WALL ELECTRODE FOR A METALLURGICAL DIRECT CURRENT ELECTRICAL FURNACE

摘要

1. Wall electrode for a direct-current electric metallurgical furnace, of the type comprising a metal bar intended to pass through the wall of the furnace such that one end comes into contact with a molten metal mass contained in the furnace, the other end projecting outside the furnace in the form of a portion enclosed in a sleeve made of thermally and electrically conductive material, energetically cooled by a flow of cooling fluid, and an end piece (9) made of a material which is a good conductor of electricity, with means (43) provided to connect the said end piece to an electrical supply terminal, wall electrode characterized in that the sleeve (8) closely surrounds the projecting portion (7) of the bar (4) so that a separation space (10) is formed between them during assembly.