Recovery of Copper and Cyanide from Copper-cyanide Solution by Direct Electrolysis

Using direct electrolysis method, the recovery of copper and cyanide from high concentration solution was researched. The distribution species calculated by stability constants balance equation. results showed that cupric ion confirmed to generate at low potential (<0.4V) on titanium electrode coated with iridium tantalum oxides during process, which led oxidation precipitate obtained anode proved be hydroxide XRD potential. recovered electrowinning, increased increasing temperature, reached 80% 70°C; but loss serious, free significantly lower than original value.