Method for removing and recovering vanadium in molybdate by using copper salt

The invention discloses a method for removing and recovering vanadium in molybdate by using copper salt, which comprises the following steps: S1, dissolving molybdate to obtain a molybdate solution, and regulating the pH value of the molybdate solution to 6-10, S2, preparing a copper sulfate solution with the concentration of 10-150g/L, and adding ammonia water to obtain cuprammonia, and S3, adding the prepared cuprammonia into the molybdate solution, keeping the pH value at 6-10 and the residual ammonia concentration at 100-1000mg/L, filtering, taking the filtrate, and the like. According tothe method, vanadium in molybdate is removed and recycled through the copper salt, the characteristic that cuprammonia formed by copper salt and ammonia has selective adsorbability to vanadium and molybdenum is utilized, molybdenum and vanadium separation is thorough, the direct recovery rate of vanadium is larger than 99%, the molybdenum loss rate is smaller than 0.1%, the V/Mo ratio of slag is larger than 10 times, the