Plasma fired feed nozzle
US4761793A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 1987 |
| Grant date | Aug 2, 1988 |
| Priority date | — |
| Expiry date | May 8, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21B13/125
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A plasma feed nozzle 3 for a furnace 1 which has a tubular mixing chamber 7 open at one end to the furnace, a plasma torch 13 which provides superheated gases axially to the central portion of the mixing chamber 7, shroud gases which enter the end of the mixing chamber opposite the end open to the furnace in such a way as to swirl as it moves axially through the mixing chamber 7 to provide a temperature profile which is substantially hotter in the central portion of the mixing chamber 7 than adjacent the wall portion thereof and a particulate feed nozzle 25 disposed to direct particulate material to the central portion of the mixing chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.