镍黄铁矿无捕收剂浮选行为及表面氧化电化学  

Collectorless Flotation Behavior and Surface Oxidation Electrochemistry of Pentlandite

作　　者：罗仙平[1] 韩统坤 马鹏飞[1] 程琍琍[1] 

机构地区：[1]江西理工大学,江西赣州341000

出　　处：《有色金属工程》2015年第6期51-54,共4页Nonferrous Metals Engineering

基　　金：国家自然科学基金资助项目(51374116)

摘　　要：运用单矿物浮选和循环伏安曲线研究镍黄铁矿在无捕收剂条件下浮选行为及表面氧化电化学过程。The collectorless floatation behavior and surface electrochemical oxidation process of the pentlandite are investigated by using the single mineral floatation and cyclic voltammetry analysis. The results show that the surface of the pentlandite is hydrophobic,and the pentlandite is floatable for collectorless within the p H range from 4. 0 to 11. 0 corresponding potential range from 110 m V to 386 m V,it is moderately oxidized on the surface and a large number of hydrophobic sulfur are generated. The hydrophobic sulfur generated at the early oxidation stage is further oxidized to the hydrophilic sulfates and the mineral surface is covered, the electrochemical reaction is blocked and the flotability of the pentlandite is decreased in the high alkaline condition.

关 键 词：镍黄铁矿 浮选 电化学 循环伏安 

分 类 号：TD952[矿业工程—选矿] TD923.7