MELTING FURNACE STARTING-UP METHOD

Japanese Patent JP3436467

B2

PROBLEM TO BE SOLVED: To provide a melting furnace starting-up method which is designed to reduce load of a waste gas treatment plant by reducing work load which digs a condensed substance in the furnace and protecting a furnace main body in the digging work of this condensed substance and reducing the generation amount of gas.
SOLUTION: Charged incineration ashes are heated by the application of power to a melt with electrodes 2 provided in a melting furnace, and a lower molten metal forming the lower layer and a molten slag forming the upper layer out of the furnace are extracted separately. The starting-up method of the melting furnace is arranged to leave the molten slag S by a proper depth during the operation interruption time of the melting furnace. When restarting the operation, the top of the solidified slab S is slightly dug, thereby forming a recessed area 7. An electric conductive material 8 is provided in the recessed area 7 and the electrodes 2 are arranged to drop into contact with the electric conductive material 8 where the incineration ashes or ground slag S1 are supplied to the recessed area 7 and the electric conductive material 8 is covered therewith and then electrically energized with the electrodes 2.

Tetsuo Akashi
Taro Iguchi
Masao Sakai

JP35238596A

August 11, 2003

December 13, 1996

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JFE Engineering Corporation

F23J1/00; F23G5/50; F27B3/08; F27D11/08; (IPC1-7): F23J1/00; F23G5/50; F27B3/08; F27D11/08

JP861626A
JP60263007A
JP5680613A
JP5172472A
JP59102229A

Toru Fujioka

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