摘要
建立了铜钢复合冷却壁的稳态传热模型,利用ANSYS单元生死方法模拟冷却壁表面渣皮熔化行为,分析冷却壁温度分布、渣皮厚度及热负荷。结果表明：复合冷却壁附近炉气温度是影响其传热行为和渣皮厚度的主要因素;渣皮在冷却壁表面分布不均匀,随着炉气温度升高渣皮不均匀性逐渐增加;提高水速和全铜质壁体可以有效降低壁体温度,但对热负荷、渣皮厚度影响较小;在炉气温度1 200～1 400℃范围内,复合冷却壁的铜壁最高温度为125℃,承受热负荷达到82.8 kW/m2,能够满足高炉高负荷区的冷却要求。
The steady-state heat transfer model for copper-steel compound stave has been established.Melting behavior of slag skull on the surface of stave has been simulated with the element birth and death method of ANSYS.The temperature distribution and heat load and slag skull thickness of copper-steel compound stave have been analyzed.The results show that gas temperature near the stave is the main factor that affects heat transfer and slag skull thickness;the slag skull thickness is not uniform on the surface of the stave, and the extend of nonuniformity increases with gas temperature rising; higher water rate and copper stave can decrease the stave body temperature effectively, but its effect on heat load and slag skull thickness is not marked; between 1 200 ℃ and 1 400 ℃ of gas temperature, the maximum temperature on the copper wall is 125 ℃, and the heat load 82.8 kW/m^2 ; therefore, the copper-steel compound stave can meet the need of blast furnace cooling in high heat load area.
出处
《钢铁》
CAS
CSCD
北大核心
2009年第12期8-11,共4页
Iron and Steel
关键词
高炉冷却
渣皮
冷却壁
热负荷
BF cooling
slag skull
cooling stave
heat load
