| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enable to surely prevent the elusion of hexavalent chromium when reusing oxidized slag generated when the chromium-contained steel is produced. <P>SOLUTION: In a method for reusing the oxidized slag generated when the chromium-contained steel is produced, the oxidized slag having a composition after melting and refining, consisting of, by mass, 35-55% CaO, 5-20% SiO<SB>2</SB>, 0.5-15% Al<SB>2</SB>O<SB>3</SB>, 3-15% MgO, 2-15% MnO, 0.05-0.5% CaF<SB>2</SB>, 10-30% T.Fe, 0.2-6.0% Cr<SB>2</SB>O<SB>3</SB>and the balance inevitable impurities is cooled so that the amount of ore phase in which manganese element forms a solid solution in the iron-oxide of the oxidized slag, becomes≥12.5 mass%. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
