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<p>A&#xa0;comparison of the energy parameters of melts in arc steelmaking furnaces with capacities of 100 and 180 t of metal, EAF-100 and EAF-180 respectively, was performed. The calculations showed that, when using scrap metal as the charge, the coefficient of useful heat utilization from the arcs in the EAF-100 furnace is 0.78–0.80 and the specific electricity consumption is 360 kWh/t. Under similar conditions in the EAF-180 furnace, the corresponding values are 0.70 and 390 kWh/t, respectively. The lower arc efficiency and higher specific electricity consumption of the EAF-180 compared to the EAF-100 are caused by the greater distance of the arcs from the furnace walls and the necessity of operating with arcs that are not fully submerged in the bath. This results in radiated heat flux to the charge on the slopes. In the EAF-100, heat conduction from the hot zones under the arcs to the charge on the slopes is sufficient to melt the charge; the arcs are fully submerged in the slag, resulting in high arc efficiency and low specific electricity consumption.</p>

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Energy parameters of melts in EAF-100 and EAF-180 electric arc furnaces

  • 期刊论文

  • 发表日期：

    2025年10月7日

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  • A. N. Makarov,
  • N. V. Milyutin

摘要

A comparison of the energy parameters of melts in arc steelmaking furnaces with capacities of 100 and 180 t of metal, EAF-100 and EAF-180 respectively, was performed. The calculations showed that, when using scrap metal as the charge, the coefficient of useful heat utilization from the arcs in the EAF-100 furnace is 0.78–0.80 and the specific electricity consumption is 360 kWh/t. Under similar conditions in the EAF-180 furnace, the corresponding values are 0.70 and 390 kWh/t, respectively. The lower arc efficiency and higher specific electricity consumption of the EAF-180 compared to the EAF-100 are caused by the greater distance of the arcs from the furnace walls and the necessity of operating with arcs that are not fully submerged in the bath. This results in radiated heat flux to the charge on the slopes. In the EAF-100, heat conduction from the hot zones under the arcs to the charge on the slopes is sufficient to melt the charge; the arcs are fully submerged in the slag, resulting in high arc efficiency and low specific electricity consumption.