某低品位锌硫铁多金属矿选矿工艺流程研究

摘要

According to the characteristics of a low-grade zinc-pyrite-Iron ore,several processing solutions were compared,then detailed reagent condition tests and close-circuit tests were carried on.The results showed that:with adopted pyrite selective flotation-zinc flotation-magnetic separation flowsheet,Zn /S /Fe separation was effectively actualized.A pyrite concentrate with a S grade of 46.51% and a recovery of 93.70% was obtained.Meanwhile,a zinc concentrate with Zn grade and recovery of 47.16% and 55.23%,a iron ore concentrate with Fe grade and recovery of 66.54% and 28.18%,respectively,can be reclaimed.%根据某低品位锌硫铁多金属矿矿石的原矿性质，进行了多种流程方案的对比、详细的药剂条件试验和闭路试验研究。试验研究结果表明：采用硫优先浮选—锌浮选—磁选工艺流程，成功实现了锌硫铁的分选，获得硫精矿含 S 46．51％，回收率为93．70％；锌精矿含 Zn 47．16％，回收率为55．23％；铁精矿含铁66．54％，回收率为28．18％的理想指标。