摘要
探讨了BC某高炉炉缸局部范围内温度异常升高的原因。通过从炭素捣打料的导热系数、炭砖砖缝渗铁和冷却壁制造防渗碳层间隙等方面的计算分析,以耦合实际温度,认为冷却壁与炭砖之间的炭素捣打料没有捣打密实,使捣打料的导热系数由正常的17.3W/(m·℃)变成了7.4W/(m·℃),成了传热体系的薄弱环节,是炉缸温度异常升高的原因。高炉炉缸安全,稳定与寿命,取决于设计.制造施工安装和生产维护等四个主要因素,这四个因素函数之间是乘积关系,而不是加和关系。
Analysis is made on abnormal temperature rise in some spots of BG BF hearth by calculating the heat conductivity of the carbon ramming materials,the iron seepage in the carbon brick joints and the gap of stave anti-seepage coatings,with actual hearth temperature taken into account also.It is believed that the carbon ramming materials between the cooling stave and carbon brick are not rammed compactly,resulting in decline of heat conductivity coefficient of the ramming materials from 17.3 W/(m·℃)to 7.4 W/(m·℃),which is a bottleneck in the heat transfer system and main cause of abnormal temperature rise in the hearth.It is considered that the safety,stability and long campaign of the hearth depend on the reliable design,manufacturing,installation and maintenance.Furthermore,the relationship among the design,manufacturing,installation and maintenance is a kind of a product relationship other than an additive relationship.
作者
贾娟鱼
伍积明
许俊
JIA Juanyu;WU Jiming;XU Jun(CISDI Engineering Co.,Ltd.)
出处
《炼铁》
CAS
北大核心
2022年第3期18-21,共4页
Ironmaking
关键词
高炉
炉缸
温度升高
炭素捣打料
导热系数
blast furnace
hearth
temperature rise
carbon ramming material
heat conductivity
