硫酸铁电化浸出黄铜矿精矿工艺研究  

Study on ferric sulfate electrochemical process for leaching chalcopyrite concentrate

作　　者：石初华[1] 许民[1] 章金兵[1] 

机构地区：[1]南昌大学化学系,江西南昌330031

出　　处：《无机盐工业》2007年第4期35-37,共3页Inorganic Chemicals Industry

摘　　要：研究了在Fe2(SO4)3-H2SO4-NaCl体系中直接电解浸出黄铜矿精矿工艺条件及机理。实验表明,在阳极初始溶液含Fe3+1 mol/L,H2SO44 mol/L,NaCl 1.5 mol/L,阴阳极电流密度分别为350和650 A/m2,温度368 K的条件下浸出6 h,可以获得铜浸出率为95%,精矿中的硫90%以上以单质硫回收。温度是影响铜浸出率最显著的因素,阳极上发生的主要反应是Fe3+氧化;硫酸铁直接氧化黄铜矿得到单质硫;酸分解黄铜矿产生H2S,H2S溶解后再被Fe3+氧化为硫。The process conditions and principle to electrolyze and leach chalcopyrite concentrate directly in Fe2 （ SO4 ） 3 -H2SO4 -NaCl system have been studied. The experiments showed that the copper＇s leaching rate can reach 95% and more than 90% of sulfur in the chalcopyrite concentrate can be recovered as simple sulfur if the anodic initial solution contains Fe^3 ＋ 1 mol/L, H2 SO4 4 mol/L and NaCl 1.5 mol/L,the current density of cathode and anode were 350 and 650 A/m^2 respectively and leaching for 6 h under 368 K. The effect of temperature was evident on the copper leaching rate and the main reaction happened on the anode was the oxidation of Fe^3 ＋. The chalcopyrite can be oxidized by ferric sulfate directly to produce elementary sulfur. Acid decomposed the chalcopyrite to generate H2S and H2 S was oxidized by Fe^3 ＋ after it was dissolved.

关 键 词：黄铜矿精矿 电化法 硫酸铁 浸出 

分 类 号：TF811[冶金工程—有色金属冶金]