Galvanic coupling and its effect on origin potential flotation system of sulfide minerals①
来源期刊：中南大学学报(英文版)2004年第3期
论文作者：顾帼华 戴晶平 王晖 邱冠周
文章页码：275 - 279
Key words：galvanic coupling; origin potential flotation; sulfide mineral
Abstract: The galvanic coupling formed in origin potential flotation systems of sulfide minerals can be divided into three types: sulfide mineral-sulfide mineral-water system; sulfide mineral-steel ball-water system; and sulfide mineral-sulfide mineral-collector system. In this paper, taking lead, zinc, iron sulfide mineral systems for examples, several models of galvanic coupling were proposed and the effects of galvanic coupling on flotation were discussed. A galvanic contact be- tween galena (or sphalerite) and pyrite contributes to decreasing the content of zinc in lead concentrate, and enhances remarkably the absorption of collector on the galena surface. During grinding, due to galvanic interactions between minerals and steel medium, Fe(OH)3 formed covers on the cathodic mineral surface, affecting its floatability.
