Han Shenghai,Wei Guangsheng,Zhang Yabin,et al.Phased Optimization Process for Shaft Electric Arc Furnace Smelting with High Hot Metal Ratio[J].Special Steel,2026,47(03):59-65.
Han Shenghai,Wei Guangsheng,Zhang Yabin,et al.Phased Optimization Process for Shaft Electric Arc Furnace Smelting with High Hot Metal Ratio[J].Special Steel,2026,47(03):59-65.DOI: 10.20057/j.1003-8620.N250558.
Phased Optimization Process for Shaft Electric Arc Furnace Smelting with High Hot Metal Ratio
Focusing on the novel vertical electric arc furnace (EAF) process coupled with hot metal charging, this study conducted a systematic analysis and optimization of the process to address practical production issues such as high electricity consumption per ton of steel, endpoint over-oxidation, and prolonged smelting cycles. Through in-depth analysis of key process parameters including charging rhythm, oxygen supply regime, and energy input, a phased optimization strategy was proposed. This strategy systematically divides the process into three components: adjustment of scrap steel and hot metal ratio, optimization of oxygen lance operation, and enhancement of scrap preheating.Industrial trials demonstrated that after implementing the phased optimization, the electricity consumption per ton of steel was reduced to 188.70 kWh,a decrease of 15.30 kWh, the smelting cycle was shortened to 38.45 min (a reduction of 3.84 min), and the endpoint oxygen content reached 5.19×10⁻⁶, indicating significant mitigation of over-oxidation. Both energy efficiency and production rhythm were substantially improved. This study validates the effectiveness of the phased control strategy and provides a systematic technical solution along with practical evidence for achieving efficient and stable operation of vertical EAFs under high hot metal ratio conditions.
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