Method of treating silicate ore containing gold and silver
US4695317A · kind A · utility
2Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1986 |
| Grant date | Sep 22, 1987 |
| Priority date | — |
| Expiry date | Jan 29, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B15/0054
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A silicate ore containing gold and silver is melted with the slag from a copper converter and a reducing agent. A source of CaO may also be added to the slag so that the treated slag may contain at least 3.0% by weight of CaO. Copper is recovered from the slag and absorbs gold and silver from the ore. This method drastically improves the capacity for the treatment of a silicate ore containing gold and silver during the smelting of copper. It enables the complete melting of the ore without leaving any ore undissolved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.