RADIOACTIVE CESIUM SEPARATION CONCENTRATION METHOD, AND RADIOACTIVE CESIUM SEPARATION CONCENTRATION DEVICE

• Main Authors: KAMATA YOSUKE, KAMIBAYASHI SHIRO, NISHIMURA KAZUMOTO, SATO ATSUSHI, YOSHIOKA HIROHITO, ABE SEIICHI, HOSHO FUMIKI
• Format: Patent
• Language: English; Japanese
• Published: 16.11.2017
• Subjects: DECONTAMINATION ARRANGEMENTS THEREFOR; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; PHYSICS; PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL

PROBLEM TO BE SOLVED: To provide a radioactive cesium separation concentration method and device, which can greatly reduce the volume of radioactive cesium contained in a treatment object such as a soil or burned residue by efficiently separating and concentrating it.SOLUTION: A radioactive cesium separation concentration method of separating and concentrating the radioactive cesium contained in a treatment object, includes: a basicity conditioner adding process of adding a basicity conditioner so as to make the basicity (CaO/SiO) of the treatment object close to 1; a separating process of melting the treatment object to which the basicity conditioner has been added and vaporizing and separating the radioactive cesium from the molten slag; and a collecting process of collecting the radioactive cesium vaporized and separated in the separation process.SELECTED DRAWING: Figure 2 【課題】土壌や焼却残渣等の被処理物に含まれる放射性セシウムを効率的に分離濃縮して、大きく減容化することができる放射性セシウム分離濃縮方法及び装置を提供する。【解決手段】被処理物に含まれる放射性セシウムを分離濃縮する放射性セシウム分離濃縮方法であって、被処理物の塩基度（ＣａＯ／ＳｉＯ２）を１に近づけるように塩基度調整剤を添加する塩基度調整剤添加工程と、塩基度調整剤が添加された被処理物を溶融して溶融スラグから放射性セシウムを揮散分離する分離工程と、前記分離工程で揮散分離された放射性セシウムを捕集する捕集工程と、を含む。【選択図】図２