蛇纹石/黄铁矿浮选分离中流体力场的作用  

Effect of Fluid Force Field on the Flotation Separation of Serpentine/Pyrite

作　　者：冯博[1] 卢毅屏[2] 汪惠惠[1] 

机构地区：[1]江西理工大学江西省矿业工程重点实验室,江西赣州341000 [2]中南大学资源加工与生物工程学院,湖南长沙410083

出　　处：《矿物学报》2016年第1期150-155,共6页Acta Mineralogica Sinica

基　　金：国家自然科学基金资助项目(批准号:51564014);中国博士后科学基金(批准号:2015M582759XB)

摘　　要：通过浮选、沉降、吸附量试验及显微镜观测,研究了流体力场对黄铁矿与蛇纹石浮选分离的影响,并对其机理进行了分析。结果表明,微细粒蛇纹石能够通过异相凝聚作用附着在粗颗粒黄铁矿表面,改变黄铁矿的表观性质,影响黄铁矿的浮选。高强度搅拌产生的流体力场能够脱附黄铁矿表面附着的蛇纹石矿泥,提高捕收剂戊黄药在黄铁矿表面的吸附量,从而提高被蛇纹石抑制的黄铁矿的浮选回收率。流体力场的强度越强,作用时间越长,黄铁矿表面戊黄药的吸附量越高,黄铁矿浮选回收率越高。The effect of fluid force field on the flotation separation of serpentine/pyrite was studied through flotation experiment, sedimentation test, adsorption test and microscope observation, and its mechanism was also analyzed. Results show that the fine grain serpentine can adhere to pyrite surface via heterogeneous condensation and change the apparent properties of pyrite, which will influence the flotation of pyrite. The fluid force field can take off serpentine slime from pyrite surface and improve the adsorption amount of collector amyl xanthate on pyrite surface, thus improve the flotation recovery of the pyrite depressed by serpentine. The stronger is strength of the force field and the longer of the time take, the higher is the amyl xanthate adsorption quantity and the pyrite flotation recovery.

关 键 词：蛇纹石 黄铁矿 浮选分离 流体力场 吸附量 

分 类 号：P579[天文地球—矿物学] TD952[天文地球—地质学]