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文章介绍新日本制铁公司八幡制铁所的热轧厂板坯加热炉进行节能改造的措施和取得的效果。采取了三项措施:(1)控制最适炉压,将原炉压17.6帕改为14.7帕,使热回收率提高3％,降低能耗8360千焦/吨;(2)改善密封装置,使全炉平均氧浓度由5～8％降低到1～4％;(3)炉尾预热段设置上下隔墙,遮断预热段高温区的烧嘴向炉尾的气体辐
This article introduces the measures and achievements made by the new Nippon Steel Company’s Yahata Iron & Steel Co., Ltd. in its slab heating furnace for hot-rolling mill. Three measures were taken: (1) to control the optimum furnace pressure and change the pressure of the original furnace from 17.6 Pa to 14.7 Pa, to increase the heat recovery rate by 3% and to reduce the energy consumption by 8,360 kJ / ton; (2) to improve the sealing device, So that the average furnace oxygen concentration from 5 to 8% down to 1 to 4%; (3) preheating furnace section set up and down the wall, blocking the preheating section of the high temperature zone burner to the tail of the gas spokes