FURNACE FLOOR OF DC ELECTRIC FURNACE AND EXECUTION METHOD THEREFOR

Japanese Patent JP3130208

B2

PURPOSE: To obtain a furnace floor having low electric reistance by using scaly graphite powdered materials or graphitized carbon fiber felt or a mixture of the both as joint materials for a joint between a metal plate and a permanent brick and for a joint between the permanent brick and a wear brick.
CONSTITUTION: A furnace floor of a DC electric furnace is constructed with an electrode plate made of a metal (mainly, copper plate) forming a furnace bottom, electrically conductive bricks (mainly, burned MgO-C bricks) with which the electrode plate is lined and which are usually stacked in two stages on the upper part of the electrode plate, and a stamp material constituting the furnace floor. An electric current is caused to flow through these layers. In this case, for a joint between the metal plate that is the electrode and a permanent brick and for a joint between the permanent brick and a wear brick, a scaly graphite powdered material having a mean particle size of 0.12 to 0.5mm or graphitized carbon fiber felt is used as a joint material. Further, the burned MgO-C bricks containing 8 to 25wt.% of graphite are used as the permanent and wear bricks.

Tsuguo Yukinawa
Koichi Suzuki
Tsukasa Sugano
Nakamori Yoshimi

JP15816594A

January 31, 2001

June 17, 1994

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Asahi Glass Co., Ltd.
Mitsubishi Steel Muroran Special Steel Co., Ltd.

C04B35/66; F27B3/08; F27B3/14; F27D1/00; F27D1/16; F27D11/08; (IPC1-7): F27B3/08; C04B35/66; F27B3/14; F27D1/00; F27D1/16; F27D11/08

JP823475B2
JP428990B2
JP5502503A

【文献】特許2605024(JP,B2)

Kawawa Takaho

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