The oxidized layer at the EAF bottom surface,which is made by MgO-CaO-Fe_2O_3 synthetic sand is disappeared and reproduced successively during operation.
MgO-CaO-Fe_2O_3合成砂构筑的电炉炉底,表面形成的氧化层不断地消失和再生,体现了陶瓷结合相进入主晶相和形成高熔点矿物的结构特征,从而实现长寿命炉底。
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