Abstract:Address to the characteristics of high composition and complex metal occurrence in rhenium-rich slag, a controlled potential oxidation leaching method was used to conduct leaching experiments on rhenium in rhenium-rich slag. Through single factor experiments, the optimal experimental conditions are determined as follow: oxidation leaching potential of 700—750 mV, mass concentration of sulfuric acid of 15%, leaching temperature of 70 ℃, and leaching time of 60 minutes. Under these conditions, the leaching rate of rhenium is 98.612%, and the leaching rate of other components is 90% above.