Ion exchange and regeneration process for separation and removal of iron (III) ions from aqueous sulfuric acid metal ion-containing solutions
US5582737A · kind A · utility
27Cited by
19References
20Claims
0Family size
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Key dates
| Filing date | Nov 7, 1995 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | Nov 7, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S204/13
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An ion exchange separation, recovery and regeneration process for the control of iron has been developed to replace the conventional bleed stream process used in copper electrowinning. The process minimizes the loss of cobalt from the electrowinning circuit and strips the iron into a sulfate-based solution suitable for leach solution makeup. In addition, this process can effect a lowering of the total iron concentration in the electrolyte circuit with an associated increase in current efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.