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Report No.

Characterization of microwave heating using CNT-containing alumina heating media

Tamaru, Ayaka*; Segawa, Tomoomi ; Yamada, Masaaki*; Fukasawa, Tomonori*; Ishigami, Toru*; Fukui, Kunihiro*

The microwave heating method is used in the reprocessing process of spent fuels. It is possible to improve powder quality by microwave and external heating together. However, the use of external heating in a microwave irradiation field causes a problem of deterioration of equipment. Hybrid heating using CNT-containing alumina with a large relative permittivity as an external heating source has been studied. The characteristics of the hybrid heating in a cavity-type reactor and the relationship between the relative dielectric losses of the materials were evaluated. The relative dielectric losses of the CNT-containing alumina and sample powders were measured by the cavity resonator method and the MW-TG method, respectively. The relative dielectric loss measured by the MW-TG was consistent with the selectivity of heating and was confirmed to be an appropriate index for evaluating the microwave heating characteristics.



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