电弧炉期间产生的高温烟气包含有大量的显热和化学能 ,特别是采用吹氧作业的电弧炉 ,充分回收利用这部分能量来预热废钢炉料可以大幅度降低电能消耗 ,提高经济效益。在对废钢进行预热时 ,热烟气通过废钢料柱 ,在把热量传递给废钢 ,升高废钢温度的同时 ,烟气中的大量粉尘也被过 The high temperature flue gas generated during the EAF contains a large amount of sensible heat and chemical energy. Especially the EAF with oxygen blowing operation, the full recovery and utilization of this part of the energy to preheat the scrap charge can greatly reduce power consumption and improve economic efficiency. While preheating the scrap, the hot flue gases pass through the scrap column, transferring large amounts of dust to the flue gas as it transfers heat to the scrap and raises the temperature of the scrap