低品位锡细泥选择性絮凝浮选试验研究
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摘要
试验矿样中矿泥含量高,矿物种类繁多,有用矿物锡石品位低,仅为0.40%,嵌布粒度微细,可浮性与锡石相近的方解石类碳酸盐矿物含量高,导致该锡细泥回收难度大,本试验研究了选择性分散-絮凝对锡细泥浮选回收的影响。锡细泥在矿浆pH值为6.5的环境下,添加分散剂水玻璃+CMC、絮凝剂APAM进行预处理,实现微细矿粒选择性分散-絮凝,之后采用组合捕收剂BY-9+P86,经过"一粗二精一扫"闭路浮选流程可得到品位10.34%、回收率80.83%的锡精矿。
In the character of high mud content and various types of minerals,only 0.40% cassiterite grade is in valuable mineral,fine particle size and high content of calcite carbonate minerals which have similar in floatability of cassiterite resulting in difficult to recover,the effect of selective dispersion-flocculation on flotation recovery of tin slime is investigated in this experiment.Under the condition of slurry pH=6.5,pretreated by adding the dispersant sodium silicate+ CMC and flocculant APAM,selective dispersion and flocculation of fine mineral particles are achieved in the tin slime.Then adopting the combined collector BY-9+P86,tin concentrate with grade of 10.34%and recovery of 80.83%can be obtained via the closed-circuit flotation process of"one rougher-two cleaner-one scavenger".
In the character of high mud content and various types of minerals,only 0.40% cassiterite grade is in valuable mineral,fine particle size and high content of calcite carbonate minerals which have similar in floatability of cassiterite resulting in difficult to recover,the effect of selective dispersion-flocculation on flotation recovery of tin slime is investigated in this experiment.Under the condition of slurry pH=6.5,pretreated by adding the dispersant sodium silicate+ CMC and flocculant APAM,selective dispersion and flocculation of fine mineral particles are achieved in the tin slime.Then adopting the combined collector BY-9+P86,tin concentrate with grade of 10.34%and recovery of 80.83%can be obtained via the closed-circuit flotation process of"one rougher-two cleaner-one scavenger".
引文
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[2]杨金林,周文涛,蒋林伶,等.锡石选矿研究概述[J].现代矿业,2016(5):83-85.YANG Jinlin,ZHOU Wentao,JIANG Linling,et al.Summary of cassiterite beneficiation research[J].Modern Mining,2016(5):83-85.
[3]邢万里,王安建,王高尚,等.我国锡资源安全简析[J].中国矿业,2016,25(7):11-15.XING Wanli,WANG Anjian,WANG Gaoshang,et al.Analysis of tin security in China[J].China Mining Magazine,2016,25(7):11-15.
[4]李啸.全球锡资源生产与消费历史梗概[J].矿床地质,2014,33(S1):933-934.LI Xiao.A summary of the history of production and consumption of tin resources in the world[J].Mineral Deposits,2014,33(S1):933-934.
[5]刘玫华.四川某微细粒矽卡岩型锡矿选矿试验研究[D].昆明:昆明理工大学,2009.
[6]郑树荣.世界锡资源形势预测[J].昆明理工大学学报:理工版,2000,25(2):1-4.ZHENG Shurong.The prediction of tendency of tin resource in the world[J].Journal of Kunming University of Science and Technology:Science and Technology,2000,25(2):1-4.
[7]徐晓衣.微细粒锡石高效回收工艺与机理研究[D].赣州:江西理工大学,2018.
[8]陈淼,牛福生,白丽梅.三种分散剂对微细粒赤铁矿、石英分散行为的影响[J].中国矿业,2014,23(2):116-118.CHEN Miao,NIU Fusheng,BAI Limei.Dispersion behaviors research of three dispersants on the micro-fine hrmatite and quartz[J].China Mining Magazine,2014,23(2):116-118.
[9]苏涛,陈铁军,张一敏,等.分散-絮凝对某微细粒磁铁矿弱磁精选效果的影响[J].金属矿山,2016(9):83-87.SU Tao,CHEN Tiejun,ZHANG Yimin,et al.Influence of dispersion-flocculation on micro-fine magnetite low intensity magnetic separation[J].Metal Mine,2016(9):83-87.
[10]王骆宾.锡细泥矿石综合回收工艺研究[D].赣州:江西理工大学,2016.
[11] BARAKAT M A.Recovery of lead,tin and indium from alloy wire scrap[J].Hydrometallurgy,1998,49:63-73.
[12]王勇,吴爱祥,王洪江,等.絮凝剂用量对尾矿浓密的影响机理[J].北京科技大学学报,2013,35(11):1419-1423.WANG Yong,WU Aixiang,WANG Hongjiang,et al.Influence mechanism of flocculant dosage on tailings thickening[J].Journal of University of Science and Technology Beijing,2013,35(11):1419-1423.
[13]朱瑞仪.聚丙烯酰胺絮凝剂的机理和分子设计研究[J].当代化工研究,2018(12):120-121.ZHU Ruiyi.Study on the mechanism and molecular design of polyacrylamide flocculant[J].Contemporary Chemical Research,2018(12):120-121.