Method of recovering precious metals
US5985221A · kind A · utility
15Cited by
13References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 15, 1996 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Oct 15, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/15
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a method of recovering precious metals from oxidic or refractory or semi-refractory ore material containing precious metal. This recovery of precious metal takes place with optimal comminution work and with more efficient and more reliable leaching also of non-oxidic ore material in such a way that the ore material is subjected to material bed comminution in the grinding gap between two rollers which are pressed against one another under high pressure and revolve in opposite directions and afterwards the comminuted ore material is preferably leached using a stirring movement in a container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.