高钛型钒钛磁铁矿冶炼条件下焦炭在高炉内的性能变化  

Research on Properties of Coke in BF with High Ti Type Vanadic Titanomagnetite

作　　者：蒋胜[1] 

机构地区：[1]攀枝花钢铁研究院,四川攀枝花617000

出　　处：《钢铁钒钛》2005年第4期7-11,共5页Iron Steel Vanadium Titanium

摘　　要：对取自现场的入炉焦和风口焦进行了受热力作用、碳素溶损、矿物质侵入(TiO2、碱金属)、渣铁侵蚀等方面的研究,基本弄清了在高钛型钒钛磁铁矿冶炼条件下,焦炭在高炉内的蚀损情况。研究结果表明:随着炉料中碱负荷的增加,焦炭的反应性升高、反应后强度降低;在钒钛磁铁矿冶炼条件下,高炉内焦炭的开始反应温度平均为862℃,焦炭剧烈反应温度平均为1 266℃;焦炭的气化反应仍为主要蚀损,渣铁中TiO2的存在对焦炭有一定的保护作用。A series of study was took out with charging coke and tuyere coke, such as thermal effect active, coal solution loss, mineral（TiO2, Alkali metal） and slag- iron attack, so the solution loss of coke in BF with high Ti type vanadic titanomagnetite was understood. The results show that the CRI increases and the thermal stength of coke decreases with the alkali load of burden rising. The starting reaction temperature average of coke is 862 ℃ and the violent reaction temperature average is 1 266 ℃in BF with smelting vanadic titanomagnetite. The gasificating reaction of the coke is the main solution loss reaction, and the TiO2 in slag - iron protects the coke against solution loss.

关 键 词：高炉 钒钛磁铁矿 焦炭强度 热性能 特征温度 碱金属 

分 类 号：TF536[冶金工程—钢铁冶金]