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Solidification of HLLW into Sintered Ceramics

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増田 純男; 角田 直己; 荻野 直彦*

not registered; Tsunoda, Naomi; Ogino, Naohiko*

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Simulated HLLW from reprocessing plant of PNC at Tokai was solidified into sintered ceramics by normal-sintering or hot-pressing with addition of some oxides. Among various ceramic products obtained so far, the most preferable one was Nepheline types intered solids formed with addition of SiO/SUB2 and A1/SUB2/O/SUB3 to the Simulated waste calcine. The solid shows advantageous properties in leach-rate and mechanical strength, which possively comprise the ceramic product be a promising solid waste form. Other type of ceramic solids were prepared with addition of ZrO/SUB2 or MnO/SUB2, and some of them showed preferable characters.

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