镁离子对磁黄铁矿浮选的影响及机理  

The Influence of Magnesium Ion on Pyrrhotite Flotation and Its Mechanism

作　　者：陈康康 石晴[1] 张国范[1] CHEN Kangkang;SHI Qing;ZHANG Guofan(School of Minerals Processing and Bioengineering,Central South University,Changsha,Hunan 410083,China)

机构地区：[1]中南大学资源加工与生物工程学院,湖南长沙410083

出　　处：《矿业研究与开发》2020年第5期132-135,共4页Mining Research and Development

基　　金：中南大学自主探索项目(2018zzts801).

摘　　要：磁黄铁矿是硫化铜镍矿石中常见的硫化矿物,镁离子是其浮选矿浆中常见的离子。研究了矿浆pH=11时,镁离子对磁黄铁矿浮选的影响。浮选试验表明,镁离子抑制磁黄铁矿的浮选;溶液化学计算和XPS分析表明,镁离子主要以Mg(OH)2的形式存在于磁黄铁矿表面;吸附量测试表明,这种亲水性的组分导致捕收剂KAX(戊基黄原酸钾)在磁黄铁矿表面吸附量降低,进而抑制了磁黄铁矿的浮选。Pyrrhotite is a common sulfide mineral in copper-nickel sulfide ores,and magnesium ion is a common ion in the flotation pulp of Pyrrhotite.The effect of magnesium ion on pyrrhotite flotation at the condition of pH=11 was studied in this paper.The flotation experiments showed that magnesium ions inhibited the pyrrhotite flotation.Solution chemistry calculation and XPS analysis showed that magnesium ions mainly existed on the surface of pyrrhotite in the form of Mg(OH)2.The adsorption tests showed that the adsorption capacity of collector KAX(amyl potassium xanthate)on the surface of pyrrhotite decreased due to the hydrophilic component,which in turn inhibited the pyrrhotite flotation.

关 键 词：镁离子 磁黄铁矿 浮选 

分 类 号：TD923[矿业工程—选矿]