Korea Atomic Energy Research Institute

Korea Hydro Nuclear Power Co., Ltd.

Hee Chul Eun

Sang Yoon Park

Bum Kyoung Seo

Man Soo Choi

Hwan Seo Park

Jei Kwon Moon

Geun Il Park

Hui Jun Won

In Tae Kim

Byung Seon Choi

Wang Kyu Choi

Na On Chang

Chong Hun Jung

Seon Byeong Kim

Sang Hun Lee

Yung Zun Cho

Song Bok Lee

Tae Kyo Lee

The present disclosure provides a solidifying method of a radionuclide. The solidifying method of the radionuclide includes operations of: providing a low melting point glass including BiO, BO, ZnO and SiO; providing a glass mixture mixing a mixture to be treated containing a hydroxide of radionuclide and BaSOand the low melting point glass; and heating the glass mixture.

Solidifying method of hydroxides of radionuclides

Disclosed herein is a method of separating group II nuclides from a radioactive waste lithium chloride salt and recovering renewable lithium chloride, comprising the steps of: injecting lithium oxide into a lithium chloride salt containing group II nuclides to convert the group II nuclides into thermally-stable oxide or oxychloride; and vaporizing and condensing the lithium chloride salt under a reduced pressure condition to separate the group II nuclides and recover recyclable lithium chloride. The method is advantageous in that group II nuclides existing in the form of chloride, which is not highly thermally-stable in a lithium chloride (LiCl) to salt and is not easily solidified, can be converted into oxides or oxychlorides, which is highly thermally-stable in the lithium chloride (LiCl) salt and is easily solidified, without producing impurities.

Method of separating group II nuclides from radioactive waste lithium chloride salt and recovering pure lithium chloride using lithium oxide

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Daejeon, South Korea

Hee Chul Eun