铝土矿浮选新型捕收剂的捕收性能及机理研究  

Flotation performance and mechanism of new bauxite flotation collectors

作　　者：朱一民[1,2,3] 张凛 陈佳丽 李艳军[1,2,3] 韩跃新[1,2,3] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004 [2]东北大学2011钢铁共性技术协同创新中心,辽宁沈阳110004 [3]辽宁省难采选铁矿石高效开发利用技术工程实验室,辽宁沈阳110004 [4]唐山陆凯科技有限公司,河北唐山063000

出　　处：《中国矿业》2018年第3期121-126,137,共7页China Mining Magazine

基　　金：国家自然科学基金项目资助(编号：51274056;51474055)

摘　　要：通过一水硬铝石和高岭石的单矿物浮选试验、接触角、红外光谱、和ζ电位测量分析了东北大学研制的DJL-1和DJL-2捕收剂在铝土矿正浮选中的浮选行为和作用机理。一水硬铝石与DJL-1和DJL-2作用后接触角变大、疏水性变强;高岭石与DJL-1作用后接触角几乎不变,与DJL-2作用后接触角变大。DJL-1使一水硬铝石和高岭石表面ζ电位均负向增加,DJL-2对一水硬铝石和高岭石表面ζ电位影响较小,分别使用DJL-1和DJL-2,一水硬铝石和高岭石的最大回收率之差为54.5%和70.5%,DJL-2在更宽的温度和pH范围内获得更好的浮选结果;DJL-1和DJL-2在一水硬铝石表面存在键合吸附和氢键作用,DJL-1与高岭石表面存在氢键作用。结果表明,DJL-1和DJL-2均是铝土矿正浮选的优良捕收剂,且DJL-2更优。The flotation behavior and interaction mechanism of DJL-1 and DJL-2 with bauxite in the process of flotation were studied by single mineral flotation test,measuring the contact angle,infrared spectroscopy,zeta potential.Diaspore has larger contact angle and stronger hydrophobicity after contact with DJL-1 or DJL-2.The contact angle of kaolinite is almost unchanged after contact with DJL-1.However,it is larger after contact with DJL-2.DJL-1 increases the surface Zeta potential of diaspore and kaolinite negatively.DJL-2 has little influence on the surface Zetapotential of diaspore and kaolinite.The maximum difference of recovery rate of diaspore and kaolinite was 54.5% and 70.5%,when using DJL-1 and DJL-2 respectively.DJL-2 obtained better flotation results at wider temperature and pH range.The action between diaspora and DJL-1,DJL-2 is chemical adsorption mainly and go with hydrogen bond in part.There are hydrogen bonds between DJL-1 and kaolinite surface.The results show both DJL-1 and DJL-2 are excellent collectors for positive flotation of bauxite and DJL-2 is better.

关 键 词：捕收剂 浮选 铝土矿 

分 类 号：TD923[矿业工程—选矿]