混装铁焦对人造富矿还原行为的影响  

Effect of Iron Coke Mixed Charging on Agglomerates Reduction Behavior

作　　者：毕学工[1] 马毅瑞 李鹏[1] 张慧轩[1] 程向明[1] 史世庄[2] 

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081 [2]武汉科技大学湖北省煤转化与新型炭材料重点实验室,湖北武汉430081

出　　处：《钢铁》2014年第11期9-13,35,共6页Iron and Steel

基　　金：国家自然科学基金资助项目(51174149)

摘　　要：高炉炼铁是资源、能源的消耗大户,节能潜力巨大。铁焦是一种高反应性焦炭,将合适粒度和数量的铁焦与含铁炉料混装入炉,从理论上说具有降低焦比,取得节约稀缺炼焦煤资源和降低生产成本的潜力。对混合试样的还原机理进行了分析,并对铁焦与人造富矿的耦合反应进行了实验室研究,证明混入铁焦对烧结矿和球团矿的还原反应有明显的促进作用,提高温度和增加铁焦用量对提高铁矿石的还原度有利。The blast furnace ironmaking process needs a large number of resources and energy with a great energy saving potential. Iron coke is a highly reactive coke. Iron coke with the appropriate size and amount are mixed with ferrous bur-den and then charged into the blast furnace. It can lower coke rate theoretically, save scarce coking coal resources and re-duce the production cost. The reduction mechanism of the mixed sample is analyzed and the coupling-reaction of iron coke and agglomerates is researched in laboratory, confirming that the mixing of iron coke has an obvious promotion ef-fect on the reduction reaction of sinter and pellets. And increase of temperature and iron coke consumption are benefit for the improvement of iron ores reduction degree.

关 键 词：铁焦混装 耦合反应 铁矿石还原 低碳炼铁 高炉 

分 类 号：TF533[冶金工程—钢铁冶金]