Electrolytic purification of metals
US4214956A · kind A · utility
10Cited by
2References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 2, 1979 |
| Grant date | Jul 29, 1980 |
| Priority date | — |
| Expiry date | Jan 2, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C3/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of electrolytically separating metal from impurities comprises providing the metal and impurities in a molten state in a container having a porous membrane therein, the membrane having a thickness in the range of about 0.01 to 0.1 inch, being capable of containing the molten metal in the container, and being permeable by a molten electrolyte. The metal is electrolytically transferred through the membrane to a cathode in the presence of the electrolyte for purposes of separating or removing impurities from the metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.