超盐体系下铜铁氰络合物的去除及机理  

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

作　　者：李明阳[1] 魏德洲[1] 刘文刚[1] 沈岩柏[1] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2013年第10期1473-1476,共4页Journal of Northeastern University(Natural Science)

基　　金：国家科技支撑计划项目(2012BAB01B03);中央高校基本科研业务费专项资金资助项目(N120501002)

摘　　要：为解决由于浸出液中铜氰络离子(CuCN_3^(2-),CuCN_4^(3-))和铁氰络离子(FeCN_6^(4-))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.In order to solve the problem that the presence of copper cyanide complexes （ CuCN23- and CuCN43- ） and iron cyanide complex （FeCN4- ） 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.

关 键 词：氰化物 络合物 水处理 超盐体系 质子化作用 

分 类 号：X703.1[环境科学与工程—环境工程]