Method for recovering gold from activated carbon
US10392679B2 · kind B2 · utility
1Cited by
4References
15Claims
0Family size
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Key dates
| Filing date | Dec 4, 2015 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Feb 27, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention is intended for effectively removing copper, iron, sulfur, which are impurities, from activated carbon on which gold is adsorbed before gold eluting in the point of view of gold recovery, and is related to a method for eluting gold from an activated carbon on which at least sulfur (S) and gold (Au) are adsorbed, whereas the activated carbon is washed with an alkali solution before eluting the gold, and then the gold is eluted from the activated carbon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.