Dead roast-oxide flash reduction process for copper concentrates
US4421552A · kind A · utility
3Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1982 |
| Grant date | Dec 20, 1983 |
| Priority date | — |
| Expiry date | Apr 16, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B15/0097
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention contemplates providing a finely divided copper calcine and thereafter subjecting the calcine to reduction flash smelting. Indeed, significant processing advantages are achieved by dead roasting a finely divided copper concentrate, especially in a fluid bed reduction zone, and thereafter subjecting the resulting calcine to reduction flash smelting. Gases from the dead roaster and the flash smelter are combined for SO.sub.2 recovery in an acid plant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.