Two stage leaching of limonitic ore and sea nodules
US4065542A · kind A · utility
10Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 1976 |
| Grant date | Dec 27, 1977 |
| Priority date | — |
| Expiry date | May 19, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B23/043
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process which enables cumulative recovery of nonferrous metal values from manganiferous sea nodules and a limonitic ore comprises treating the limonitic ore in an aqueous acidic medium under reducing conditions to extract nonferrous metals and iron from the ore and form a solution containing ferrous iron and then leaching the sea nodules with such solution to extract nonferrous metals from the sea nodules and precipitate a predominant amount of the iron as hydrated ferric oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.