大型高炉高强度环保炮泥的研制及应用

Study on taphole clay with high strength and enviroment-friendly and its application in large blast furnace

对大型高炉高强度环保炮泥的组成、性能、结构进行了研究。研制的炮泥在炼铁厂4座高炉得到了应用,在3 800 m3高炉连续使用4个月,日出铁次数11-13次,铁水流速7.5 t/min,吨铁炮泥消耗降到0.49 kg;为高炉快速达产、减少铁水散喷创造了条件;该炮泥容易开孔,铁口通道稳定,抗渣铁侵蚀,没有黑色、黄色的毒害烟雾,利于现场工作环境的改善。

The composition,structure and properties of taphole clay with high strength and enviroment-friendly used for large blast furnace are investigated in this paper.The taphole clay has been applied at four blast furnaces of the Ironmaking Plant of WISCO,of which the taphole clay was continuously applied for four months at a new BF with 3 800 m3.On this furnace,the daily tapping time was 11-13,the flow rate of hot metal was 7.5 t/min and the consumption of taphole clay decreased to 0.49 kg/t,which was helpful for the new blast furnace to reach its designed production quickly.The taphole clay is good in anti-corrosion properties of slag and hot metal and easy to be opened,and no poisonous smoke in tapping process.As a result,the operational surrounding of casthouse can be improved.