250t钢包底吹氩透气砖的使用与改进.pdfVIP

2002 年 　 10 月 炼 　钢 　　Oct . 2002 　　　　　　　　　　 第 18 卷 第 5 期 Steelmaking Vol. 18 　No. 5 ·5 · 250 t 钢包底吹氩透气砖的使用与改进 陈双全 　胡铁山　陈　波 ( ( ) ) 武汉钢铁 集团 公司 　　摘 　要 　钢包底吹氩透气砖是 L F 关键的功能性耐火材料 , 它的流量特征 、重复吹成率 、安全性和 使用寿命直接关系到 L F 功能的正常发挥 。武钢成功开发出高性能狭缝迷宫式 250 t L F 用透气砖 , 3 年来使用安全可靠 , 无一渗钢 、漏钢事故发生 , 重复吹成率达到99 %以上 , 透气砖寿命与钢包底部寿 命同步 , 平均使用寿命达 28 次 , 可满足钢厂生产高纯净钢的需要 。 关键词 　L F 　吹氩 　供气砖 Application and Improvement of Permeable bricks for 250 t Ladle Bottom Argon Bubbling Purpose Chen Shuangquan 　Hu Tieshan 　Chen Bo (Wuhan Iron and Steel Corp. ) 　　Abstract 　The permeable bricks for ladle bottom Argon bubbling are critical functional refactory elements for L F furnace and the flowability , repeated blowing rate , reliability and service life have direct bearing on the proper performance of functions of L F furnace. For the purpose the high quality labyrinth type narrow seam permeable bricks for 250 T L F furnace have been successfully developed. The newly developed elements have been used in operation for more than 3 years without occurrence of any accidents such as hot metal infiltration and breakout and the repeated blowing rate of the element come up to 99 % and the service life of the permeable brick synchronizes with the ladle bottom life. The repeated blowing times for a single permeable element are 28 and therefore th