GBEF054

豎爐焙燒；磁選管回收率(MTRR)；Rockwell自動(dòng)化；綜合自動(dòng)化系統(tǒng)；智能優(yōu)化 基于Rockwell自動(dòng)化技術(shù)的豎爐焙燒過(guò)程綜合自動(dòng)化系統(tǒng) 嚴(yán)愛(ài)軍 東北大學(xué)自動(dòng)化研究中心 ,機(jī)器視覺(jué) ,煙草機(jī)械

1 引 言

      選礦生產(chǎn)是鋼鐵工業(yè)的基礎(chǔ)，雖然我國(guó)的鐵礦資源豐富，但大多為品位較低的赤鐵礦等難選礦石，其品位一般為33％左右，利用常規(guī)的磁選方法難以從這些原料中提取出高品位的鐵質(zhì)成分。為了改善對(duì)弱磁性赤鐵礦礦石的分選效果，采用豎爐預(yù)先對(duì)礦石進(jìn)行高溫還原磁化焙燒，使弱磁性礦物變成強(qiáng)磁性礦物，然后再用磁選方法既可以得到鐵精礦。于是，豎爐磁化焙燒過(guò)程直接關(guān)系到選礦的金屬回收率與精礦品味等生產(chǎn)指標(biāo)?？刂坪秘Q爐磁化焙燒過(guò)程是提高選礦過(guò)程金屬回收率與精礦品味的關(guān)鍵。

      豎爐是將弱磁性鐵礦石（主要成分Fe2O¬3）在加熱帶進(jìn)行加熱，然后落入還原帶，在一定濃度還原劑、一定溫度下，使Fe2O¬3還原成強(qiáng)磁性的磁鐵礦Fe3O¬4的熱工設(shè)備，工藝過(guò)程俗稱(chēng)磁化焙燒。豎爐于1926年世界始建。我國(guó)首次于1966年由鞍山黑色冶金礦山設(shè)計(jì)院設(shè)計(jì)豎爐[1]。

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