A review of the literature on the development of electric steelmaking at metallurgical plants indicates the possibility and efficiency of combining arc melting of steel and its extra-furnace treatment by well-known methods. The possibilities of combined steel melting using metallized iron-ore raw materials (MIORM) and scrap metal, followed by extra-furnace treatment of liquid steel with inert gases and continuous casting of steel are analyzed. This study is novel in the use of gas afterburning and distributed feed of MIORM to the bath of an electric ladle furnace unit, partially or not using scrap metal. It is shown that the energy and technology features of the new ladle furnace during arc steel melting combined with extra-furnace treatment are comparable in efficiency and steel quality to those of a typical arc furnace.