(581429) REDUCING FERRIC IONS IN ACIDIC ELECTROLYTES BY COPPER POWDER GENERATED DURING REACTIVE ELECTRO-DIALYSIS

摘要

Copper powder generated during the treatment of electro-metallurgical bleeds by reactive electro-dialysis (RED) had totally reduced the content of ferric ions in acidic synthetic electrolytes (Cu (II)- Fe (III) - H_2SO_4). In batch and columnar experiments 100% of the ferric ions were reduced to ferrous ions with an extremely high kinetics. A preliminary conceptual design for reducing ferric ions based on an integrate RED-Column for treatment of electro-winning bleed system is discussed. This system is able to recover simultaneously sulfuric acid and copper powder, which will reduce ferric ions.