Ngk Insulators, Inc.

Kobe Steel, Ltd.

Masaru Hayashi

Fumiaki Komatsu

Yoshihisa Sawada

Yorihisa Sakaki

Atsushi Tagusagawa

Tomoyuki Okumura

A radioactive waste is solidified by adding a nonionic high molecular flocculant to a slurry containing radioactivated crud to precipitate the crud, concentrate the thus treated slurry and then separating the crud from the slurry, drying said crud, mixing the dried crud with a frit of a low melting point and filling a steel can with the resulting mixture, heating the steel can to sinter and solidify the above described mixture, and sealing a surface of the solidified body in the steel can with a sealing material.

Heating process for solidifying a crud

A system for treating radioactive waste employing a rotary mechanism which contains in its rotational path of travel a number of stages for the treatment, i.e., a stage of condensing a slurry of radioactive waste, a stage for drying the condensed waste and a stage for storing dried waste temporarily for feeding to a melting furnace. The rotary mechanism employs a number of containers for transferring the radioactive waste to and from the respective stages along the rotational path of travel.

System for treating radioactive waste

Growing community of inventors

Tokyo, Japan

Masaru Hayashi