Apparatus for refining molten aluminum
US5158737A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1991 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Apr 29, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B21/064
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A gas distributor for an apparatus for refining molten metal, the distributor being positionable in a vessel with a heat source for heating the metal and inlets and outlets for metal and gases. The distributor includes a stationary unit and a rotating unit, with the rotating unit including a rotor carried on the lower end of a shaft rotatably positioned within the stationary unit, and with the stationary unit including a stator carried at the lower end of a sleeve, with the rotor having a frusto-conical upper surface and the stator having a mating frusto-conical lower surface with an outward gas flow path between the mating surfaces into the vessel. Also, a gas flow path is provided into the vessel downward from the lower end of the rotating unit. Further the stator and rotor have vanes at the outer surfaces thereof defining oblique channels which converge in the downward direction, with the rotor diameter preferably greater than the stator diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.