H - Electricity – 05 – B
Patent
H - Electricity
05
B
H05B 7/11 (2006.01) F27B 3/08 (2006.01) F27D 11/10 (2006.01) H05B 7/06 (2006.01)
Patent
CA 2049853
ABSTRACT OF THE DISCLOSURE A direct-current arc furnace has a furnace vessel which is surrounded by a metal shell, having at least one electrode connected as the cathode, and at least one bottom contact. The bottom of the furnace consists of a single or multiple lining layer which possesses electrically conducting bricks or other equally acting inserts. The lining layer lies on a contact plate covering most of the bottom, which con- tact plate forms the bottom contact connected as the anode and lies on a bottom plate. The contact plate is equipped with a plurality of connection fittings which pass through openings in the bottom plate and are connected via electric lines to a current-supply- ing device provided next to the furnace vessel. One or more sections of the lining layer are composed of a material which possesses a lower electrical con- ductivity than the lining layer in the remaining sec- tion for the intentional deflection of the arc.
Brown (asea) Boveri Ltd.
Stenkvist Sven-Einar
Swabey Ogilvy Renault
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