Treatment of zinc plant leach residues for recovery of the contained metal values
US4225342A · kind A · utility
2Cited by
14References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1979 |
| Grant date | Sep 30, 1980 |
| Priority date | — |
| Expiry date | Sep 21, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for treating zinc plant leach residues for the recovery of the lead, silver, and tin values contained therein is disclosed. The process includes the treatment of the zinc plant residue with concentrated sulphuric acid followed by water leaching and other hydrometallurgical steps to separately recover the lead, silver and tin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.