我厂5座300m~3中型高炉的第四代炉龄一般都达到7年左右,但随着冶炼强度的不断提高,这些高炉后期炉顶设备劣化,因此必须对炉顶设备的操作与维修方法进行改进,才能满足生产的需要。 我厂12号高炉自1981年9月18日开炉至1991年2月14日停炉,第四代炉龄长达9年5个月,生产合格生铁106万t,平均利用系数为2.006,设备开动率达 The fourth generation of 5 300m ~ 3 medium-sized blast furnaces in our plant has a typical age of about 7 years. However, with the continuous improvement of the smelting strength, the top equipment of these blast furnaces is deteriorated in the late stage. Therefore, the operation and maintenance methods of the top equipment To improve, in order to meet the needs of production. The 12th blast furnace of our factory was opened from September 18, 1981 to the outbreak on February 14, 1991, and the fourth generation of furnace was as long as 9 years and 5 months with a production capacity of 1.06 million tons of pig iron. The average utilization coefficient was 2.006, Equipment up to rate