Gaseous based desulfurization of alloys
US9481917B2 · kind B2 · utility
5Cited by
14References
22Claims
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Key dates
| Filing date | Dec 20, 2012 |
| Grant date | Nov 1, 2016 |
| Priority date | — |
| Expiry date | Dec 31, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D1/002
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for desulfurizing a metal alloy comprises heating the metal alloy to a molten state. A gaseous desulfurizing compound is bubbled through the molten alloy to form a solid sulfur-containing waste phase and a molten reduced-sulfur alloy phase. The solid waste phase and the molten reduced-sulfur alloy phase are separated. The gaseous desulfurizing compound includes a constituent element selected from the group: alkali metals, alkaline earth metals, and rare earth metals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.