Slag mode regulation in electric arc furnace based on electrical parameters control during melting oxidation period

The results of observation steelmaking oxidation stage at EAF-135 were analyzed with automated control system the electrical characteristics. There are three main zones in furnace working space, which differ by aggregate state materials them: arc discharge, melt and foamed slag. distribution data electric power over is given. active powers asymmetry arcs under single electrodes affected short network. It shown that factors impacting slag resistances oxygen blow electrode movement. authors studied influence magnesia flux feeds on resistance. These correspond to a sharp increase subsequent gradual decrease resistance, time for assimilation additives does not exceed one minute. average parameters space given heats. A comparison was made nature change discharge temperature. profiles match changes these characteristics an corresponds An attempt correlate FeO content did give positive result. However, this methodology should be tested conditions steel refining ladle-furnace unit. noted parameter changing due overwhelming intense blast, mixing displacement meet reliability criterion.