Recovery of silver, copper, zinc and lead from partially roasted pyrite concentrate by acid chloride leaching
US4168969A · kind A · utility
2Cited by
20References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1978 |
| Grant date | Sep 25, 1979 |
| Priority date | — |
| Expiry date | Apr 17, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for treating a pyrite concentrate containing silver, copper, lead and zinc to recover the metals contained therein is disclosed. The process includes the partial roasting of the concentrate to open the pyrite matrix to solution penetration followed by various hydrometallurgical steps, including oxidation and reduction leaching, solid-liquid separation and metal extraction steps, to recover the copper and silver together, and the lead and zinc separately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.