Title:
放射性廃棄物の固化処理方法
Document Type and Number:
Japanese Patent JP6801938
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a solidification method of radioactive waste that prevents expansion due to a solid body formation reaction with radioactive waste containing sodium sulfate as a main component, reduces its volume, maintains strength over a long period, can create a stable solidified body, and performs quick processing with fewer steps.SOLUTION: A solidification method of radioactive waste heats sodium sulfate of 100 pts. wt. in dry state conversion, and radioactive waste with water content adjusted so that it contains 130-400 pts. wt. water to 32°C or more, and for the radioactive effluent, mixes together and solidifies 30-90 pts. wt. silica fume, 0.3-5.2 pts. wt. hexametaphosphate soda, and 170-230 pts. wt. cement.SELECTED DRAWING: Figure 1
Inventors:
Hideki Fujita
Shuichi Harasawa
Shuichi Harasawa
Application Number:
JP2016224272A
Publication Date:
December 16, 2020
Filing Date:
November 17, 2016
Export Citation:
Assignee:
Pacific Consultant Co., Ltd.
International Classes:
G21F9/16
Domestic Patent References:
| JP8285995A | ||||
| JP2009121940A | ||||
| JP2001099990A |
Other References:
山本 和夫、東 邦和、小西 正郎,「放射性廃棄物処分施設への分級フライアッシュコンクリートの適用性研究」,奥村組技術研究年報,日本,株式会社 奥村組 技術研究所,1992年11月10日,No.18,139-144ページ
Attorney, Agent or Firm:
Yasuo Mihara