蛇纹石对硼镁石浮选的影响  

Effect of Serpentine on Flotation of Ascharite

作　　者：李治杭 韩跃新[1] 李艳军[1] 高鹏[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）》2017年第8期1154-1157,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51204033);辽宁省教育厅一般项目(L2014088)

摘　　要：针对蛇纹石易恶化硼镁石浮选环境的问题,通过浮选试验研究了不同粒度蛇纹石及矿物量配比对硼镁石浮选效果的影响.试验结果表明:浮选过程中蛇纹石与硼镁石颗粒间易发生相互作用,随着矿样中蛇纹石含量增加及蛇纹石粒度减小,硼镁石回收率逐渐下降,并且细粒级蛇纹石对硼镁石回收率影响更为明显,能显著降低硼镁石回收率.结合矿物zeta电位的测定及DLVO理论计算,对溶液中矿物颗粒间作用机理进行了分析,表明矿物表面电性差异是矿物颗粒间相互作用的根本原因.Aiming at the problem that serpentine can deteriorate the flotation environment of ascharite, the effects of different sizes of serpentine and minerals ratio on the flotation efficiency of ascharite were investigated by flotation experiments.The results showed that the interaction between serpentine and ascharite particles can occur easily during flotation process.With the increase of content and the decrease of particle size for serpentine,the recovery of ascharite decreases gradually.Besides, fine serpentine has more prominent effect on flotation recovery of ascharite and can lower the recovery of ascharite more remarkably.The mechanism of mineral particles interaction was also studied through zeta potential analysis and DLVO theory calculation.The result indicated that minerals surfaces with opposite charges are the basic reason of the interaction between mineral particles.

关 键 词：蛇纹石 硼镁石 浮选 DLVO理论 

分 类 号：TD923[矿业工程—选矿]