Dispersing gas into molten metal
US4898367A · kind A · utility
129Cited by
11References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1988 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Jul 22, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21C7/072
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Gas is dispersed into molten metal by immersing a shaft-supported impeller into the molten metal and by pumping gas through the shaft and out of the impeller. The impeller is in the form of a rectangular prism having sharp-edged corners that shear the gaas into finely divided bubbles. The particular shape of the impeller provides an especially effective bubble-shearing and bubble-dispersing action.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.