Method for controlling foam production in reduced pressure fining
US7134300B2 · kind B2 · utility
68Cited by
22References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2005 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Jan 4, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B5/2252
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for controlling the foam produced when a molten material encounters reduced pressure in a vacuum chamber includes passing the molten material through an aging zone in the vacuum chamber in which the molten material is allowed to drain from between the bubbles of the foam and then collapsing the bubbles of the drained foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.