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用电弧炉炼钢时炉墙炉底在使用末期,难免有一部分镁砂掉下来,从炉底浮至钢液表面,这样容易使炉渣粘稠,结成死
EAF steelmaking furnace bottom at the end of the furnace, it is inevitable that a portion of magnesia fall, floating from the bottom of the molten steel surface, so easy to make the slag sticky, dead