copper electrorecovering method, copper electrorecovering process of a copper and ferrous iron containing electrolyte stream, and copper electrorecovering system of a copper containing electrolyte

摘要

"METHOD FOR COPPER ELECTRO-RECOVERY, PROCESS FOR COPPER ELECTRO-RECOVERY OF AN ELECTROLYTE CURRENT CONTAINING COPPER AND IRON IRON, AND SYSTEM FOR COPPER ELECTRO-RECOVERY OF A COPPER ELECTROLYTE". The present invention relates generally to a method and apparatus for electrorecovering metals, and more particularly to a method and apparatus for copper electrorecovering using the ferrous / ferric anodic reaction. In general, the use of through-flow anode coupled with an effective electrolyte circulation system enables efficient and cost-effective operation of a copper electrorecovery system employing ferrous / ferric anode reaction at a total voltage of less than about 1.5 V and at current densities greater than about 26 Amps per square foot (about 280 A / m¬ 2¬) and reduces acid mist generation. In addition, the use of such a system allows the use of low ferrous iron concentrations and optimized electrolyte flow rates compared to prior art systems while producing high quality and commercially sellable product (ie, LME Grade A copper cathode or equivalent), which is advantageous.