电弧炉绿色智能制造技术的探索

EXPLORATION OF GREEN INTELLIGENT MANUFACTURING TECHNOLOGY FOR ELECTRIC ARC FURNACE

随着国民经济的持续高质量发展,绿色生产的理念逐步引入钢铁企业。电弧炉短流程工艺,在循环经济中的地位将日益明显。为了适应国家碳达峰、碳中和的要求,2019年江西台鑫钢铁有限公司就积极开展装备的升级改造,将顶装式电弧炉改造成Consteel(康斯迪)电炉;将R6m五机五流连铸机改造为R8m七机七流,连铸机拉速由3.5 m/min提高到4.5 m/min;取消了轧钢车间加热炉,实现了连铸坯直接轧制。公司积极探索电炉绿色低碳智能化制造技术的开发,先后开发了智能化配料技术,废钢连续加料及预热技术,智能底吹长寿技术,采用平熔池连续冶炼技术,高效泡沫渣形成以及二噁英和烟尘控制等技术,取得了很大的进步,从而使冶炼电耗达到350 kw·h/t以内,为公司节能降耗,提高竞争力起到了重要作用。

With the continuous high-quality development of the national economy,the concept of green production has been gradually introduced into iron and steel enterprises.The electric arc furnace short flow process will become increasingly important in the circular economy.In order to meet the national requirements for carbon peaking and carbon neutrality,in 2019,Jiangxi Taixin Iron and Steel Co.,Ltd.actively carried out equipment upgrades and transformed the top-mounted electric arc furnace into a consteel electric furnace.The R6m five-machine five-strand continuous casting machine was transformed into R8m seven-machine seven-strand,and the casting speed was increased from 3.5 m/min to 4.5 m/min.The heating furnace in the rolling workshop was cancelled,and the continuous casting billet was directly rolled.In the past few years,the company has also actively explored the development of green,low-carbon and intelligent manufacturing technology for electric furnaces,successively developed intelligent batching technology,continuous scrap feeding and preheating technology,intelligent bottom blowing longevity technology.Using flat molten pool continuous smelting technology,great progress has been made in high-efficiency foam slag formation,dioxin and smoke control.As a result,the smelting power consumption has reached within 350 kw.h/t,which has played an important role in saving energy and reducing consumption and improving competitiveness of the company.