本文選題：礦熱爐 + 冶煉關(guān)鍵參數(shù)��； 參考：《太原理工大學(xué)》2017年博士論文

【摘要】：在礦熱爐冶煉過程中,電極端部位置、電弧長(zhǎng)度及熔池液面位置這三個(gè)參數(shù)十分關(guān)鍵,它影響著產(chǎn)品質(zhì)量、冶煉能耗以及生產(chǎn)安全,故這些關(guān)鍵參數(shù)的檢測(cè)至關(guān)重要。針對(duì)礦熱爐冶煉過程中關(guān)鍵參數(shù)檢測(cè)方法精度低、開發(fā)難度大的問題,本文提出了一種非接觸式磁場(chǎng)陣列檢測(cè)法。礦熱爐爐內(nèi)的電極電流和熔池電流產(chǎn)生的磁場(chǎng)體現(xiàn)于爐體外部,根據(jù)礦熱爐的電磁場(chǎng)空間分布規(guī)律和電磁場(chǎng)相關(guān)理論,構(gòu)建礦熱爐磁場(chǎng)輻射模型,結(jié)合工業(yè)現(xiàn)場(chǎng)環(huán)境進(jìn)行理論推導(dǎo)和仿真驗(yàn)證。采用自行設(shè)計(jì)的簡(jiǎn)易3D磁場(chǎng)檢測(cè)系統(tǒng)進(jìn)行了基礎(chǔ)實(shí)驗(yàn)驗(yàn)證,并設(shè)計(jì)開發(fā)三維磁場(chǎng)陣列檢測(cè)系統(tǒng)采集現(xiàn)場(chǎng)磁場(chǎng)信息,描繪出礦熱爐爐內(nèi)的電流分布特性,進(jìn)而獲取其冶煉關(guān)鍵參數(shù)信息。經(jīng)仿真與現(xiàn)場(chǎng)測(cè)試發(fā)現(xiàn),當(dāng)陣列與電極發(fā)生相對(duì)位移10cm時(shí),磁場(chǎng)陣列傳感裝置所采集的曲線可準(zhǔn)確反映出其相對(duì)位移信息�，F(xiàn)場(chǎng)實(shí)驗(yàn)結(jié)果表明,礦熱爐的爐體外部確實(shí)存在電極電流和熔池電流產(chǎn)生的交流磁場(chǎng),三維磁場(chǎng)陣列檢測(cè)系統(tǒng)所采集的數(shù)據(jù)可反映出電極端部位置、電弧長(zhǎng)度及熔池液面位置等冶煉關(guān)鍵參數(shù)。研制的磁場(chǎng)陣列傳感器產(chǎn)品相當(dāng)于為礦熱爐量身定做了一個(gè)工業(yè)CT,本文提出的方法對(duì)礦熱爐冶煉關(guān)鍵參數(shù)檢測(cè)領(lǐng)域具有很好的實(shí)用價(jià)值。
[Abstract]:In the process of smelting, the three parameters of electric extreme position, arc length and molten pool level position are very important, which affect the product quality, smelting energy consumption and production safety, so the detection of these key parameters is very important. A non-contact magnetic field array detection method is proposed to solve the problems of low precision and difficult development of the key parameters in the smelting process of the furnace. The magnetic field produced by electrode current and molten pool current in the furnace is reflected outside the furnace body. According to the spatial distribution law of electromagnetic field and the related theory of electromagnetic field, the radiation model of magnetic field in the furnace is constructed. Combined with the industrial field environment, theoretical derivation and simulation verification are carried out. A simple 3D magnetic field detection system designed by ourselves is used to verify the basic experiment, and a 3D magnetic field array detection system is designed and developed to collect the field magnetic field information, and to describe the current distribution characteristics in the furnace. Furthermore, the key parameters of smelting are obtained. By simulation and field test, it is found that the curves collected by the magnetic field array sensor device can accurately reflect the relative displacement information when the relative displacement 10cm occurs between the array and the electrode. The field experiment results show that the AC magnetic field produced by electrode current and molten pool current does exist outside the furnace body of the furnace, and the data collected by the 3D magnetic field array can reflect the position of the electric extreme part. Arc length and molten pool level position and other key smelting parameters. The developed magnetic field array sensor product is equivalent to a kind of industrial CTs tailored for the ore-heating furnace. The method proposed in this paper has a good practical value in the field of the detection of the key parameters of the smelting process of the ore-heating furnace.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2017
【分類號(hào)】：TF33;TP212

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本文編號(hào)：1999329