Removal of substances from metal and semi-metal compounds
US6712952B1 · kind B1 · utility
18Cited by
15References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2001 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Jan 22, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25F1/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention pertains to a method for removing a substance (X) from a solid metal or semi-metal compound (M1X) by electrolysis in a melt of M2Y, which comprises conducting the electrolysis under conditions such that reaction of X rather than M2 deposition occurs at a electrode surface, and that X dissolves in the electrolyte M2Y. The substance X is either removed from the surface (i.e., M1X) or by means of diffusion extracted from the case material. The temperature of the fused salt is chosen below the melting temperature of the metal M1. The potential is chosen below the decomposition potential of the electrolyte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.