Electrical connection device intended to be placed through the wall of an electrical direct-current metallurgical furnace
US4685112A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1986 |
| Grant date | Aug 4, 1987 |
| Priority date | — |
| Expiry date | Feb 10, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The device according to the invention consists mainly of: PA1 an inner part passing through the wall of the furnace and comprising a metal core 7 extended by a cooled plug 10, the free end of the core opposite to the plug being in contact with the molten mass of metal present in the furnace, PA1 a sleeve 11 made of thermally conductive material, which is cooled as a result of the circulation of a cooling fluid and which surrounds the core 7, PA1 and means 29 of connecting the metal core 7 to an electrical supply. The device according to the invention is characterized in that it also presents a separation space 12, formed between the sleeve 11 and the metal core 7, and an elastic fastening system 33, 34, 35 tending to return the said core 7 to its initial position given by assemblage. The device according to the invention is advantageously used as a hearth electrode in direct-current arc furnaces, specially for the iron and steel industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.