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1前言目前,新日铁正在运行的高炉有9座,与开始兴建5 000 m3级超大型高炉的20世纪70年代中期相比,高炉数量减少了一半。为降低总生产成本,新日铁越来越强调提高高炉上游生产的灵活性、延长高炉寿命、节省劳动力和缩短炉衬大修工期等,该公司开发、应用了相关设备技术,如利用高炉
1 Foreword At present, Nippon Steel operates 9 blast furnaces, which halved the number of blast furnaces compared to the mid-1970s when it began the construction of a 5,000-m 3 extra-large blast furnace. In order to reduce the total cost of production, Nippon Steel has placed increasing emphasis on increasing the flexibility of upstream blast furnace production, extending the life of the blast furnace, saving labor and shortening the period of overhauling the lining. The company has developed and applied relevant equipment technologies such as blast furnace