Process for removing manganese from organic solutions of oximes and nickel ore treatment process
US6156280A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1999 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Feb 24, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Process for removing manganese values from a solution of a water-immiscible hydrocarbon containing manganese values and a water-insoluble oxime extractant capable of extracting nickel values from aqueous ammoniacal solutions comprising the steps of PA1 I) contacting the water-immiscible hydrocarbon solution with a finely divided active metal and an aqueous solution of a strong acid to decrease or complete remove the manganese values from said water-immiscible hydrocarbon solution; and PA1 II) separating the stripped hydrocarbon solution from the aqueous solution. PA1 The invention also relates to a method for the extraction of nickel from nickel-containing ores in which a content of manganese values is present in which the above process is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.