軼兵;劉海增;張明泉;呂文豹;;選煤廠二次回路比較與分析[J];煤礦機械;2013年10期

7 王龍崗;;大焦距周向X射線探傷技術(shù)在低溫儲罐中的應(yīng)用[J];無損檢測;2013年04期

8 符志琰;劉元明;劉佳;;井下煤矸分離工藝在新汶礦區(qū)節(jié)能領(lǐng)域中的研究與應(yīng)用[J];科技信息;2011年27期

9 范久平;;執(zhí)行器在自控系統(tǒng)中的發(fā)展[J];山西建筑;2011年11期

10 馬琳;于寧;;數(shù)字圖像增強算法分析[J];交通科技與經(jīng)濟;2011年01期

，

本文編號：2015270