Method of de-chroming and/or depleting the MgO content of steel slag
US6251160A · kind A · utility
3Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1999 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Apr 23, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S75/958
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In a process for dechroming, and/or depleting the MgO content of, steel slags, oxygen is introduced into the liquid steel slag to an extent sufficient for converting iron quantitatively to iron oxide and at least 5% by weight of the iron oxide contained in the slag to iron-III-oxide. The oxidized slag obtained solidifies and is disintegrated, whereupon the paramagnetic portions formed are magnetically isolated and separated from the dechromed slag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.