Oxidation Rate of Solid Iron Using an Ar–H₂O Mixture through CaO–SiO₂–Al₂O₃–FeO Slag

摘要

Various measures have been developed to control slag foaming, which often causes operational problems during the BOF process. Although anti-foaming agents, which con- tain carbonaceous materials such as pulverized coke,’ are usually added to the foamed slag, the additional carbon input during the steelmaking process causes an increase in COy emissions. Therefore, the development of a new anti- foaming technology that does not use general carbon- containing materials is a favorable alternative. Steam jet injection into foamed slag may control the foaming, not only mechanically but also chemically. The injected steam reacts with iron droplets in the slag according to reaction (1), pro- ducing hydrogen and FeO.