Method for controlling foam production in reduced pressure fining
US6854290B2 · kind B2 · utility
73Cited by
21References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2001 |
| Grant date | Feb 15, 2005 |
| Priority date | — |
| Expiry date | Feb 11, 2022 |
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.