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一、引言自从用了碳砖炉底,炉底寿命显著提高,高炉长寿的矛盾由炉底转移到炉身。一代役龄中,往往需要中修(炉身更换内衬和冷却设施)1～3次,炉身寿命成了高炉工作者主攻对象。现在国外在对冷却器材质和结构、内衬砖材质、冷却介质和冷却系统、炉顶装料装置、操作等方面进行改进后,密集式冷却板或冷却壁结构的炉身均已取得十年以上寿命的成果。近几年来,通过国内高炉工作者的努力,炉身寿命也在不断增加。随着高炉的强化和产量的增加,高炉炉
I. INTRODUCTION Ever since carbon brick has been used, the life of the hearth has been greatly improved. The contradiction between the long life of the blast furnace has been shifted from the hearth to the shaft. A generation of service age, often need to repair (change the lining of the shaft and cooling facilities) 1 to 3 times, the life of the furnace became the main target of blast furnace workers. At present, foreign countries have made ten years of improvement on the material and structure of the cooler, the material of the lining brick, the cooling medium and the cooling system, the top loading device and the operation thereof, etc. The result of the above life expectancy. In recent years, through the efforts of domestic blast furnace workers, the life of the furnace body is also constantly increasing. With the strengthening of the blast furnace and the increase of output, the blast furnace