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一前言 加热炉消耗的燃料,在日本的钢铁联合企业中,占总能耗的10％左右,在轧钢厂中占其总能耗的30％——70％。现在,加热炉单位燃耗,不仅是工厂成本管理的内容之一,而且亦是衡量工厂管理水平和技术水平的标志之一。 近年,日本各钢铁企业轧钢加热炉的单位热耗不断降低。1974年至1975年,板坯加热炉的单位热耗是300×10~8(千卡/吨)。1977年曾报导加热能力为100(吨/时)的板坯加热炉的单位热耗,从385×10~8(千卡/吨)降低到260×10~8(千卡/吨)是可能的。现在,据了解,还可能降低到246×10~8(千卡/吨)。 二 加热炉的最低单位热耗计算
A foreword The fuel consumed by furnaces accounts for about 10% of the total energy consumption in Japan’s steel conglomerates and 30% to 70% of their total energy consumption in rolling mills. Now, unit burnup is not only one of the contents of factory cost management, but also one of the hallmarks of factory management and technical standards. In recent years, Japan’s steel companies rolled steel heating furnace unit heat consumption continues to decline. From 1974 to 1975, slab heating furnace unit heat consumption is 300 × 10 ~ 8 (kcal / ton). The unit heat consumption of slab reheating furnaces with a heating capacity of 100 (t / h) reported in 1977 was reduced from 385 × 10-8 (kcal / tonne) to 260 × 10-8 (kcal / tonne) of. Now, it is understood that it may also be reduced to 246 × 10 ~ 8 (kcal / ton). Second heating furnace minimum unit heat consumption calculation