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日本五大钢铁公司1982年炼铁燃料比增加35公斤,即增加1％。为了对付石油涨价,日本自1979年末开始转向全焦操作,新日铁公司名古屋厂3号高炉在1981年最后实现全焦作业,标志着这种转变的完成。其后研制了喷吹煤粉、煤焦油糊、煤油糊的技术。新日铁大分钢铁厂1号高炉已进行喷吹煤粉,目前的喷吹量为每吨铁60公斤。喷吹焦油的重点在(?)烟厂。住友金属工业公司在1981年开发了喷吹煤粉重油混合燃料,进行了试验操作。1982年,加上喷吹煤焦油糊和喷吹煤粉,相当于每生产一吨铁喷吹一公斤煤。
In 1982, the five largest steel companies in Japan increased their iron-fuel ratio by 35 kg, or 1%. In response to the oil price hikes, Japan shifted its focus to full-coke operation since the end of 1979 and the completion of this shift was achieved by the completion of all-coke operations at the Nagoya Plant No.3 blast furnace at Nippon Steel Corporation in 1981. Subsequently developed a pulverized coal injection, coal tar paste, kerosene paste technology. Nippon Steel Oita Iron Works blast furnace No. 1 has been carried out pulverized coal injection, the current volume of 60 kg per ton of iron. The focus of the tar spray is at (?) Tobacco Factory. In 1981, Sumitomo Metal Industries Co., Ltd. developed a pulverized coal-fired heavy fuel oil mixed fuel and conducted a pilot operation. In 1982, plus the injection of coal tar paste and pulverized coal injection, the equivalent of producing one ton of iron per kilogram of coal injection.