双旋流钨矿脱泥试验研究
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摘要
针对钨矿中细粒级(细泥)含量高、分选效果差的问题,提出了在浮选前采用双旋流钨矿脱泥工艺,并进行了试验研究。结果表明:选用φ75 mm旋流器与φ25 mm旋流器组合的方式,钨矿中的-10μm颗粒含量由31.42%降低到22.34%,浮选质量分数由28%上升到46.44%,总产率为88.97%;二段溢流中钨品位为0.27%,可浮选性低,将直接排入尾矿。双旋流钨矿脱泥工艺有助于减少选矿药剂的消耗,提高分选指标,具有较好的经济与社会效益。
In view of high content of fine particles in tungsten ore and poor separation efficiency, the paper proposed the desliming of tungsten ore with two hydrocyclones before flotation, and conducted test study.The results showed: φ 75 mm hydrocyclone and φ 25 mm hydrocyclone were combined to put into application,the content of-10 μm particles reduced from 31.42% to 22.34%, the mass fraction of the flotation slime rose from 28% to 46.44%, and the total yield reached 88.97%; the tungsten grade of second-stage overflow was 0.27%, since its low floatability, it was discharged directly into tailings. The desliming of tungsten ore with two hydrocyclones was helpful to reduce the consumption of beneficiation reagent and improve the separation indexes, which brought excellent economic and social benefit.
In view of high content of fine particles in tungsten ore and poor separation efficiency, the paper proposed the desliming of tungsten ore with two hydrocyclones before flotation, and conducted test study.The results showed: φ 75 mm hydrocyclone and φ 25 mm hydrocyclone were combined to put into application,the content of-10 μm particles reduced from 31.42% to 22.34%, the mass fraction of the flotation slime rose from 28% to 46.44%, and the total yield reached 88.97%; the tungsten grade of second-stage overflow was 0.27%, since its low floatability, it was discharged directly into tailings. The desliming of tungsten ore with two hydrocyclones was helpful to reduce the consumption of beneficiation reagent and improve the separation indexes, which brought excellent economic and social benefit.
引文
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[15]TIAN J,NI L,SONG T,et al.An overview of operating parameters and conditions in hydrocyclones for enhanced separations[J].Separation&Purification Technology,2018,206:268-285.
[2]任瑞晨,宋金虎,程明,等.低灰浮选尾煤的磨矿脱泥浮选工艺试验研究[J].煤炭学报,2015,40(5):1143-1147.
[3]徐其红.某氧化铜矿联合选矿工艺研究[J].有色金属(选矿部分),2018(3):11-16.
[4]肖骏,董艳红.盘龙铅锌矿尾矿浮选回收重晶石试验研究[J].化工矿物与加工,2017,46(11):14-18.
[5]何东,兰希雄.经济回收铜尾矿中低品位锌锡矿的研究与实践[J].矿产综合利用,2017(5):96-99.
[6]JIANG K,DICKINSON J E,GALVIN K P.Two-stage fast flotation of coal tailings using reflux flotation[J].Minerals Engineering,2016,98:151-160.
[7]GALVIN K P,ZHOU J,DICKINSON J E,et al.Desliming of dense minerals in fluidized beds[J].Minerals Engineering,2012,39(6):9-18.
[8]潘加彬,蒋茂林,韦新彦,等.钨细泥选矿研究现状综述[J].中国钨业,2015,30(4):48-52.
[9]刘建国,张军,汤玉和.某难选白钨矿预选工艺研究[J].矿产综合利用,2018(3):74-76.
[10]朴永超,朱阳戈,王中明.从重选尾矿中浮选回收微细粒白钨矿试验研究[J].矿冶,2014,23(4):20-23.
[11]郭劭卿.某白钨矿浮选尾矿综合回收微细粒级白钨试验研究[J].中国钨业,2013,28(6):21-24.
[12]JIANG LY,LIU P K,YANG X H,et al.Short-Circuit flow in hydrocyclones with arc-shaped vortex finders[J].Chemical Engineering&Technology,2018,41(9):1783-1792.
[13]张悦刊,曹井振,刘培坤,等.中矸磁尾粗煤泥重选回收精煤试验研究[J].中国矿业,2018,27(6):113-116.
[14]郭庆江.水力分级旋流器用于粗精煤泥回收工艺探讨[J].煤炭工程,2018(9):18-20.
[15]TIAN J,NI L,SONG T,et al.An overview of operating parameters and conditions in hydrocyclones for enhanced separations[J].Separation&Purification Technology,2018,206:268-285.