Trough shear diffusor apparatus for fluxing molten metal and method
US4714494A · kind A · utility
6Cited by
4References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1986 |
| Grant date | Dec 22, 1987 |
| Priority date | — |
| Expiry date | Dec 8, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B9/055
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A system for purification of molten metal to remove impurities such hydrogen gas and alkali elements therefrom is disclosed which comprises passing the molten metal through an enclosed passageway at a velocity of at least about 0.1 cm/sec and introducing a sparging gas into the passageway whereby the velocity of the molten metal will shear off bubbles of the sparging gas as they are formed resulting in smaller bubbles with larger gas/molten metal interface area to achieve maximum contact between the sparging gas and the molten metal to enhance removal of impurities from the molten metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.