▎ 摘　　要

NOVELTY - Transferring and absorbing radioactive element in high-cold and high-altitude land area comprises (1) heating and drying tailings containing radioactive element thorium, after grinding, adding water to prepare tail ore slurry, (2) adding tail ore slurry into the hydrofluoric acid-sulfuric acid system, and leaching the tail ore radioactive element, (3) filtering the tailings, adding adsorption microsphere to the leaching liquid, and absorbing the emitting element, and (4) filtering the adsorption microsphere, finishing the transfer of the irradiation element, where the adsorption microsphere is nano ferric oxide/graphene oxide/chitosan composite microsphere. USE - The method is useful for transferring and absorbing radioactive element in high-cold and high-altitude land, which is useful for cleaning radioactive pollutant. ADVANTAGE - The method: can accelerate the radio element thorium leaching; adopts the nano ferric oxide/graphene oxide/chitosan microsphere adsorption material, which can greatly improve the adsorption rate of thorium in the leaching liquid; and realizes the efficient adsorption of the radioactive element thorium.