Abstract:A new ion exchange method based on the complexation of uranyl ions with Cl- was proposed to separate and extract uranium from the chloride containing leaching solution of high concentration rare earth and low concentration uranium, while leaving most of the rare earth elements and thorium in the leaching solution. The effects of pH value and chloride ion concentration on the adsorption were studied. The results show that under the optimal conditions of pH=0—1 and Cl- concentration of 7 mol/L, the adsorption capacity of uranium by saturated resin can reach 43.34 mg/g. Subsequently, 7 mol/L HCl solution was used for acid washing, followed by elution with deionized water to recover thorium and rare earths while achieving uranium separation and extraction. This technology does not change the traditional rare earth extraction process, but only adds the technical unit of uranium extraction process, which can realize the separation and enrichment of uranium, and has the characteristics of short process, no impact on original rare earth extraction process, and maximize the utilization of minerals.