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为了保持循环使用操作中的中包容器内部的热量和不活跃气氛，本文作者开发了一种新型中包加热器。该系统采用一种存贮型换热器，向中包内喷入加热至１５００℃的氮气流以维持无氧化气氛。川崎钢公司水岛厂的４号连铸机已采用了这种新的加热系统，在使用循环运行的热中包的情况下，明显改善了所生产的连铸板坯的质量。本文阐述了Ｎ２喷吹加热器的原理及其对钢质量的影响。
In order to maintain the heat and the inert atmosphere inside the container in the recycling operation, the authors developed a new mid-package heater. The system uses a storage-type heat exchanger to inject a stream of nitrogen heated to 1500 ° C into the bag to maintain a non-oxidizing atmosphere. This new heating system has been used on the No.4 co-casting machine at Kawasaki Steel’s Mizushima Plant and has significantly improved the quality of the continuous casting slab produced using the reclaimed hot runner package. This paper describes the principle of N2 jet heater and its impact on the quality of steel.