| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for blending materials by which as steelmaking raw material for electric furnace, Cu content as harmful element to the steel is guaranteed to <0.20% and cheap waste car pressed scraps are used as much as possible. <P>SOLUTION: In the method for realizing the cheap scrap blending, the waste car-pressed scrap is used as much as possible in the scrap-blending combined based on the influence on the Cu value when the blended scrap in one heat melted with the electric furnace is tapped off from the electric furnace, in the range satisfying formula (1); 0.20>0.000A+0.083B-0.066C+1.469D-0.066E+0.083F+0.017G+0.12. In formula (1), respective weights of A to F are expressed by ton unit. wherein A: returned scrap in the work, B: purchased scrap, C: new shearing scrap, D: waste car pressed scrap, E: waste pig iron, F: machining chip and G: pressed can scrap. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
