Nozzle for an oxygen injection lance for decarburization of pig iron and use for the decarburization of chromium containing pig iron
US4455166A · kind A · utility
6Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1981 |
| Grant date | Jun 19, 1984 |
| Priority date | — |
| Expiry date | Aug 14, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21C5/005
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A nozzle is disclosed for use in the decarburization of molten pig iron by means of a jet of oxygen from a lance provided with such nozzle. The nozzle according to the invention is characterized by a divergent portion which, beyond the neck, has a frustoconical part, with an apex angle of between 60.degree. and 70.degree. and preferably between 62.degree. and 66.degree., and wherein an angle of 65.degree. is preferred. The nozzle according to the invention can be used in particular for the decarburization of chromium containing pig iron and makes it possible to achieve very high chromium and iron yields.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.