江西赣州某钨尾矿综合回收利用工艺

    Research on the Comprehensive Recovery and Utilization Technology of a Tungsten Tailing in Ganzhou, Jiangxi Province

    • 摘要: 江西赣州某钨尾矿中主要矿物为石英,次要矿物为钾长石、斜长石、锂白云母、铁锂云母、黑云母等,Li2O品位为0.19%,锂主要富集在云母类矿物中。为确定该钨尾矿的开发利用工艺,针对该钨尾矿的特点,通过系统的实验研究,采用脱泥-浮选回收锂云母,选锂尾矿采用磁选-浮选回收石英,剩余产品作为水泥用黏土质原料的工艺,获得产率10.76%,Li2O品位1.41%、 Rb2O品位0.39%, Li2O回收率76.39%的锂云母精矿;产率64.79%,SiO2品位95.52%,SiO2回收率71.39%的石英精矿;产率24.45%的水泥用黏土质原料,实验取得了较好的选矿技术指标,成功实现了该钨尾矿全资源化利用,为该钨尾矿开发利用提供了技术支持。

       

      Abstract: Main mineral composition of a tungsten tailing in Ganzhou, Jiangxi Province is quartz, and the secondary minerals are potash feldspar, plagioclase, lithium muscovite, zinnwaldite, biotite, etc.. The grade of Li2O is 0.19%, and lithium is mainly concentrated in mica minerals. In order to determine the development and utilization process of the tungsten tailings, based on their characteristics, a systematic experimental study was conducted to recover lithium mica using desliming flotation, and quartz using magnetic separation flotation for lithium tailings. The remaining products were used as clay raw materials for cement. A lithium mica concentrate with a yield of 10.76%, a Li2O grade of 1.41%, an Rb2O grade of 0.39%, and a Li2O recovery rate of 76.39% was obtained, quartz concentrate with a yield of 64.79%, SiO2 grade of 95.52%, and SiO2 recovery rate of 71.39% The clay raw material used for cement with a yield of 24.45% has achieved good beneficiation technical indicators through experiments, and successfully achieved the full resource utilization of the tungsten tailings, providing technical support for the development and utilization of the tungsten tailings.

       

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