Composition and process for the encapsulation and stabilization of radioactive, hazardous and mixed wastes
US5926772A · kind A · utility
8Cited by
23References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1997 |
| Grant date | Jul 20, 1999 |
| Priority date | — |
| Expiry date | Oct 14, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21F9/36
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a composition and process for disposal of radioactive, hazardous and mixed wastes. The present invention preferably includes a process for multibarrier encapsulation of radioactive, hazardous and mixed wastes by combining substantially simultaneously dry waste powder, a non-biodegradable thermoplastic polymer and an anhydrous additive in an extruder to form a homogenous molten matrix. The molten matrix may be directed in a "clean" polyethylene liner, allowed to cool, thus forming a monolithic waste form which provides a multibarrier to the dispersion of wastes into the environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.