云南某氧化铜矿石选矿试验

云南某难选氧化铜矿石氧化程度高、泥化严重，有用矿物嵌布粒度粗细不均，其中硫化铜矿嵌布粒度较粗。按先浮硫化铜矿物，再浮氧化铜矿物的原则流程进行了选矿工艺技术条件研究。结果表明，氧化铜矿物采用分级分选工艺可以有效解决矿泥通过中矿返回不断循环、积累的问题；闭路流程最终获得了铜品位为21.43%、回收率为47.73%的硫化铜精矿和铜品位为17.41%、回收率为19.39%的氧化铜精矿，综合精矿的铜品位为20.09%、回收率为67.12%。

Beneficiation Tests of a Copper Oxide Ore from Yunnan

A refractory copper oxide in Yunnan with high degree of oxidation，serious mudding，fine or uneven disseminated size of useful minerals，and coarse disseminated copper sulfide,etc. Technical condition tests for beneficiation are made by the principle of firstly floating copper sulphide minerals and then floating copper oxide minerals. The results show that for copper oxide minerals，the grading separation process can effectively resolve the sludge constantly circulating and accumulating problems during the whole flow-sheet. Through the closed circuit，copper sulfide concentrate with Cu grade of 21.43%，and recovery of 47.73%，copper oxide concentrate with Cu grade of 17.41% and recovery of 19.39%，are gained respectively. In total concentrates，Cu grade is 20.09% and Cu recovery is 67.12%.