Disposal of heavy metal containing sludge wastes
US4113504A · kind A · utility
41Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1977 |
| Grant date | Sep 12, 1978 |
| Priority date | — |
| Expiry date | Oct 3, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/914
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The heavy metal content of sludge waste is fixed in a cementitious solid product by mixing the waste sludge with fixing ingredients comprising vermiculite and cement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.