System for curing slurry containing radioactive elements

A radioactive element-containing slurry curing system comprises: a reaction device, comprising: a first tank suitable for receiving radioactive slurry from the outside; the first heating assembly is suitable for heating the first tank body, so that the radioactive slurry is subjected to a hydrothermal synthesis reaction in a supercritical or subcritical state to generate a solidified body crystal nucleus, and the solidified body crystal nucleus is contained in the first tank body in the form of solidified body slurry; the transformation device comprises a second tank body suitable for receiving the solidified body slurry from the reaction device; the second heating assembly is used for carrying out two-stage heating on the second tank body to enable the solidified body slurry to form a solid solidified body blank, and the first-stage heating comprises the steps that the second tank body is heated to a first preset temperature, so that free water in the solidified body slurry is evaporated to form waste gas; t