| 摘要 |
PROBLEM TO BE SOLVED: To provide a stable dephosphorize-refining method of molten iron while reducing a produced slag. SOLUTION: Following processes are provided. (a) Molten iron having <=0.2 wt.% Si content is charged into a converter. (b) A CaO component is charged by <=18 kg/ton with lime and the molten iron is refined with oxygen blowing. Further, it is desirable to substantically and continuously charge the lime at least for two min after starting the dephosphorize-refining. Furthermore, it is desirable to use a part of the CaO component with the lime as premelt flux. |
