高炉块矿比例提升措施研究  

Research on Measures to Increase the Proportion of Lump Ore in Blast Furnace

作　　者：李艳斌 谢师威 刘雪伟 王德全 佘雪峰 Li Yanbin;Xie Shiwei;Liu Xuewei;Wang Dequan;She Xuefeng(Delong Steel Co.,Ltd.,Xingtai Hebei 054009,China;State Key Laboratory of New Technology for Iron and Steel Metallurgy,University of Science and Technology Beijing,Beijing 100083,China;Hebei Hot Rolled Plate and Strip Technology Innovation Center,Xingtai Hebei 054009,China)

机构地区：[1]德龙钢铁有限公司,河北邢台054009 [2]北京科技大学钢铁冶金新技术国家重点实验室,北京100083 [3]河北省热轧板带钢技术创新中心,河北邢台054009

出　　处：《山西冶金》2024年第8期177-180,共4页Shanxi Metallurgy

摘　　要：对某高炉开展块矿比例提升实践,采取烘干、控制振筛下料量等措施加强块矿筛分,减少粉末入炉;通过调整装料制度、送风制度、造渣制度,提高渣铁排放;在煤比达160 kg/t以上的条件下,将块矿入炉比例提高至17%~20%。采取相关措施后,高炉内透气性和压差合理,保障了高炉煤气流畅通、分布合理,炉渣黏度降低,实现了高炉稳定生产,降低铁水成本30元/t以上。The practice of increasing the propotion of ore blocks in a blast furnace is carried out.Measures such as drying and controlling the amount of material discharged from the vibrating screen are taken to strengthen the screening of block ore and reduce the amount of powder entering the furnace.By adjusting the loading system,air supply system,and slag making system,we can improve the discharge of slag and iron.Under the condition of a coal ratio of over 160 kg/t,increase the proportion of lump ore entering the furnace to 17%~20%.after taking relative measures,reasonable permeability and pressure difference inside the blast furnace ensure smooth flow and reasonable distribution of blast furnace gas,reduce slag viscosity,achieve stable production of the blast furnace,and reduce the cost of molten iron by more than 30 yuan/ton.

关 键 词：块矿比例 操作制度 热爆裂指数 软熔性能 

分 类 号：TF631[冶金工程—钢铁冶金]