酒钢1号高炉冷却壁长寿技术应用简析  

Application of Long Campaign Cooling Stave Technology on JISCO No.1 BF

作　　者：李健[1] 秦占邦[1] LI Jian;QIN Zhanbang(JISCO Hongxing Iron and Steel Co.,Ltd.,Jiayuguan 735100,Gansu,China)

机构地区：[1]酒钢集团宏兴钢铁股份有限公司,甘肃嘉峪关735100

出　　处：《炼铁》2024年第4期12-16,共5页Ironmaking

摘　　要：酒钢1号高炉大修停炉检查冷却壁基本完好,5~7段铜冷却壁的使用效果明显优于8、9段铸铁冷却壁。1号高炉冷却壁使用效果较好,主要是采用了优化设计炉型、铜冷却壁、增加冷却水量提高冷却强度、联合软水密闭循环冷却系统等技术;同时,存在炉身中下部铸铁冷却壁冷却水流速偏小、冷却强度不足的问题,不易形成稳定的渣皮。认为,铜冷却壁上部的铸铁冷却壁是制约高炉长寿的重要环节,应结合高炉实际原燃料条件和操作制度优化设计,增加炉身下部铜冷却壁的高度,将铜冷却壁延伸至干湿交接部位。The cooling stave of JISCO No.1 BF is inspected during overhaul,and it is found that the cooling stave is in good status generally,and the copper cooling stave of section 5-7 appear much better than the cast iron cooling stave of section 8 and 9.Such situation is mainly contributed by optimization of furnace profile design,application of copper cooling staves,increase of cooling water flowrate(which enhances the cooling intensity),and application of combined close loop soft water circulation cooling system.However,it is also discovered from the inspection that the cooling intensity of the lower and middle part of the furnace stack is insufficient because of lower cooling water flow rate of the cast iron cooling stave installed there,which affects the formation of stable slag skull.It is believed that the cast iron cooling stave installed above the copper cooling stave is an important factor affecting the furnace long campaign.Therefore,the design needs to be optimized further according to the raw material and fuel conditions and the furnace operation system,and more copper cooling stave should be used at the lower part of the furnace stack,i.e.the copper cooling stave should be extended to the interface of the molten ore and liquified ore phases.

关 键 词：高炉 铜冷却壁 炉型 冷却强度 软水 

分 类 号：TF573[冶金工程—钢铁冶金]