ASH PROCESSING MELTING FURNACE AND ITS OPERATION METHOD

Title:

ASH PROCESSING MELTING FURNACE AND ITS OPERATION METHOD

Document Type and Number:

Japanese Patent JP2000074353

Kind Code:

A

Abstract:

To provide an ash processing melting furnace and its operation method in which maintenance work for removal of melts fixedly deposited on a lower electrode is eliminated, with good slag quality and with the low running cost.

There are provided an upper electrode 15 disposed vertically movably, a lower electrode 16 disposed on a hearth side while facing the upper electrode 15 and further disposed vertically movably in response to melting conditions of thrown ash 12, and an electric power supply apparatus 17 between both electrodes 15, 16 for switching an arc power supply 30 between hanging characteristics and a voltage adjustable resistance heating power supply 29 having constant voltage characteristic in response to load conditions for supply of electric power.

Inventors:

HIDAKA RYOTA
HARA TEIJI
IWAMOTO SHINJI
MATSUMOTO SHUICHI

Application Number:

JP26245098A

Publication Date:

March 14, 2000

Filing Date:

August 31, 1998

Export Citation:

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Assignee:

NIPPON STEEL CORP
NITTETSU PLANT DESIGNING CORP

International Classes:

B09B3/00; F23J1/08; F27B3/08; F27D11/08; F23J1/00; (IPC1-7): F23J1/00; B09B3/00; F23J1/08; F27B3/08; F27D11/08

Attorney, Agent or Firm:

Nakamae Fujio

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