(1) Any proportion of pig iron and scrap steel can be used as the furnace charge, that is, a large amount of cheap scrap steel can be used as the furnace charge;
(2) Molten iron with a wide range of compositions can be smelted (including high-phosphorus molten iron);
( 3) The smelting process is easy to operate and control;
(4) It can produce various high-quality steel types.