New vacuum distillation technology for separating and recovering valuable metals from a high value-added waste

Flotation tailings of copper-anode slime is a high value-added waste. A new, clean and highly efficient vacuum distillation process is presented for the separation of valuable metals that remain in the waste. In this work, the saturated vapor pressure of each metal element in the flotation tailings is theoretically analyzed, with vapor-liquid equilibria (VLE) diagrams used to quantitatively predict the composition of the products. The optimum...