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干式自磨无捕收剂浮选铜

Release date:2018-12-26  source:中南选矿网  Browse times:471
        产于热液型脉状矿床的黄铜矿经干式自磨后浮选,仅用少量起泡剂作为唯一的浮选药剂,对五个样品进行了实验室的浮选试验,都获得了成功。试验结果,单用起泡剂浮选比常规浮选(用调整剂、捕收剂、起饱剂)简单且效果好。在自然pH条件下浮选,铜的回收率和精矿品位都有所提高。所用试样采自秘鲁安第斯山某一铜矿,共生有磁黄矿、黄铁矿和少量毒砂。仅使用聚丙二醉甲基醚250克/吨(分二段在粗选添加),与常规添加石灰、氰化钠、Z -200等相比较,前者粗选铜精矿回收率98.8%,后者为93.9%;在同样三次精选条件下,最终精矿铜回收率,前者为91.0%,后者为71.9%(小型试验),三次精选精矿前者铜品位>25%,而常规法的铜品位低干19.4%0试验证实,单用起泡剂浮选时,粗精矿中的磁黄铁矿,黄铁矿和毒砂实际上要比黄铜矿的浮选速度为低。属于原生矿床的硫化矿适于采用此种浮选法。

 
 
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