高炉富氧鼓风对高炉热状态的影响及对策  

Influence of Oxygen-Enriched Operation on Thermal State of Blast Furnace and Corresponding Countermeasures

作　　者：郁肖兵 宋文刚[2] 倪文杰 邹宗树 YU Xiao-bing;SONG Wen-gang;NI Wen-jie;ZOU Zong-shu(School of Metallurgy,Northeastern University,Shenyang 110819,China;Ironmaking Plant,Baoshan Iron&Steel Co.,Ltd.,Shanghai 201900,China)

机构地区：[1]东北大学冶金学院,辽宁沈阳110819 [2]宝山钢铁股份有限公司炼铁厂,上海201900

出　　处：《东北大学学报（自然科学版）》2018年第10期1413-1417,1422,共6页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51574064)

摘　　要：为进一步探究高炉富氧操作下的冶炼规律,用已建立的高炉富氧综合模型对不同操作条件下的高炉热状态进行计算和分析.结果表明:炉缸喷吹循环煤气能有效抵消富氧操作引起的燃料比增长,且在低富氧操作时高炉不需喷吹循环煤气就能满足上下部热量平衡;增加喷煤量需要与提高富氧率相对应,不同的喷煤量具有不同的富氧操作区间.模型求得富氧操作条件下鼓风加湿极限值,即鼓风加湿不应超过21. 2 g/m3,相应的富氧率极大值约为4. 6%.In order to further explore the smelting law under the oxygen-enriched blast furnace operation,a previous blast furnace oxygen-enriched comprehensive model was revised to study the thermal state of the blast furnace under different operating conditions.The results showed that furnace cylinder injection of circulating gas can effectively offset the increase of fuel ratio caused by oxygen enrichment operation,and in the low-oxygen enrichment operation,the blast furnace can meet the upper and lower heat balance without spraying the circulating gas.Increasing the amount of coal injection needs to correspond to increasing the oxygen enrichment rate,and different coal injections have different oxygen-enrichment operating intervals.From the model,the limit value of humidification under oxygen-enriched operation can be obtained,where the blast humidity should not exceed 21.2 g/m 3,and the corresponding oxygen enrichment rate maximum is about 4.6%.

关 键 词：高炉 富氧极限 燃料比 喷煤 鼓风加湿 

分 类 号：TF538.5[冶金工程—钢铁冶金]