H - Electricity – 05 – B
Patent
H - Electricity
05
B
307/21
H05B 7/18 (2006.01) C21C 5/52 (2006.01) F27D 11/08 (2006.01) H05B 7/06 (2006.01)
Patent
CA 1232933
A B S T R A C T In a direct current electric arc furnace with at least one movable eletrode and at least one part of the bottom of the furnace of electri- cally conductive material, used as return electrode, that part of the furnace bottom is formed of an assembly of diverse parts that work together, namely: - An easily removable electrically conductive prefabricated element in contact with the metal bath - An intermediate part of electrically conductive granular material which, in itself, is known - A terminal metal part, in contact with the intermediate part, elect- rically insulated from the shell of the furnace, consisting of a metal collector plate whose upper surface is in contact with the intermediate part, and having a terminal metal rod on the lower face, said lower face and metal rod being in contact with a non-conductive refractory material; the extremity of the metal rod protrudes out- side the furnace, is cooled and is connected to the power supply. The furnace bottom can also include at least a porous body for blow- ing gas into the metal bath.
467180
Marafini Fabrizio
Repetto Eugenio
Tesini Francesco
Italimpianti - Societa Italiana Impianti P.a.
Robic Robic & Associes/associates
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