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PARTITION Status and Planning for the Cluster evaluation by Charles MADIC

PARTITION Status and Planning for the Cluster evaluation by Charles MADIC Presented by Michaël Lecomte CEA/ Direction de l’énergie nucléaire. OUT-LINE Introduction Possible work packages A/ Hydrometallurgy B/ Pyrometallurgy Conclusions. Introduction Continuity

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PARTITION Status and Planning for the Cluster evaluation by Charles MADIC

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  1. PARTITION • Status and Planning for the Cluster evaluation • by • Charles MADIC • Presented by Michaël Lecomte • CEA/ Direction de l’énergie nucléaire

  2. OUT-LINE • Introduction • Possible work packages • A/ Hydrometallurgy • B/ Pyrometallurgy • Conclusions

  3. Introduction • Continuity • The research in PARTITIONING to be carried out within the European 6th FP will be in continuity with that done during the 5th FP: • the main target elements for partition will be the Actinides (An), • both hydro and pyrometallurgical processes will be developed, • the research teams to be involved will be mainly those of the PARTNEW, CALIXPART and PYROREP collaborations. • Novelty: Main axes for the research (for both hydro andpyro) • Partitioning of Minor Actinides (MAs = Am-Cf) and some LLFP(s) from high burn-up UOX and multi-recycled MOx fuels, advanced fuels • Partitioning (recycling all Actinides together/non Proliferation) of An for future fuel cycles (GCRs, MSRs and ADSs).

  4. Possible Work Packages (WPs) • A/ Hydrometallurgy • General comments • For each of the following WPs, the research will be quite broad, including : • (i) the molecular modelling of the ligands, • (ii) their synthesis and characterization, • (iii) the study of their extracting properties (thermodynamics, kinetics, structures at molecular and supramolecular scales), • (iv) the study of the stability of the ligands vs radiolysis and hydrolysis, • (v) the scaling-up of the synthesis for the ligand selected for process development, • (vi) the design of process flowsheet, • (vii) cold test(s) of the processes, • (viii) hot tests of the processes. Industrial property Classification/Proliferation

  5. Possible Work Packages (WPs) • A/ Hydrometallurgy • WP1 • Partitioning of An = Am-Cf from HARs and HACs issued from the reprocessing of UOx (high burn-up) and MOX (multi-recycled) fuels, • The processes to be developed will be in the continuity of those studied within the PARTNEW program (DIAMEX, SANEX with N and/or S-bearing ligands). Moreover, Am/Cm/Bk/Cf separations will be studied. • WP2 • Partitioning of An(III) (An = Am-Cf) from HARs and HACs issued from the reprocessing of UOx (high burn-up), MOX (multi-recycled) fuels and advanced fuels. • The extractant to be selected will belong to the functionalized calix-arene family. The process will permit the selective extraction of An(III) and, possibly, their mutual separation. • The work will be done by the ex-CALIXPART teams.

  6. Possible Work Packages (WPs) • A/ Hydrometallurgy • WP3 • Co-partitioning of An(III) (An = Am-Cf) and Cs(I) from HARs and HACs issued from the reprocessing of UOx (high burn-up) and MOX (multi-recycled) fuels, • The solvent will contain a mixture of diamide (An(III) extraction) and calixarene (Cs extraction) : Cs = LLFP (Cs 135) and heater FP (Cs 137), (Sr extraction) ? • This process will be developed by joint teams from ex-PARTNEW and ex-CALIXPART collaborations.

  7. Possible Work Packages (WPs) • A/ Hydrometallurgy • WP4 • Partitioning of An for future fuel cycles (GCRs, MSRs, ASDs) • The co-extraction of An(VI) (An = U, Np, Pu), An(IV) (An = Np, Pu), and An(III) (An = Am-Cf) will be studied. Several process concepts will be tested: (i) mixture of extractants (diamide + acidic extractant), (ii) definition of bi-topic extractants (totally new concept), (iii) chromatography techniques • The research will be done in the continuity of PARTNEW. • WP5 • The nature of the study will be similar to that of the WP4, but calixarene type of ligands will be studied, • Consequently, ex-CALIXPART teams will be in charge of the study. • WP6 • Methods for the co-conversion of Ans for fuel preparation (oxide, nitride or carbide) : crystallization, precipitation, solgel process ...

  8. Possible Work Packages (WPs) • A/ Pyrometallurgy • WP7 • Partitioning of An from current HLWs issued from UOx and/or MOx fuel reprocessing by the PUREX process, • Molten salt (MS) media to be studied will be: (i) chlorides, (ii) fluorides, • Completion of basic property determination of An in MSs, • demonstration of the feasibility of high An recovery yields (99.9%) with sufficient DFs vs FPs • WP8 • Processing of spent fuels for future fuel cycles, • Molten salt (MS) media to be studied will be: (i) chlorides, (ii) fluorides, • recycling all An together, • high burn-up fuels and short cooling times.

  9. Possible Work Packages (WPs) • A/ Pyrometallurgy • WP9 • Chemistry of the trans-curium elements in MSs (Cl and F). • WP10 • Study of the conditioning of the wastes genetated by process implementation (mainly the spent salts). • WP11 • Systems studies.

  10. Conclusions • The work to be done within the 6th FP in the field of partitioning will be in the continuity with the research carried out during the 5th FP: this will allow the strengthening of the previously obtained results, • New routes will be followed, mainly in relation with possible new fuel cycles; this will imply important creativity in the research, • The working force to be involved, for very fundamental work to very applied ones, seems to be very optimistic and one can thus expect great success for the research.

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