超盐体系下铜铁氰络合物的去除及机理

为解决由于浸出液中铜氰络离子(CuCN2-3，CuCN3-4)和铁氰络离子(FeCN4-6)的存在造成金矿石氰化浸出过程中NaCN和活性炭的消耗量增加的问题，初步探讨了超盐体系下铜、铁氰络离子的存在形式，并对比分析了过氧化氢氧化法、氯氧化法和酸化法对上述络合离子的去除效果.结果表明，3种方法对铜氰络离子的去除率均在99%以上，而对铁氰络离子的去除率分别为73%，62%和55%；同时，对于超盐体系的氰化废水，质子化作用比氧化作用更有利于铜、铁氰络离子的分解和去除.

Elimination of Copper and Iron Cyanide Complexes and Mechanism in Hypersaline System

In order to solve the problem that the presence of copper cyanide complexes (CuCN2-3 and CuCN3-4)and iron cyanide complex (FeCN4-6) in lixivium increases the consumption of NaCN and activated carbon in the process of gold ore cyanide leaching， the forms of copper and iron cyanide complexes in hypersaline system were discussed preliminarily， and the elimination efficiencies of these complexes by three different methods， i. e. the hydrogen peroxide oxidation， the chlorine oxidation and the acidification， were comparatively analyzed. The results showed that the elimination efficiencies of the copper cyanide complexes are over 99% by the three methods， while that of iron cyanide complex are 73%， 62% and 55%， respectively. The protonation is more effective for the elimination and decomposition of copper cyanide complexes and iron cyanide complex than oxidation in hypersaline system.