Applications of mixed potential model in leaching of gold
来源期刊：中国有色金属学报(英文版)2000年第z1期
论文作者：姜涛 杨永斌 李光辉 黄柱成
文章页码：45 - 48
Key words：gold leaching； mixed potential； electrochemistry
Abstract: Mixed potential model is introduced to interpret gold leaching in solutions of complexing reagents. Methods of increasing the rate of gold leaching are illustrated in the view of mixed potential model. Solutions of cyanide and thiosulfate as gold leaching systems are under consideration. Enhancing either anodic or cathodic process may increase the current of gold dissolution and consequently the rate of gold leaching. High ligand concentration, additives such as Pb2+ , Hg2+ and ammonia enhance anodic processes, while pure oxygen and additive Cu(NH3)2+4 improve gold leaching by increasing cathodic polarization currents.
