铁离子催化辉铜矿氧压酸浸过程的研究  

KINETIC STUDIES ON IRON CATALYSED ACID PRESSURE LEACHING OF CHALCOCITE

作　　者：张振健[1] 毛铭华[2] 

机构地区：[1]北京矿冶研究总院 [2]中国科学院化工冶金研究所

出　　处：《有色金属》1990年第3期64-68,共5页Nonferrous Metals

摘　　要：本文研究了在少量铁离子存在下辉铜矿氧压酸浸过程的动力学规律,铁离子对辉铜矿的浸出过程具有明显的催化作用。其催化机理可用氧载体加速反应得到解释。铁离子的存在大大提高了元素硫的产率。CuS浸取反应动力学符合生成固体产物层的收缩核模型。少量铁离子对强化辉铜矿氧压酸浸过程和合理利用元素硫具有重要意义。The kinetics of acid pressure leaching of chalcocite in the presence of iron in solution was investigated. The presence of a small amount of iron in solution accelerates the rate of leaching significantly. The catalytic effect of iron is considered to act as "oxygen carrier". The yield of elemental sulphur was increased with the increase of concentration of iron in solution. The kinetics of second stage leaching of CuS could be expressed by a shrinking core model with a solid product layer.

关 键 词：铁离子浓度 元素硫 产率 动力学 硫肥 浸取过程 硫化矿物 辉铜矿 氧压酸浸 

分 类 号：TD862[矿业工程—金属矿开采] TF80[矿业工程—矿山开采]