Cement solidification treatment of spent ion exchange resins
US4904416A · kind A · utility
7Cited by
7References
6Claims
0Family size
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Key dates
| Filing date | Jul 26, 1988 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Jul 26, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed is an improved process for cement solidification treatment for disposition of spent ion exchange resins exhausted from nuclear power plants. The wet resin particles are centrifuged to remove free water therefrom and subjected to the pre-treatment of coating with a small amount of cement powder, and then, cement powder and water is added to the resin particles and the mixture is kneaded to form cement paste, which is cast in to a vessel for solidification. The cast product contains much more resin particles and has improved water-resistability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.