, Volume 57, Issue 2, pp 200–206 | Cite as

A polyphase geoceramic matrix for joint immobilization of the strontium-cesium and rare earth fractions of high-level waste

  • R. A. Kuznetsov
  • N. V. Platonova
  • R. V. Bogdanov


Polyphase geoceramic matrices of the (silico)phosphate type for joint immobilization of the strontium-cesium and rare earth fractions of high-level waste with residual actinide content were synthesized. The charge components were iron oxide, technical-grade phosphoric acid, and apatite ore dressing tails. The synthesis method involves fine dispersion of the starting materials and two-step ceramization at 920 and 910°C for 20 min. The total content of the radionuclides in the matrix is on the level of 15 wt %. The cesium leach rate under the conditions of kinetic control (at 90°C) is 5 × 10−7 g cm−2 day−1.


high-level waste (HLW) HLW immobilization geoceramic matrices ultradisperse synthesis leach rate water resistance of matrices 


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Copyright information

© Pleiades Publishing, Inc. 2015

Authors and Affiliations

  • R. A. Kuznetsov
    • 1
  • N. V. Platonova
    • 1
  • R. V. Bogdanov
    • 1
  1. 1.St. Petersburg State UniversitySt. PetersburgRussia

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