Method for treating tailing slurries with Caro's acid
US6090297A · kind A · utility
2Cited by
14References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1997 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Jul 30, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/904
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for treating precious metal tailing slurries with Caro's acid, in which the Caro's acid is accompanied by reduced amounts of Caro's acid mist, is disclosed. The hot Caro's acid-containing mixture, formed by reaction of concentrated sulfuric acid and hydrogen peroxide, is quenched with water to reduce or eliminate the Caro's acid mist. The resulting cooled and diluted mixture is introduced into a precious metal tailings slurry to reduce the amount of cyanide values in the slurry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.