Process for recovering ruthenium
US4002470A · kind A · utility
8Cited by
2References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1975 |
| Grant date | Jan 11, 1977 |
| Priority date | — |
| Expiry date | Nov 18, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
From a ruthenium-containing substance, sparingly soluble in any of water, acid solutions and basic solutions, flaked off used metal electrodes comprising a substrate of a corrosion-resistant metal coated with ruthenium metal or a compound thereof, ruthenium is recovered in the form of metal or a compound thereof, soluble in such media as described hereabove, easily and with a high percent recovery by means of a combination of simple chemical procedures and also inexpensive chemicals and in a short period of time. The recovered ruthenium metal or compound thereof can be reused for recoating used metal electrodes and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.