Process for the production of a tantalum and niobium bearing concentrate from a tantalum and niobium bearing ferro-alloy
US4211754A · kind A · utility
7Cited by
7References
9Claims
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Assignee
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Key dates
| Filing date | Oct 13, 1978 |
| Grant date | Jul 8, 1980 |
| Priority date | — |
| Expiry date | Oct 13, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B34/24
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A tantalum and niobium bearing concentrate is produced from a tantalum and niobium bearing ferro-alloy, containing tantalum and niobium as carbide, by treating the ferro-alloy in molten state with a controlled amount of an oxidizing agent such as oxygen in order to slag tantalum and niobium, and by separating the so obtained slag phase from the metal phase. The ferro-alloy contains enough iron to have at least most of the tantalum carbide dissolved in the molten ferro-alloy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.