1 前言 原有燃煤加热炉是根据意大利引进轧机配套设计的,年产9～10万t,以生产普钢为主。为了适应市场的需求,扩大和开发钢种,生产小规格优质圆钢,燃煤加热炉温度不易掌握、控制不当对钢材质量就会造成一定影响。燃煤炉粉尘较多,对钢材的表面质量不利,加之操作上引起的不完全燃烧,造成整个车间浓烟滚滚,环境保护达不到要 1 Introduction The original coal-fired heating furnace is based on the introduction of Italy supporting the design of rolling mill, an annual output of 9 to 100000 t, the production of general-based steel. In order to meet the needs of the market, expanding and developing steel, production of high-quality small round bar, coal-fired furnace temperature is not easy to grasp, improper control of steel quality will have a certain impact. Coal-fired dust more, the surface quality of steel adverse, coupled with incomplete combustion caused by the operation, resulting in smoke throughout the workshop billowing, less than the environmental protection to