The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 2023
Filed:
Mar. 12, 2021
Kwang-young Lim, Seoul, KR;
Tae-sik Jung, Sejong, KR;
Yeon-su NA, Daejeon, KR;
Min-jae Joo, Sejong, KR;
Seung-jae Lee, Daejeon, KR;
Yoon-ho Kim, Daejeon, KR;
Kwang-young Lim, Seoul, KR;
Tae-sik Jung, Sejong, KR;
Yeon-su Na, Daejeon, KR;
Min-jae Joo, Sejong, KR;
Seung-jae Lee, Daejeon, KR;
Yoon-ho Kim, Daejeon, KR;
KEPCO NUCLEAR FUEL CO., LTD., Daejeon, KR;
Abstract
The present disclosure relates to a pellet containing an oxide additive to improve a nuclear-fission-gas-adsorption ability of a uranium-dioxide pellet used as nuclear fuel and increase the grain size thereof, and to a method of manufacturing the same. A LaO—AlO—SiOsintering additive is added to uranium dioxide so that mass movement is accelerated due to the liquid phase generated during sintering of the uranium-dioxide pellet, which promotes the growth of grains thereof. Further, since less volatilization occurs during sintering due to the low vapor pressure of the liquid phase, efficient additive performance is exhibited, so the liquid phase surrounding the grain boundary effectively adsorbs cesium, which is a nuclear fission gas.