In view of the poor quality of molybdenum concentrate from original copper suppression molybdenum float process in a Jiangxi copper molybdenum washery, mineralogical study on the copper molybdenum ore was conducted. It was found out that the ore was characterized by complex mineral dissemination and molybdenite was hard for monomer dissociation. So two kinds of test process were applied, which included mixture flotation of copper and molybdenum, then separation of copper and molybdenum after regrinding of mixed concentrate, as well as mixture flotation of copper and molybdenum, then separation of copper and molybdenum on mixed concentrate and regrinding of molybdenum rough concentrate. The results showed that the second process obtained molybdenum concentrate with 48.52% of molybdenum grade, 0.51% of copper grade and 88.95% of molybdenum recovery rate and copper concentrate with 19.66% of copper grade, 0.20% of molybdenum grade and 83.20% of copper recovery rate. Compared with the original process, the indexes of molybdenum concentrate enhanced greatly, which brought considerable economic benefits.%针对江西某铜钼矿选厂原抑铜浮钼工艺产生的钼精矿难以达到质量标准的问题,对该矿物进行工艺矿物学研究,发现矿物嵌布特征复杂,辉钼矿难以单体解离.因此采用铜钼混合浮选—混合精矿再磨—铜钼分离和铜钼混合浮选—混合精矿铜钼分离—钼粗精矿再磨2种工艺流程进行试验研究,结果表明:铜钼混合浮选—混合精矿铜钼分离—钼粗精矿再磨工艺效果较好,获得了含钼48.52％,含铜0.51％,钼回收率为88.95％的钼精矿；含铜19.66％,含钼0.20％,铜回收率83.20％的铜精矿.同选矿厂原工艺流程相比,钼精矿指标大幅提升,为矿山带来可观的经济效益.
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