近几年,国内高炉上、下部调剂技术有较快的发展。七十年代,国外高炉操作者也注意到控制炉料分布、炉热与送风技术的重要性。在没有使用可调炉喉导料板与无钟炉顶的情况下,国内20多座高炉采用大料批、正分装方法降低了焦比30kg/t左右;下部控制理论燃烧温度、送风与提高炉渣碱度,冶炼低硅低硫生铁。 In recent years, the domestic blast furnace, the lower swap technology has a faster development. In the seventies, foreign blast furnace operators also noticed the importance of controlling charge distribution, furnace heat and blowing technology. In the absence of the use of adjustable throat guide plate and no bell top case, the domestic blast furnace using more than 20 large batch, is divided into sub-method to reduce the coke ratio 30kg / t or so; lower control theory combustion temperature, air supply With raising basicity of slag, smelting low silicon low sulfur pig iron.