| 摘要 |
<p>PURPOSE:To provide a means, which can reduce the grading cost of scrap charge into a blast furnace and easily execute distribution control. CONSTITUTION:The scrap 10 is charged into the center part (within 1/2 of the diameter) of a furnace after charging ore or coke. The distribution uniformities of the grain size and the kind of scrap in the circular direction is maintained and the distribution control in the radial direction is facilitated and the grading cost of the scrap 10 can drastically be reduced.</p> |
