Title:
DC ELECTRIC FURNACE
Document Type and Number:
Japanese Patent JP3108901
Kind Code:
B2
Abstract:
PURPOSE: To provide a DC electric furnace in the operation of which preheated metal material is fed to the middle inside the furnace body simultaneously with preheating of the metal material by exhaust gas at an increased efficiency so that the efficiency of electric energy to melt metal material can be increased.
CONSTITUTION: In the middle inside a furnace body 1 an upper carbon electrode 3 is placed, designed to be lowered and lifted through a through hole 6 formed at a point in a preheating tower 5 which is provided above a furnace lid 4 and has a part leaning. The lower end of the preheating tower 5 is positioned in the middle of the furnace body 1. The preheating tower 5 has a charging hole inside through which metal material 7 is fed and an exhaust-gas duct 10 by which the exhaust gas is conveyed to dust-collecting equipment.
Inventors:
Makoto Takahashi
Application Number:
JP14407894A
Publication Date:
November 13, 2000
Filing Date:
June 03, 1994
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C21C5/52; F27B3/08; F27B3/18; F27D13/00; (IPC1-7): F27B3/08; C21C5/52; F27B3/18; F27D13/00
Attorney, Agent or Firm:
Spring Inoue (1 person outside)