Nippon Kayaku Kabushiki Kaisha

Jgc Corporation

Shigeru Mihara

Kazunori Suzuki

Yoshimitsu Karasawa

Yasuo Kuroda

Masayuki Kiyomoto

Takuro Yagi

Koichi Ikeda

Tadashi Sasaki

Disclosed is a method of disposal of metallic aluminum-containing solid waste comprising the steps of reacting radioactive solid waste containing metallic aluminum with an alkali solution to generate a hydrogen gas and then mixing the resulting reaction liquid with a solidifying material containing a latent hydraulic material as a main component to solidify the liquid. According to the method of the invention, solidification of aluminum-containing radioactive solid waste in a highly filled state (high concentration) is feasible and a solid having excellent mechanical strength and properties of preventing oozing of radioactive nuclide can be obtained.

Method of disposal of metallic aluminum-containing radioactive solid

There are provided a solidifying material used for radioactive waste which comprises a latent hydraulic material, an ultra-fine powder substance and a dispersing agent, and a process for the solidification of radioactive wastes which comprises kneading the above solidifying material with a cure stimulating agent, radioactive waste and, as occasion demands, water, and then curing the mixture by aging. Since the solidifying material of the present invention has excellent properties such as large treating capacity, excellent water resistance and large compressive strength, not only temporary storage but also permanent storage of radioactive wastes can be made.

Solidifying material for radioactive wastes, process for solidifying

Growing community of inventors

Oarai, Japan

Shigeru Mihara