To provide a producing apparatus for more increasing secondary combustion efficiency when producing molten metal by directly reduction-melting a lumpy metal raw material layer with an electric heating furnace.
Raw material charging chutes 4,4 at both edge parts 2,2 in the furnace width direction, electrodes 7 at the center part in the furnace width side and secondary combustion burners 6 at the furnace roof part 1 having downward stepping portion toward the electrodes 5 from both edge parts 2,2 in the furnace width direction, are respectively set, and a raw material filling-up layer 12 having downward inclining surface toward the lower part of the electrodes 5 is previously formed by charging carbonaceous material A from the chutes 4, 4. Successively, the lumpy metal raw material B is charged to form the lumpy metal raw material layer 13 on the inclining surface of the raw material filling-up layer 12, and thereafter, the lower end part of the lumpy metal raw material layer 13 is melted in order by performing arc-heating with the electrodes 5 to produce molten iron and also, while dropping the lumpy metal raw material layer 13 along the inclining surface of the raw material filling-up layer 12, CO-containing gas generated from the lumpy metal raw material layer 13 is burnt with oxygen-containing gas C blown from the secondary combustion burner 6 and the lumpy metal raw material layer 13 is heated with this radiated heat.
| JP2003183715A | 2003-07-03 | |||
| JP2003105415A | 2003-04-09 | |||
| JPS59134482A | 1984-08-02 | |||
| JPS5178711A | 1976-07-08 | |||
| JPS51101309U | 1976-08-14 | |||
| JPS49124651A | 1974-11-28 | |||
| JP2003183715A | 2003-07-03 | |||
| JP2003105415A | 2003-04-09 | |||
| JPS59134482A | 1984-08-02 | |||
| JPS5178711A | 1976-07-08 | |||
| JPS51101309U | 1976-08-14 | |||
| JPS49124651A | 1974-11-28 |
Makoto Suhara
Takenaka Yoshimichi
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