Charging device for a shaft furnace
US5829968A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1996 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Jun 27, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21B7/18
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A charging device for a shaft furnace with a lower bell comprises lower means of blockage allowing an upper hopper to be isolated in a sealed manner from a lower hopper and allowing the retention of the charging material. In their open position, these lower means of blockage are positioned so that they unblock a free central passage for the flux of material. This flux is established in the form of a compact and focused flux. Means for moving the lower bell are positioned so as not to disturb the focusing of this flux. Positioned above the lower bell is a deflecting surface, which causes the focused flux to diverge with axial symmetry. Inter alia, a better symmetry in the filling of the lower hopper is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.