攀钢高炉喷吹煤粉的燃烧性与反应性研究  

Experimental Study on Combustibility and Reactivity of Pulverized Coals Injected in Blast Furnace in Pansteel

作　　者：贺鑫杰[1] 张建良[1] 祁成林[1] 文永才[2] 付卫国[2] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]攀枝花钢铁研究院,四川攀枝花617000

出　　处：《过程工程学报》2011年第6期951-957,共7页The Chinese Journal of Process Engineering

基　　金：国家科技支撑计划项目资助项目(编号:2008BAB32B05)

摘　　要：采用热重分析法,对比研究了攀钢高炉喷吹所用的7种精煤、6种瘦煤、现用混煤及2种焦化除尘灰的燃烧性和反应性.结果表明,同瘦煤相比,精煤和现用混煤的燃点和燃烬温度较高,燃烧时间较长;现用混煤的初始燃烧温度为509℃,高出瘦煤和精煤的初始燃烧温度多达46℃和12℃,现用混煤在各个温度下的燃烧率都较差,燃烧性不理想.精煤的反应性与灰分有关,灰分越低反应性越好;现用混煤的反应性很差,在1200℃的反应失重率仅为58.62%,比瘦煤和精煤在1200℃的反应失重率相差多达12.61%和15.30%.这些样品的燃烧性及反应性研究表明,攀钢的混煤方案有待优化.The combustibility and reactivity of 7 kinds of clean coal,6 kinds of lean coal,current mixed coal and 2 kinds of coked dust ash in Pansteel were investigated with thermogravimetric analysis. The results show that compared with lean coal,clean coal has higher initial and terminated burning temperature and longer burning process. The initial burning temperature of current mixed coal is 509℃,which is 46℃ and 12℃ higher than that of lean coal and clean coal respectively. The combustion rate of current mixed coal at different temperatures is low,and its combustibility poor. The reactivity of clean coal is related to its ash content,the coal with lower ash content has better reactivity to CO2. The reaction rate of current mixed coal is 58.62% at 1200℃,which is 12.61% and 15.30% lower than that of lean coal and clean coal respectively. The present research results on the combustibility and reactivity of all these samples indicate that it is necessary to improve the scheme of blended-coal in Pansteel.

关 键 词：高炉喷煤 差热分析法 燃烧性 反应性 

分 类 号：TF538.63[冶金工程—钢铁冶金]