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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 effects of hydrodynamic field on the flotation separation of pyrite and serpentinite were studied by means of flotation, sedimentation, adsorption experiments and microscopic observations. The mechanism was also analyzed. The results show that the microscopic serpentine can adhere to the surface of coarse pyrite by heterogeneous agglomeration, changing the apparent properties of pyrite and affecting the flotation of pyrite. The fluid field generated by high-intensity agitation can desorb the serpentine slime attached to the pyrite surface and increase the adsorption amount of the collector valerate on the surface of the pyrite, thereby enhancing the pyrite suppression by serpentine Flotation recovery rate. The stronger the hydrodynamic field is, the longer the action time is. The higher the adsorption amount of pentoxifylline on pyrite surface is, the higher the flotation recovery rate of pyrite is.