Hydrometallurgical process for copper recovery
US4634467A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1985 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | Jul 30, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved hydrometallurgical process for the recovery of metallic copper, elemental sulfur, compounds of molybdenum and other valuable materials from copper sulfide ore concentrates, such as chalcopyrite. The process, comprising a reduction stage, metallic copper recovery stage, and a combined regeneration-purge-oxidation stage, is improved by the addition of a second reduction stage following the first or primary reduction stage, and by the addition of a by-product recovery stage after the second or secondary reduction stage. The secondary reduction stage also enhances overall process performance by allowing more flexible operating practices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.