Method of restoring contaminated solids using ion exchange powder contact
US5242503A · kind A · utility
8Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1990 |
| Grant date | Sep 7, 1993 |
| Priority date | — |
| Expiry date | Dec 17, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2101/20
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A process for removing metal from a solid material includes the steps of admixing the metal containing solid (10) with an aqueous liquid (26) and particles of ion exchange material (28) having a strong affinity for metal in a mixer (24), to form a slurry, allowing the slurry materials to interact, and removing the ion exchange material loaded with metal (32) from the solid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.