Process for recovering tungsten carbide from cemented tungsten carbide scraps by selective electrolysis
US5384016A · kind A · utility
16Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1993 |
| Grant date | Jan 24, 1995 |
| Priority date | — |
| Expiry date | Nov 10, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B32/949
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process of recovering tungsten carbide from cemented tungsten carbide scraps by selective electrolysis is disclosed. A chelating agent is added to the electrolyte for complexing with tungsten ion to prevent passivation of tungsten carbide, and thus the dissolution rate of the cementing agent is increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.