Process to remove rare earths from spent nuclear fuel

The present invention refers to nuclear reactor fuel consumption rare earth element from concerns method for removing (RE). An exhausted the heater encloses 200 to 800 °C, a at a temperature of 1000 to 1600 °C undergoes a heating step. An exhausted the process poor rare earth phase decarbonizing rich rare earth fuel U 3 O 8. and allowed to separate into an. Decarbonizing rich RE filter while phase, air classification, precipitation of the existing method such as poor RE by isolation technique U 3 O 8 from separated from one another.