Lance ladling
US4389245A · kind A · utility
3Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1981 |
| Grant date | Jun 21, 1983 |
| Priority date | — |
| Expiry date | Oct 14, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21C7/064
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method and apparatus for concurrent introduction of molten steel and gas-fluidized chemical steel additives, such as chemical desulphurants, into a teeming ladle 10. Injection apparatus includes a lance 52 arranged to remain with the vessel. Introduction of gas-fluidized additives through a lance opening 81 is commenced while a charge of molten steel is introduced into the ladle. The lance is unobstructed at its discharge end and in one embodiment is carried directly by a discharge stopper 31".
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.