低品位条件下钒钛磁铁矿高喷煤比冶炼实践  

Practice of Vanadium Titano-magnetite High Coal Injection Ratio Blast Furnace Process under Low Grade Condition

作　　者：杜斯宏 黄彬 曾华锋 

机构地区：[1]攀钢集团攀枝花钢钒有限公司炼铁厂,四川攀枝花617067

出　　处：《钢铁钒钛》2014年第5期83-87,共5页Iron Steel Vanadium Titanium

摘　　要：介绍了攀枝花钢钒公司1#高炉的原料结构以及在低品位钒钛磁铁矿冶炼条件下高喷煤比的生产实践。为了提高喷煤比、降低焦比,采取添加煤粉助燃剂、单枪喷煤改造为双枪喷煤、提高混合煤中高挥发分烟煤比例、提高风温和改善煤粉粒度等措施;同时,高炉采用提高鼓风动能、增加理论燃烧温度、增加矿石平台宽度稳定煤气流、减少炉温波动范围、保持适宜的造渣制度,从而改善喷吹煤粉燃烧性和提高高炉喷煤比。2014年一季度在入炉品位49.35%的条件下,喷煤比154.29 kg/t,焦比降低到421 kg/t;2014年4月在入炉品位49.32%的条件下,喷煤比164.47 kg/t,焦比降低到417 kg/t。The burden components and smelting practice with high PCI rate under low grade vanadium titano-magnetite at No.1 blast furnace of Ironmaking Plant of Panzhihua Steel and Vanadium Co.,Ltd had been discussed in the paper.For the purpose of increasing PCI rate and decreasing coke rate,some measures like adding pulverized coal combustion supporting agent,double pulverized coal injection guns,increasing the rate of high volatile bituminous coal of pulverized coal,increasing blast temperature and improving the particle size of pulverized coal as well were taken in order to improve the combustion performance of pulverized coal.Furthermore,some other measures,for example,increasing the blast kinetic energy,increasing the theoretical combustion temperature,increasing ore platform width to stabilize gas flow,reducing the temperature fluctuation range of blast furnace,maintaining suitable slagging system,were used at blast furnace to improve the combustion performance of pulverized coal and increase PCI rate.In the burden grade of 49.35% iron in the first quarter of 2014,the PCI rate was 154.29 kg / t,coke rate decreased to 421 kg / t.In the burden grade of 49.32% iron in 2014 April,the PCI rate reached 164.47 kg / t,coke rate decreased to 417 kg / t.

关 键 词：高炉 钒钛磁铁矿 品位 喷煤比 焦比 

分 类 号：TF538.63[冶金工程—钢铁冶金]