Method for recovering indium by electrowinning and apparatus therefor
US5543031A · kind A · utility
7Cited by
3References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 10, 1995 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Feb 10, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C1/22
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
In order to recover indium, while preventing generation of chlorine gas, by a direct electrowinning method from a hydrochloric acid solution from which impurities have been removed by various chemical purification methods, an electrolysis is carried out by using an indium-containing hydrochloric acid solution as an electrolyte for a cathode compartment equipped with a cathode comprising an indium starting sheet, by using a sulfuric acid solution in an anode compartment equipped with an insoluble anode and separating the cathode compartment and the anode compartment with a diaphragm of a cation exchange material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.