Abstract:
A current feed for an electrode of an electric smelting furnace. The current feed conductors lead to the electrode above the furnace hearth, and a current feed element surrounds the electrode and is arranged coaxially to the electrode and concentrically to the current feed conductors. Contact jaws are arranged concentrically to the electrode. The current-conducting cross section of the current feed element varies continuously from a maximum on the side away from the furnace axis to a minimum on the side adjacent to the furnace axis.
Abstract:
The contact urging pressure force is provided through corrosion proof bellows interposed between two covers, one being affixed to a cooled electrode carrier ring, the other one being provided for obtaining the contact urging force; the interior of the bellows contains springs opposing the hydraulic force, and further containing a check valve whose holding element is affixed to the second mentioned cover, closing the opening of the first mentioned cover as long as the hydraulic pressure does not exceed a certain amount.
Abstract:
A mechanically formed copper base plate has recesses machined in it and cover plates sealed over these recesses. The base plate is bent into an incomplete sleeve and connected to support means containing opposed clamping means which cooperate with this sleeve to provide an electrode holder.
Abstract:
The disclosed device comprises a generally circular slipping clamp for receiving the electrode, fluid power means for tightening the slipping clamp, spring means for loosening the slipping clamp, a plurality of suspension elements for suspending the slipping clamp and thereby supporting the weight of the electrode, a generally circular contact clamp disposed below the slipping clamp for receiving the electrode, spring means for tightening the contact clamp, fluid power means for loosening the contact clamp, a plurality of fluid power force exerting devices connected between the contact clamp and the slipping clamp for suspending the contact clamp and for producing relative movement between the contact clamp and the slipping clamp, a torquing clamp disposed above and supported by the slipping clamp, fluid power means for tightening the torquing clamp, spring means for loosening the torquing clamp, and fluid power force exerting means connected between the torquing clamp and the suspension elements for the slipping clamp for producing relative turning movement therebetween whereby screw joints between electrode sections can be tightened.
Abstract:
An electrode arrangement for passing into an electroarc or reducing furnace includes a plurality of cooling jacket capsules each surrounding an electrode and having at least two longitudinal openings each of angular width about 40 degrees; wearproofed current feeders are inserted, possibly insulatively embedded in the openings; one of the openings of each capsule facing the opening of another of the capsules.
Abstract:
Device for supplying current to self-consuming electrodes which are required to be advanced or lowered during operation, for example in an electrothermal reduction furnace. A plurality of current supply means encircling the electrode and spaced apart from each other by small slits is arranged above the furnace head. The individual current supply means are concentrically surrounded by a ring which forces them into elastic contact with the electrode, and are cooled separately.
Abstract:
An improved power supply equipment for an electric smelting furnace of large capacity, which is characterized in that a plurality of conductors conveying electric power to the lower part of an electrode, each of which is connected to each segment of an electrode holder, are arranged in a manner that said conductor is not located on the side of the electrode facing the furnace center, and said conductors are connected to a fixed input terminal block in a manner that densities of electric currents in all the conductors are as equal as possible.