Process for solidification of strongly acidic or akaline liquid wastes
US4547290A · kind A · utility
25Cited by
7References
11Claims
0Family size
Inventor
Key dates
| Filing date | May 2, 1984 |
| Grant date | Oct 15, 1985 |
| Priority date | — |
| Expiry date | May 2, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/919
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
According to the process, a clay material is first dispersed with stirring in the waste (or vice versa) between 0.degree. and 150.degree. C. then, in particular in the case of acidic wastes, it is neutralized to an approximately neutral pH by a product preferably with a lime base and, in a third phase, a hydraulic and/or calcium binder is added to the mixture. Application to petrification of all types of wastes of industrial, mining, urban and other origins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.