某钼铋硫混合精矿浮选分离试验

摘要

A poor molybdenum-bismuth-sulphur mixed concentrate with low grade and coarse particles,of which -0.074 mm account for 64%.Molybdenum and bismuth is mainly intergrowth in the ore.In order to obtain qualified molybdenum con-centrate and bismuth concentrate,flotation separation test were carried out.Results indicated that,samples reground to 85%passing 0.074 mm,via one roughing-one cleaning-two scavenging molybdenum and bismuth bulk flotation,one roughing-two cleaning-two scavenging bismuth depression and molybdenum flotation process,finally,obtained molybdenum concentrate with molybdenum grade of 53.13% and recovery of 88.95%,respectively,and 1.46% bismuth,bismuth concentrate with bismuth grade of 23.68% and recovery of 80.06%,and 3.87% molybdenum,sulphur concentrate with sulphur grade of 31.16% and recovery of 71.98%,0.32% molybdenum and 1.11% bismuth.%某钼铋硫混合精矿品位较低，粒度较粗，－0.074 mm占64％，钼、铋主要以连生体的形式存在。为获得合格的钼、铋精矿，对试样进行了浮选分离试验。结果表明，试样再磨至－0.074 mm占85％后，采用1粗1精2扫钼铋混浮、1粗2精2扫抑铋浮钼流程处理，最终获得钼品位为53.13％、钼回收率为88.95％、含铋1.46％的钼精矿，铋品位为23.68％、铋回收率为80.06％、含钼3.87％的铋精矿，以及硫品位为31.16％、硫回收率为71.98％、含钼0.32％、含铋1.11％的硫精矿。