| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a device for manufacturing molten metal capable of easily taking a mechanical means for securely solving hanging of a clumpy metal material layer in a furnace when it occurs. <P>SOLUTION: A raw material A for forming a filled layer and a clumpy metal material B are charged in this order from material charging chutes 4, 4 at both ends 2, 2 of furnace width of a fixed type non-tilting type arc furnace to form a material-filled layer 12 having a downward slope going to a lower part of an electrode 5 at the center of the furnace width and the clumpy metal material layer 13 on the slope. Thereafter, the molten metal manufacturing device sequentially melts a lower end of the clumpy metal material layer 13 by arc heating of the electrode 5 to manufacture molten iron. While lowering the clumpy metal material layer 13 along the slope of the material-filled layer 12, the device burns CO-containing gas generated from the clumpy metal material layer 13 by oxygen-containing gas C blown from a secondary combustion burner 6 of a ceiling part 1 and heats the clumpy metal material layer 13 by the radiation heat. A furnace bottom part 16 is formed to have a stair-like part going downward from both ends 2, 2 of the furnace width to the center of the furnace width. <P>COPYRIGHT: (C)2011,JPO&INPIT |
