Method of making particles useful for removal of alkali and alkaline earth metals from light metal melts
US4152470A · kind A · utility
4Cited by
5References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1976 |
| Grant date | May 1, 1979 |
| Priority date | — |
| Expiry date | Jan 14, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B9/055
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Alkali and alkaline earth metals are removed from light metal melts by causing the melt to flow through a bed consisting of granules of a mechanically resistant and chemically inert carrier particles which have a coating of carbon. A suitable granule is prepared by mixing particles of inert carrier material with a cokable carbonaceous material and heating the mixture in a closed reaction vessel to the carbonaceous material and produce an adherent coating of carbon on the carrier particles of the granulate. The density of the coated granules is greater than 2.5 g/cm.sup.3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.