Hydrometallurgical treatment of copper-bearing hematite residue
US4338168A · kind A · utility
42Cited by
6References
4Claims
0Family size
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Key dates
| Filing date | Feb 11, 1981 |
| Grant date | Jul 6, 1982 |
| Priority date | — |
| Expiry date | Feb 11, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method is provided for recovering copper values from a copper-bearing hematite residue in a single stage. It comprises leaching the residue in an aqueous sulphuric acid solution in the presence of ammonium, sodium or potassium ions, at a temperature between about 80.degree. C. and the boiling point of the solution so that copper values are dissolved while iron is precipitated as jarosite. The method is particularly suitable for the treatment of residues resulting from an oxidizing pressure leach of copper concentrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.