Application Practice of 40 t Super Electric Arc Furnace
Electric arc furnace steelmaking has the characteristics of short process,green,and energy-saving,and is an important path for the recyclable and green development of the steel industry in the future.Through years of self innovation and technological precipitation,CISDI has overcome the bottleneck of multi electrode split control regulation and real-time interactive and collaborative regulation of DC power output power.It has developed a new type of ultra-high power flexible IGBT DC power supply and flexible DC high-efficiency power supply technolo-gy,and combined with new technologies such as electric furnace body and needle bottom anode to form a new generation of efficient,low con-sumption,green and environmentally friendly super arc furnace technology and equipment.It introduces the technical characteristics of the su-per electric arc furnace equipment,flexible DC power supply,and air-cooled bottom electrode,as well as the transformation and application of a 40t electric arc furnace in a certain factory.Industrial production practice has shown that the super electric arc furnace can effectively short-en the smelting cycle by 7 minutes,reduce the electrification time by 5 minutes,reduce the smelting power consumption by 13 kW·h/t of steel ingots,reduce electrode consumption by 1.8 kg/t of steel ingots,improve metal yield by 2.34％,significantly reduce production costs,and improve product quality.
DC EAFIGBT flexible DC power supplyneedle type air-cooled bottom electrodeindustrial application
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