Method and apparatus for protection of metal heating electrodes

Details Method and apparatus for protection of metal heating electrodes Method and apparatus for protection of metal heating electrodes

1975-04-30

1976-10-05

Moose, Harry

13 23, C03B 502

Patent

active

039846121

ABSTRACT:
Metal heating electrodes of melting furnaces are protected against reduction of ions from a silicate melt by superposition of DC current on the AC heating current and by forming and maintaining on these electrodes a passivation layer with a higher electric specific resistance than the resistance of the melt.

REFERENCES:
patent: 2855450 (1958-10-01), Eden
patent: 3378618 (1968-04-01), Vach et al.
patent: 3530221 (1970-09-01), Penberthy

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