METHOD FOR MANUFACTURING CEMENT SOLIDIFIED PRODUCT OF RADIOACTIVE WASTE INCINERATION ASH, AND THE SOLIDIFIED PRODUCT

摘要

PROBLEM TO BE SOLVED: To achieve a method for manufacturing a solidified product from which no cesium ion is detected even when a cement solidified product of incineration ash in which a radioactive cesium concentration of a recycled article is 100 Bq/kg and more or a cement solidified product obtained by solidifying incineration ash (fly ash, furnace bottom ash) in which a radioactive cesium concentration of a recycled article is 100 Bq/kg and less is broken, and to achieve the solidified product.;SOLUTION: In the method for manufacturing a cement solidified product of incineration ash of radioactive waste, a solid-liquid distribution coefficient of one or more adsorbents selected from zeolite, prussiate, manganese compound, and titanium silicate to cesium is measured, a minimum required amount of the adsorbent obtained by taking treated incineration ash and a water amount into consideration, the incineration ash and water are mixed and agitated, and then a part of cement to be used for solidification is agitated together with water, at least a part of amphoteric metal in the waste incineration ash is ionized or converted into amphoteric metal hydroxide, and residual cement is injected, kneaded, and solidified.;COPYRIGHT: (C)2014,JPO&INPIT