Reaction Behavior of High‐Manganese High‐Aluminum Steel with Glazed MgO Refractory

In order to explore the reaction mechanism of high‐manganese high‐aluminum steel and glazed MgO refractory, a series of high‐temperature reaction experiments are carried out with Fe‐30Mn‐2Al‐C high‐manganese and high‐aluminum steel and three kinds of glazed MgO refractory (the basicity of ladle glaze was 4, 8, 12 respectively) as the research objects. The changes in the thickness and composition of the ladle glaze are determined and the corrosion behavior of high‐manganese high‐aluminum steel on MgO refractory is investigated. The results show that the lower the basicity of the ladle glaze, the easier the ladle glaze falls off after the reaction. The [Mn] and [Al] in the high‐manganese high‐aluminum steel will transfer to the ladle glaze and form MnO, (Mn, Mg)O·Al 2 O 3 spinel, and 2CaO·Al 2 O 3 . The [Mn] in the high‐manganese high‐aluminum steel will enter the MgO refractory and form (Mn, Mg)O solid solution, thus eroding the refractory. The (Mn, Mg)O·Al 2 O 3 spinel formed in the ladle glaze layer can hinder the diffusion of [Mn] and [Al] in the molten steel to the refractory, thereby reducing the erosion of the refractory.