Anodic Dissolution of Non-Ferrous Metals in a Glycerate-Alkali Electrolyte

Abstract

Studies have been conducted to assess the possibility of refining a lead collector containing precious metals, with the aim of obtaining lead using an economically viable and environmentally safe technology. A method of electrochemical selection in an alkaline glycerate electrolyte is proposed. The behavior of lead, silver and "silver crust"during anodic polarization in glycerate electrolyte was studied using the potentiodynamic method. "Silver crust"- type alloy of the following composition were used in this study, (wt.) %: 77.9 Pb, 12.76 Zn, 3.53 Ag, 0.50 Cu, Sb 0.90. The studies were carried out using the method of a rotating disk. Studied the patterns of anodic oxidation of lead and impurities in alkaline-water-glycerate electrolytes, depending on the concentration of sodium hydroxide and glycerol in the electrolyte, the potential sweep rate. © Published under licence by IOP Publishing Ltd.