Gas stirrer
US4139184A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1977 |
| Grant date | Feb 13, 1979 |
| Priority date | — |
| Expiry date | Jun 13, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D1/005
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A vessel, particularly a ladle, and method for mixing molten metal. The vessel is adapted to be used in an upright position and has bottom openings, including at least one first opening for the introduction of gas under pressure to stir the contents, and a second opening for discharging contents. A porous plug prevents metal from flowing through each first opening and a stopper controls discharge of metal through the second opening. The inside bottom surface of the vessel is sloped downwardly toward the first opening or openings and the entrance to the second opening is at a level above all first openings when the vessel is upright. The porous plug or plugs may be recessed with respect to the inside bottom surface. Any material that settles from the molten metal will tend to collect directly above a porous plug and become entrained in the stirred metal upon the introduction of gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.