Method of removing dissolved heavy metals from aqueous waste liquids
US4377483A · kind A · utility
40Cited by
9References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1980 |
| Grant date | Mar 22, 1983 |
| Priority date | — |
| Expiry date | Jul 15, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/914
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A powder of a slag formed at the time of manufacturing steel is used to remove heavy metals contained in waste water. After the use the slag may be heated to recover the heavy metals adsorbed thereby or the used slag may be formed into solid blocks, ballast or aggregate by admixing with Portland cement or alumina cement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.