Oxygen injection lance
US4993691A · kind A · utility
5Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1989 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Aug 17, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21C5/4606
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A gas injection lance for use in metal refining is disclosed. The lance includes a tube having an inner diameter profile and a throttle member slidably received with the tube. The tube and throttle member define an annular gas flowpath. The throttle body may be moved axially within the tube to modify the characteristics of the flowpath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.