Uranium is an important nuclear fuel, and the development of uranium mining and metallurgy, especially low grade uranium resources, is the foundation of nuclear power development. The multi-function supercritical CO 2 extraction device developed by the laboratory was used to leach uranium ore. By orthogonal design, study pressure, oxidant, reaction time and temperature on the effect of uranium leaching rate, the supercritical CO 2 fluid extraction from the optimum process parameters of uranium ore. The results show that the leaching effect is t...