F - Mech Eng,Light,Heat,Weapons – 27 – D
Patent
F - Mech Eng,Light,Heat,Weapons
27
D
F27D 11/04 (2006.01) C21C 5/52 (2006.01) F27D 11/10 (2006.01) H05B 7/06 (2006.01)
Patent
CA 2082000
Direct-current electric arc furnace with an at least one, in this case centered electric arc electrod switched as cathode and with a bottom electrode switched as anode connected with a busbar arrangement, in which the bottom lining consists, at least for the preponderant part, of an electrically non-conducting ramming mass into which electrically conducting metal parts in the form of sheet metal inserts, pins or rods are introduced, the upper front faces of which are in conducting contact with the melt, characterized in that a plurality of electrode segments are disposed in vertical position on the electrical feed line made in the form of a bottom plate in direct area contact with same, the totality of which make up an electrode ring, that on each electrode segment a plurality of segment conductors with low cross sectional areas are running in upward direction through the said ramming mass, which are the electrically conducting metal parts fastened in radial arrangement.
Four électrique à arc à courant continu comportant, à sa partie supérieure, au moins une électrode commutée en cathode et, à sa partie inférieure, une électrode commutée en anode, celles-ci étant reliées à une barre omnibus; le revêtement du four consiste, de manière prépondérante, d'un pisé à damage non conducteur dans lequel des pièces métalliques conductrices diverses, tôles, pointes, tiges , etc. ont été introduites, et dont les portions saillantes viennent en contact avec les matières en fusion, et caractérisé par la une pluralité de segments d'électrode disposés en position verticale sur le conducteur d'alimentation en forme de plaque en contact direct avec celle-ci, l'ensemble formant un anneau d'électrode, et par une pluralité de segments conducteurs de faible section traversant le pisé à damage et orientés vers le plafond du four dans une configuration radiale.
Mcfadden Fincham
Voest-Alpine Industrieanlagenbau Gmbh
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