近年来，中国高炉长寿技术取得了长足的进步，部分高炉寿命达到国际先进水平，但同时也出现数十座高炉发生炉缸事故或异常侵蚀破损。高炉长寿技术是一项综合技术，高炉要实现长寿除需要保障炉衬、炉体材质和建筑施工质量外，科学合理的设计是关键，高炉生产操作监控维护是基础。基于对多座高炉长寿技术应用状况和高炉炉缸的破损调查，从设计、操作等多方面对炉缸破损原因进行分析，并提出了长寿炉缸设计的优化原则和实现炉缸长寿的生产操作、监测、维护及管理的控制对策。
In recent years,the campaign life of China blast furnaces has made a great progress,and some of them have reached international level. However,dozens of blast furnace hearth accident or abnormal corrosion occurred. Blast fur-nace longevity is a comprehensive technology. To realize blast furnace longevity scientific and reasonable design is the key,meanwhile monitoring and maintenance is the basis. According to the investigation on longevity technology applica-tion and hearth corrosion of many blast furnaces,the hearth corrosion reasons are analyzed in terms of design,operation, etc. On this basis,some optimization principle and measures on operation,monitoring,maintenance,are put forward to realize hearth longevity.
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