Ladle furnaces are known for their high power consumption,making research on power-saving process crucial.In response to the defect of thin slag thickness in the industrial production of a 120-t ladle furnace at a ste...Ladle furnaces are known for their high power consumption,making research on power-saving process crucial.In response to the defect of thin slag thickness in the industrial production of a 120-t ladle furnace at a steel plant,with its production of ship plate steel DH36 as the focus,experiments involving adding the foaming agent and shifting power delivery gears were conducted.Based on the principle of measuring alternating current by Rogowski coils,the power consumption during the ladle furnace refining process was calculated theoretically,and the actual industrial power consumption matched with it basically,confirming the accuracy of the theoretical calculations.Additionally,the impacts of argon flow rate,foaming agents,and shifting power delivery gears on power consumption were studied.The results showed that adding 0.59 and 0.50 kg/t foaming agents in two batches improved the refining process of the ladle furnace,allowing for effective submerged-arc operations and saving electric energy of 7.2382 kWh per ton of steel.Similarly,utilizing a power supply mode of 7-step short arc during the refining process significantly enhanced the desulfurization rate of molten steel and saved electric energy of 11.6387 kWh per ton of steel.展开更多
基金The authors gratefully express their appreciation to the National Natural Science Foundation of China(51834002)for sponsoring this work.
文摘Ladle furnaces are known for their high power consumption,making research on power-saving process crucial.In response to the defect of thin slag thickness in the industrial production of a 120-t ladle furnace at a steel plant,with its production of ship plate steel DH36 as the focus,experiments involving adding the foaming agent and shifting power delivery gears were conducted.Based on the principle of measuring alternating current by Rogowski coils,the power consumption during the ladle furnace refining process was calculated theoretically,and the actual industrial power consumption matched with it basically,confirming the accuracy of the theoretical calculations.Additionally,the impacts of argon flow rate,foaming agents,and shifting power delivery gears on power consumption were studied.The results showed that adding 0.59 and 0.50 kg/t foaming agents in two batches improved the refining process of the ladle furnace,allowing for effective submerged-arc operations and saving electric energy of 7.2382 kWh per ton of steel.Similarly,utilizing a power supply mode of 7-step short arc during the refining process significantly enhanced the desulfurization rate of molten steel and saved electric energy of 11.6387 kWh per ton of steel.
