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In the actual production, not only the copper oxide ore has a high content of slime, but also the copper minerals therein are prone to be lost during the beneficiation. In consideration of these problems, a cyclone desliming system was added to process the tailings after the copper sulfide was preferentially floated. The industrial experiment results show that a copper oxide concentrate grading 19.20% Cu can be obtained with the process recovery of 76.24% by adopting a direct sulphidizing flotation process to reclaim copper oxide minerals from copper sulfide flotation tailings, and the copper grade of tailings can be reduced to 0.94%. After copper sulfide flotation tailings were deslimed by cyclone, a process consisting of flotation of copper oxide minerals from underflow and a wet leaching to recover copper resource from fine slime (overflow) was adopted, resulting in a comprehensive copper oxide concentrate with Cu grade of 24.63% and process recovery of 85.55%, and the final tailings with Cu grade reduced to 0.60%. The indices of the copper oxide concentrate from the flowsheet containing cyclone desliming process are obviously superior to those by direct sulphidizing flotation process. Besides, this flow is relatively simple with reduced unit consumption of reagent for copper oxide flotation.

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针对某氧化铜矿含泥量高且铜金属易流失等问题，对原矿优先选出硫化铜后的尾矿产品新增旋流器脱泥系统。工业试验结果表明，硫化铜浮选尾矿直接硫化浮选氧化铜矿，可获得铜品位19.20%、作业回收率76.24%的综合氧精矿，尾矿铜品位0.94%；硫化铜浮选尾矿经旋流器脱泥、沉砂浮选氧化铜矿，可获得铜品位24.63%、作业回收率67.84%的综合氧精矿，旋流器溢流（细泥）可通过湿法浸出工艺进一步回收铜，最终尾矿铜品位降至0.60%。应用旋流器脱泥的氧化铜矿精矿指标明显高于直接硫化浮选，且生产流程相对简化，氧化铜矿浮选段药剂单耗也有所下降。

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刘国晨（1989—），男，江西泰和人，工程师，主要从事矿物加工工艺研究与应用工作。

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刘国晨（1989—），男，江西泰和人，工程师，主要从事矿物加工工艺研究与应用工作。

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