The results show that threeelectrode DC ladle furnace, increasing heating speed and without arc bias, can overcome the shortcomings of bottom-electrode DC ladle furnace.

• 试验表明，三电极直流钢包炉技术可解决底电极式直流钢包炉存在的不足，使炉子加热速度快和不发生偏弧现象。