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福建某锌精矿铜钼综合回收试验研究

Experimental study on copper-molybdenum comprehensive recovery from a zinc concentrate in Fujian

  • 摘要: 福建某锌选矿厂的锌精矿含锌47.33 %、含铜1.29 %、含钼0.49 %,铜、钼一直未得到有效回收。针对该锌精矿,开展再磨脱药—铜钼混合浮选—铜钼分离流程试验研究,铜钼混合浮选采用一粗两扫三精—粗精矿再磨工艺流程,铜钼分离采用一粗一扫四精工艺流程。全流程闭路试验可得到含铜20.11 %、含金0.78 g/t、铜回收率65.9 %的铜精矿,含钼39.49 %、含铼18.28 g/t、钼回收率93.0 %的钼精矿,以及含锌49.53 %、锌回收率99.0 %的锌精矿,有效降低了锌精矿中铜、钼杂质含量,同时得到了铜精矿和钼精矿产品,实现了锌、铜、钼的高效分离。

     

    Abstract: The zinc concentrate of a zinc beneficiation plant in Fujian contains 47.33 % zinc,1.29 % copper,and 0.49 % molybdenum,with copper and molybdenum not effectively recovered.For this zinc concentrate,experimental research was conducted using a regrinding and agent removal-copper and molybdenum mixed flotation-copper and molybdenum separation process.The copper and molybdenum mixed flotation process employed a roughing stage,two scavenging stages,and three cleaning stages,followed by regrinding of the roughing concentrate,while the copper and molybdenum separation process included a roughing stage,a scavenging stage,and four cleaning stages.The closed-circuit test of the entire process yielded a copper concentrate containing 20.11 % copper and 0.78 g/t gold,with a  copper recovery rate of 65.9 %;a molybdenum concentrate containing 39.49 % molybdenum and 18.28 g/t rhenium,with a molybdenum  recovery rate of 93.0 %;and a zinc concentrate containing 49.53 % zinc,with a recovery rate of 99.0 %.This effectively reduced the impurities of copper and molybdenum in the zinc concentrate,while obtaining high-quality copper and molybdenum concentrates,achieving efficient separation of zinc,copper,and molybdenum.

     

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