Based on characteristics of the rare earth tailingsthat the grade of the fluorite and barite is relatively low and the degree of liberationis relatively high,through experimental research,fluorite and barite were recovered by flotation technology of fluorite-baritemixed flotation-fluorite-barite flotation separation-reverse flotation of barite concentrate.EMLB-1 and EMLY-1 researched by Iustitute of Multipurpose Utilization of Mineral Resource was applied.EMLB-1 could collect fluorite and batite,EMLY-1 could depress batite in floatation separation between fluorite and batite.Inreverse flotationof barite concentrate,the test effect was improved by depressing barite and adopting NaF to activate coal gangue.Finally,the fluorite concentrate with CaF2grade of 97.33％,BaSO4of 0.03％ and the recovery of 74.40％ and thebatite concentrate with BaSO4 grade of 90.42％,BaSO4of 2.65％ and recovery of barite 90.12％ were obtained.%针对稀土选矿尾矿中萤石与重晶石品位较低、单体解离度较好的特征,通过试验研究,确定采用萤石、重晶石混合浮选-萤石、重晶石浮选分离-重晶石粗精矿反浮选的工艺流程,对该稀土尾矿中的萤石、重晶石进行回收.我所自行研制的浮选药剂EMLB-1与EMLY-1在本研究中得到了很好的应用,其中EMLB-1可有效地对萤石、重晶石进行捕收,EMLY-1在萤石、重晶石浮选分离中对重晶石抑制效果明显；在重晶石粗精矿反浮选中,在抑制重晶石的前提下,采用NaF选择性的活化脉石矿物,大大地增强了反浮选的效果.最终试验获得了CaF2品位97.33％、含BaSO40.03％、回收率74.40％的萤石精矿和BaSO4品位90.42％、含CaF22.65％、回收率90.12％的重晶石精矿,使得该尾矿中的萤石与重晶石得到了有效的分离.
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