Bath electrode for pot furnace

Details Bath electrode for pot furnace Bath electrode for pot furnace

1985-06-20

1987-12-22

Envall, Jr., Roy N.

Industrial electric heating furnaces

Arc furnace device

Furnace body detail

373108, H05B 702

Patent

active

047150416

ABSTRACT:
To assure a high degree of operating reliability during operation of pot furnaces, their bath electrode (2, 14, 17, 20) in the pot (1) must be cooled intensively by external cooling. If the pot (1) is in the pot furnace station, cooling of the bath electrode (2, 14, 17, 20) is not a problem. But the case is different when the pot (1) is transported to various stations which can be geographically far apart--e.g., on the one hand, to a melting furnace and, on the other hand, to a continuous casting machine. In the latter case, feed and removal devices for a coolant have been constantly carried with the pot (1). However, this makes a considerable expense necessary. By the dimensioning according to the invention of the bath electrode (1, 14, 17, 20) and/or by attachment of additional cooling bodies (15, 18, 22, 14), the bath electrode (2, 14, 17, 20) can be successfully uncoupled from external cooling (8, 9, 10) over the relatively long handling period that is necessary for operational requirements. By the steps according to the invention, the bath electrode (2, 14, 17, 10) can be kept under the critical temperature during the period of uncoupling from the cooling (8, 9, 10), e.g., in the area of its electric connection (11). Moreover, by said steps the liquid/solid boundary layer between the melt (4) and the front surface of the bath electrode (2, 14, 17, 20) can be kept stable in position at the end of the preset time of the uncoupling in comparison with the beginning of the uncoupling.

REFERENCES:
patent: Re17954 (1931-02-01), Mills
patent: 1100993 (1914-06-01), Snyder
patent: 1271093 (1918-07-01), Snyder
patent: 4145562 (1979-03-01), Stenkvist

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