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作为廉价的冶炼方法，电弧炉的作用愈来愈明显。就经济效益和环境保护而言，通常的交流和直流电弧炉还不是最理想的。一项新研究的目的就是要超越目前的这种状态。现在已开发了一种称之为“Ｃｏｍｅｌｔ”的新型直流电弧炉，它有几根从侧面倾斜插入电炉的电极，并在电极轴线上产生一束移动的倾斜电弧。在电炉中间部位的竖炉中可以利用熔炼过程的炽热废气预热全部废钢以及在各操作阶段收集全部废气。这种“Ｃｏｍｅｌｔ”方法显示出了很多在经济和生态方面的优点。这种电弧炉的投资回收率（ＲＯＩ）超过３０％，投资回收期大约只有３年。
As an inexpensive smelting method, the role of electric arc furnace is more and more obvious. In terms of economic efficiency and environmental protection, the usual exchange and DC electric arc furnace is not ideal. The purpose of a new study is to go beyond this current state. A new type of DC electric arc furnace, called “Comelt”, has been developed which has several electrodes tilted sideways into the furnace and produces a moving, tilting arc on the axis of the electrode. In the shaft furnace in the middle of the electric furnace, the hot scrap of the smelting process can be used to preheat the entire scrap and to collect the entire exhaust gas during each operating phase. This “Comelt” method shows many economic and ecological advantages. The EAF has a return on investment (ROI) of more than 30% and an investment payback period of only about three years.