DEVELOPMENT OF A SYSTEM FOR THE IMBEDDING OF ALPHA BEARING WASTE IN A CERAMIC MATRIX
The report covers the research work carried out from 1981 - 1983. The investigations were performed with emphasis put on the immobilization of original alpha waste in ceramic matrices, and the characterization of the resulting ceramic pellets. The following results have been achieved: - The quality of the leachability of the ceramic matrix can be controlled by the Al-2O-3/Al-2O-3 + SiO-2 ratio of the matrix: The Pu leach rate decreases by increasing the Al-2O-3/Al-2O-3 + SiO-2 ratio. - the feasibility of producing monolithic blocks consisting of ceramic pellets, an inactive glass filler and a container has been demonstrated. - original dissolver residues from reprocessing have been incorporated within a low and high alumina ceramic matrix and the product properties determined. - The volatility of ruthenium and molybdenum have been determined in function of: sinter atmosphere, and additives to the matrix raw material. - the solidification of plutonium ash from the dry incineration within high alumina matrices by different processing has been performed, and the products characterized. The elevation of a technical process producing alpha bearing waste pellets has been continued by experiments concerning: - Homogenization of ceramic raw materials by using a conventional mixer - extruder technique; - hauling and handling of simulated waste suspensions, and by: - investigations concerning the development of a flow sheet diagram, and necessary hardware selection.
Bibliographic Reference: EUR 9452 DE (1985) FS, 103 P., BFR 350, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989124008800 / Last updated on: 1987-01-01
Available languages: de