Dimensionally stable drained aluminum electrowinning cathode method and apparatus
US4544457A · kind A · utility
11Cited by
10References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 17, 1983 |
| Grant date | Oct 1, 1985 |
| Priority date | — |
| Expiry date | Jun 17, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C3/08
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method and apparatus for making a drained aluminum electrowinning cathode dimensionally stable. A thin, 1/2 to 10 millimeter coating of substantially stagnant molten aluminum is maintained upon the cathode surface by an openly porous sheath or membrane closely conforming to contours of the electrowinning cathode. The sheath or membrane is made from a material substantially resistant to corrosives present in the aluminum electrowinning; it may be only slightly aluminum wettable, but should be relatively electrically nonconductive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.