电弧炉炼钢用四元炉料的冶炼过程物耗和能耗分析

Study on the materials and energy condition of using four furnace charges in EAF steelmaking process

天津钢管集团股份有限公司150t电弧炉炼钢长期使用四元炉料,其平均炉料配入比为46.2%废钢、9.1%生铁、26.4%热铁水、18.3%DRI,通过物料衡算和能量衡算分析了电弧炉冶炼过程的物耗和能量状况.论文研究得出了单位炉料对物耗和能耗的影响,以及四元炉料结构变化对吨钢电功率输入的需求范围为153～744kW.对大量生产数据进行逐步回归分析,结果表明:直接还原铁配入比RDRI的影响最为显著,每增加1.0%,吨钢电耗大约增加1.4kWh;其次是铁水配入比RHM,其每增加1.0%,吨钢电耗大约降低2.0kWh.

The 150 t EAF steelmaking of Tianjin Pipe Group Co.,Ltd uses four furnace charges for a long time,its average furnace charge is scrap of 46.2%,pig iron of 9.1%,hot molten iron of 26.4%,and DRI of 18.3%,the material and energy consumptions in the EAF steelmaking process were analyzed through the material and energy balance calculations. The influence of unit furnace charge on the material and energy consumptions in research process was obtained,as well as the input scope of electric power required by the compositions change of four furnace charge is 153～744 kW. Based on the stepwise regression analysis to the mass production data,it is found that the influence of RDRI is most remarkable. If it increases 1.0% every time,the electric power consumption per ton steel probably increases 1.4 kWh. Next impact factor is RHM. If it increases 1.0% every time,the electric power consumption per ton steel probably reduces 2.0 kWh.