Process for the recovery of lead and silver chlorides
US4556422A · kind A · utility
14Cited by
7References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1981 |
| Grant date | Dec 3, 1985 |
| Priority date | — |
| Expiry date | Apr 20, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for selectively leaching lead and silver chlorides from a sulfide ore residue in a rapid time which comprises brine leaching the residue under pressure at a temperature above the normal boiling point of the solution, preferably above 100.degree. C. Modifications are leaching at the agglomeration temperature of sulfur when present in the residue to agglomerate the sulfur for ease of recovery, and flashing from leach temperature to ambient as a lead chloride crystallization recovery step to produce a large crop of lead chloride crystals per pass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.