Ore leach method with aqueous sulfuric acid containing ferric ions
US7799295B2 · kind B2 · utility
2Cited by
6References
22Claims
0Family size
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Key dates
| Filing date | Nov 3, 2004 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Oct 15, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
There is provided a method for leach extraction of copper/iron/sulphur ores and concentrates including leaching the mineral with an aqueous stream containing ferric ions and sulphuric acid in the presence of oxygen, the aqueous stream including a solution formed by reaction of basic ferric sulphate with excess suphuric acid. Integrated methods of forming and releaching basic ferric sulphate are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.