Iron Loss in High-power Arc Steelmaking Furnaces

V. P. Karasyov, P. V. Kovalev, A. Z. Issagulov, V. Yu. Kulikov, Y. P. Chsherbakova. Saint-Petersburg State Polytechnic University, SaintPetersburg, Russia, Karaganda State Technical University, Karaganda, Kazakhstan There is considered the power operating mode of a high-power arc steelmaking furnaces (ASMF) in the period of the flat bath. It is revealed that electric energy is mainly spent for heating and overheating the foamed slag. Heat transferring from slag to metal is carried out by the convective agitation of the bath. For agitation there is used intensive purging of the bath with oxygen that causes increased iron losses with the running foamed slag. There are noted the negative points of working with the foamed slag. It is recommended to expand R&D in the field of optimizing the power operating mode of high-power ASMF.