METHOD FOR PRODUCING SOLIDIFIED AGGREGATE OF WASTE ION EXCHANGE RESIN

PROBLEM TO BE SOLVED: To provide a method for producing solidified aggregates of waste ion exchange resin that can be incinerated efficiently and steadily at a low cost, particularly a method for producing the same continuously, a device for producing the same, and the same.SOLUTION: The method comprises: a water absorption step of mixing roughly drained waste ion exchange resin and a water-absorbing material and absorbing residual water from the waste ion exchange resin into the water-absorbing material; a flammable binding material addition step of adding a flammable binding material to the mixture of the desiccated waste ion exchange resin and the water-absorbing material and mixing the mixture; a calcium salt addition step of adding an inorganic compound including calcium to the mixture of the desiccated waste ion exchange resin, the water-absorbing material and the flammable binding material; a kneading and extrusion step of feeding the mixture of the desiccated waste ion exchange resin, the water-absorbing material, the flammable binding material and the calcium salt to a kneading extruder, kneading the mixture, and extruding the kneaded mixture into extruded bodies in a desired shape; and a cooling and solidification step of cooling and solidifying the extruded bodies. The water absorption step, the flammable binding material addition step, the calcium salt addition step and the kneading and extrusion step are performed in an inert gas atmosphere free from carbon dioxide.