Calcined resin microsphere pelletization (CRMP): A novel process for sintered metallic oxide pellets

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• 作者：E. Remy^a ; ^{elodie.remy@cea.fr} ; S. Picart^a ; S. Grandjean^a ; T. Delahaye^b ; N. Herlet^b ; P. Allegri^c ; O. Dugne^c ; R. Podor^d ; N. Clavier^d ; P. Blanchart^e ; A. Ayral^f
• 关键词：MA ; minor actinides ; MABB ; minor actinide bearing blanket ; SGMP ; sol&ndash ; gel microsphere pelletization ; CRMP ; calcined resin microsphere pelletization ; FT ; final temperature ; HR ; heating rate ; TD ; theoretical density ; PHWR ; pressurized heavy water react
• 刊名：Journal of the European Ceramic Society
• 出版年：2012
• 出版时间：September, 2012
• 年：2012
• 卷：32
• 期：12
• 页码：3199-3209
• 全文大小：2234 K

文摘

This study deals with the preliminary development of a powder-free process called calcined resin microsphere pelletization (CRMP) used for the fabrication of metallic oxide pellets. This dustless process could be used for the fabrication of mixed U_1?em>yAm_yO_2¡Àx pellets dedicated to the transmutation of Am in fast neutron reactors. In this study, porous CeO₂ microspheres, used as a surrogate of AmO₂, were obtained after mineralization of cerium loaded ion exchange resin beads. These millimetric oxide microspheres were die-pressed into pellets which were then sintered under air to form ceramic pellets. Their densities approached 95 % of theoretical density of CeO₂ and a homogeneous microstructure was obtained by using optimized microspheres. The influence of calcination parameters on the characteristics of microspheres and on the properties of sintered pellets is discussed.