Device for charging an electric arc furnace through its inner el

Details Device for charging an electric arc furnace through its inner el Device for charging an electric arc furnace through its inner el

Filed on

1975-09-22

Date issued

1977-08-02

Examiner

Envall, Jr., H. N.

Other Related Categories

13 18, H05B 714

Type

Patent

Status

active

Patent number

040397386

Description

ABSTRACT:
Apparatus for charging an electric arc furnace comprising a casing with side charging pipe and two holes in the casing one in the bottom portion of the casing for mounting the device on the electrode inner pipe, and the other in the upper portion of the casing covered by a valve which can be moved between open and closed positions. In the closed position the valve is pressed from below to close the upper hole, and in the open position it is pivoted downwardly for insertion in the hole of an additional length which is joined at its lower end to the electrode inner pipe. Access is provided to the interior of the electrode and to the sub-electrode space of the furnace while preventing emission of toxic furnace gases from the furnace into the atmosphere.

REFERENCES:
patent: 1640735 (1927-08-01), Soderberg
patent: 3471626 (1969-10-01), De Weese et al.
patent: 3604826 (1971-09-01), Muller et al.

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