摘要
马钢4号高炉在设计过程中进行了多项工艺设计改进,开炉后经过不断探索,逐步形成了适合自身冶炼条件的高炉操作特征:①装料制度采用大矿批结合中心加焦的布料模式,控制合理的平台漏斗,形成了具有马钢特点的两道气流分布;②送风制度建立起了鼓风动能、风口回旋区、炉腹煤气量等关键参数的管控体系,确保初始煤气流分布合理、炉缸工作活跃;③日常注重操作炉型的管理。4号高炉炉况保持了长周期稳定顺行,技术经济指标逐年提升,2021年利用系数为2.665V(m^(3)·d)、煤比>150kg/t、燃料比<500kg/t。
The process solution of Masteel No.4 BF is optimized during the design,and the furnace operational features matching with the smelting condition are gradually formed through the constant practices after blowing-on:(1)the charging system operates in a distribution mode of large ore batch+central coking with a reasonable funnel pattern platform;and Masteel style of central and edge gas flow distribution paths comes into being;(2)a control system of key blasting system parameters,such as blast kinetic energy,tuyere raceway and belly gas volume,is set up,which ensures reasonable distribution of initial gas flow and active working of the hearth;(3)the operation team highlights the operating furnace profile management regularly.The furnace keeps long-term stable smooth running,and the techno-economic indexes improved year by year.In 2021,the furnace productivity goes up to 2.665t/(m^(3)·d)with the coal rate>150kg/t and the fuel rate<500kg/t.
作者
聂长果
陈军
王志堂
高广静
罗顺安
王阿朋
NIE Changguo;CHEN Jun;WANG Zhitang;GAO Guangjing;LUO Shunan;WANG Apeng(Ironmaking Plant,Maanshan Iron&Steel Company Ltd.,Maanshan 243000,Anhui,China)
出处
《炼铁》
CAS
北大核心
2023年第5期15-20,共6页
Ironmaking
关键词
大型高炉
设计改进
操作制度
出铁
操作炉型
large-sized blast furnace
design optimization
operating system
tapping
operating furnace profile
