Foam injection leaching process for fragmented ore
US4080419A · kind A · utility
8Cited by
9References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 10, 1976 |
| Grant date | Mar 21, 1978 |
| Priority date | — |
| Expiry date | Dec 10, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention relates to a process for leaching broken or fragmented ore or metal-value containing bodies with a reagent-carrying foam. The foam is generated by adding a surfactant to a leaching solution and passing air or other gas through the solution to generate relatively stable foam bubbles which are propelled through the fragmented mass by gas pressure. The foam can be injected in cycles, allowing drain time, or can be injected continuously with the leachant drainage taking place at the periphery of the ore mass and removed continuously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.