| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a dephosphorization-treating method efficiently performing the dephosphorization in molten pig iron by controlling the additional timing of scrap, when the pre-dephosphorizing treatment in the molten pig iron is performed. <P>SOLUTION: A method for producing the low phosphorus molten pig iron is provided with a process for adding dephosphorizing agent into the molten pig iron in a furnace and a blowing process for stirring the molten pig iron by blowing gas from the furnace bottom while top-blowing oxygen gas, by using the converter-type furnace having both blowing functions at top and bottom. The whole or a part of scrap is added into the molten pig iron from the top of the furnace during the blowing process. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
