摘要
当前,电弧炉炼钢广泛采用底吹技术以强化熔池搅拌、加速冶金反应和提升产品质量。本文通过数值模拟和水模型实验研究了底吹条件下电弧炉炼钢熔池内流体流动特性,分析了底吹流股对流体流动的影响作用规律。同时结合工业生产实测数据,发现电弧炉底吹技术的运用可通过强化熔池搅拌,加快了熔池内热量传递,均匀了熔池钢液温度,大大提高了冶炼过程热量的利用效率。
Bottom-blowing technology is widely adopted in electric arc furnace(EAF) steelmaking to promote the molten bath fluid flow,accelerate the metallurgical reaction and improve the quality of molten steel.In this study,a water model experiment and a computational fluid dynamics(CFD) model were established to investigate the fluid flow characteristics of molten bath with bottom-blowing in EAF steelmaking process and analyzed the effects of bottom-blowing gas on the fluid flow.Meanwhile,based on industrial application research,the heat transfer in the molten bath with bottom-blowing was analyzed.Compared with traditional smelting conditions without bottom-blowing,bottom-blowing technology demonstrates obvious advantages in promoting the heating rate and the temperature homogeneity of molten bath.
引文