發(fā)布時間：2018-11-27 07:10

【摘要】：斜窄流分級濃密箱是在引進(jìn)國外設(shè)備的基礎(chǔ)上,進(jìn)行一系列創(chuàng)新性研發(fā)的水力分級設(shè)備。該設(shè)備結(jié)構(gòu)簡單、易于操作、能耗低、分級效率高,目前其逐漸被應(yīng)用于鋼鐵、環(huán)保、制糖、磷化工等多個領(lǐng)域。鞍鋼集團(tuán)礦業(yè)公司選鈦廠原來是采用先濃縮脫泥再分級的工藝,該工藝存在著很多生產(chǎn)技術(shù)問題,如濃縮分級設(shè)備的分級效率和生產(chǎn)能力較低,濃縮脫泥效果較差及篩網(wǎng)磨損快等,為了解決這些技術(shù)問題,選鈦廠采用了斜窄流濃密箱進(jìn)行分級和濃縮作業(yè),分級濃縮出來的礦物粒級完全達(dá)到了選鈦?zhàn)鳂I(yè)的粒級要求,分級效率都很高。但其經(jīng)常受到入選原礦流量、濃度和粒度的波動影響,通過人工方式對流量、濃度等參數(shù)進(jìn)行控制,往往會使各類技術(shù)指標(biāo)都達(dá)不到要求。因此,利用自動控制技術(shù)來對斜窄流濃密箱實(shí)現(xiàn)自動控制具有重要意義。本文借鑒了國內(nèi)外選廠斜窄流分級濃密箱底流流量、濃度等參數(shù)自動檢測及控制技術(shù),并結(jié)合其在現(xiàn)場應(yīng)用情況,應(yīng)用成熟的PLC控制器和儀表檢測技術(shù),對斜窄流分級濃密箱分級和濃縮過程實(shí)現(xiàn)自動控制。經(jīng)過一段時間的現(xiàn)場考察和分析,設(shè)計并完成了一套以WINCC及SIMATIC S7-300系列PLC為主體的斜窄流分級濃密箱底流濃度自動控制系統(tǒng)。在掌握PLC工作原理和使用方法的基礎(chǔ)上,編寫了斜窄流分級濃密箱的PLC控制程序(編程語言為梯形圖)。經(jīng)過分析比較,本自動控制系統(tǒng)控制器選用西門子S7-300系列中以CPU 315-2DP為控制核心的PLC；檢測儀表采用超聲波濃度計、HHD智能電磁流量計和ZSX-D智能型電子式電動膠管調(diào)節(jié)閥。利用WINC C組態(tài)軟件上位機(jī)監(jiān)控系統(tǒng)進(jìn)行組態(tài)設(shè)計。在實(shí)驗(yàn)室對斜窄流分級濃密箱的自動控制系統(tǒng)進(jìn)行了模擬試驗(yàn),從試驗(yàn)結(jié)果可以得知,自控系統(tǒng)的穩(wěn)定性和可靠性都比較高。
[Abstract]:The tilted narrow-flow classifier is a series of innovative hydraulic classification equipment based on imported foreign equipment. The equipment is simple in structure, easy to operate, low in energy consumption and high in classification efficiency. It has been gradually used in many fields such as iron and steel, environmental protection, sugar making, phosphorus chemical industry and so on. The titanium separation plant of Angang Group Mining Company originally adopted the process of concentrating and desliming and then classifying. There are many technical problems in this process, such as the low classification efficiency and production capacity of the equipment. In order to solve these technical problems, the separation and concentration operation of inclined narrow flow thickening box is adopted in the titanium separation plant, and the grade of mineral particles can reach the requirements of the titanium separation operation. Classification efficiency is very high. However, it is often affected by the flow rate, concentration and particle size fluctuation of raw ore, and the parameters such as flow rate and concentration are controlled by manual method, which often make all kinds of technical indexes fail to meet the requirements. Therefore, it is important to use automatic control technology to realize automatic control of inclined narrow flow dense box. This paper draws lessons from the automatic detection and control technology of flow rate and concentration in the bottom flow of inclined narrow flow classified dense box at home and abroad. Combined with its application in the field, the mature PLC controller and instrument detection technology are applied. Automatic control of the classification and concentration process of inclined narrow flow classifier is realized. After a period of on-the-spot investigation and analysis, an automatic control system of bottom flow concentration of inclined narrow flow classified dense box with WINCC and SIMATIC S7-300 series PLC as the main body is designed and completed. On the basis of mastering the working principle and using method of PLC, the PLC control program (ladder diagram for programming language) of inclined narrow flow classified dense box is compiled. After analysis and comparison, the automatic control system controller selected Siemens S7-300 series of PLC; with CPU 315-2DP as the control core. Ultrasonic concentration meter, HHD intelligent electromagnetic Flowmeter and ZSX-D intelligent electronic hose regulating valve are used. The configuration design is carried out by WINC C configuration software. The simulation test of the automatic control system of the inclined narrow flow classified dense box is carried out in the laboratory. The results of the test show that the stability and reliability of the automatic control system are relatively high.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD67;TP273

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本文編號：2359809