从某钨重选尾矿中浮选分离石英和长石的试验研究

Flotation Separation of Quartz and Feldspar from a Tungsten Gravity Tailings

  • 摘要: 某钨重选尾矿中含有丰富的石英(含量52.69%)、长石(含量31.84%)和云母(含量10.00%)等非金属矿产资源,其中K2O、Na2O和SiO2含量分别为5.22%、1.45%和75.41%。为充分、高效回收利用该尾矿中的长石和石英资源,进行了矿物浮选分离的试验研究。采用无氟无酸法浮选分离钨重选尾矿中的云母、长石和石英。结果表明,采用阴阳离子组合捕收剂TB-1和TB-2,预先浮选脱除云母;再以TY-1为抑制剂、TH-1为活化剂、TB-1为捕收剂进行石英和长石的浮选分离,获得了产率为25.43%、K2O品位10.51%、Na2O品位3.11%、Al2O3品位17.02%、Fe2O3品位0.14%的长石产品以及产率为27.74%、SiO2品位98.51%、Fe2O3品位0.09%的石英产品。

     

    Abstract: The tungsten gravity tailings are rich in non-metallic mineral resources such as quartz (content: 52.69%), feldspar (content: 31.84%) and mica (content: 10.00%), with K2O, Na2O and SiO2 contents of 5.22%, 1.45% and 75.41%, respectively. In order to fully and efficiently recover the feldspar and quartz resources from the tungsten gravity tailings, a experimental study of flotation separation was conducted. A fluoride-free and acid-free flotation method was used, and the mica was removed by pre-flotation with the combined anionic and cationic collectors TB−1 and TB−2, quartz and feldspar were further separated by flotation using TY−1 as depressant, TH−1 as activator and TB−1 as collector. As a result, the yield of feldspar products was 25.43%, of which the grades of K2O, Na2O, Al2O3, Fe2O3 were 10.51%, 3.11%, 17.02%, 0.14%, respectively, and the yield of quartz products was 27.74%, of which the grade of SiO2, Fe2O3 was 98.51% and 0.09% respectively.

     

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