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A New Collector for Effectively Increasing Recovery in Copper Oxide Ore-Staged Flotation

机译：有效提高氧化铜矿石分段浮选回收率的新型收集器

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A new method, staged flotation for effectively increasing the recovery of ultra-fine copper oxide ore with a new type of collector (ZH-1, C3-5 carbon chain xanthate) is proposed for the first time. The flotation process and mechanism were examined by flotation tests, entrainment rate analysis, laser particle size experiments and microscopic imagery as well as economic feasibility analysis. It was demonstrated that the collector isoamyl sodium xanthate (ISX) shows a good collection ability (recovery exceeded 95%) for azurite, but the recovery was relatively much lower for malachite (only near 80%) due to the different particle size distribution. The new type of xanthate ZH-1 has shown a high-efficiency collection performance for fine-grained malachite. The recovery achieved for ?10 μm malachite was more than 95% when the ZH-1 dosage was 150 mg/L, while the average particle size of ?10 μm malachite sharply increased from 4.641 μm to 9.631 μm. The batch flotation results indicated that the copper oxide flotation recovery increased from 79.67% to 83.38%, and the grade also raised from 18.08% to 18.14% after using the staged flotation technology with ZH-1 as collector during the flotation of ?25 μm ore. It was confirmed that this technology was quite effective for the recovery of copper oxide at the Dishui Copper Processing Plant, which successfully increased its gross profit by 1.6 million US$ per year.
机译：首次提出了一种分阶段浮选的新方法，即利用新型捕收剂（ZH-1，C3-5碳链黄药）有效地提高超细氧化铜矿石的回收率。通过浮选试验，夹带率分析，激光粒度实验和显微图像以及经济可行性分析，考察了浮选过程和机理。结果表明，捕收剂异戊基黄药酸钠（ISX）对蓝铜矿具有良好的捕集能力（回收率超过95％），但孔雀石的回收率相对较低（仅接近80％），原因是粒径分布不同。新型黄药ZH-1对细孔雀石具有高效收集性能。当ZH-1剂量为150 mg / L时，？10μm孔雀石的回收率超过95％，而？10μm孔雀石的平均粒径从4.641μm急剧增加到9.631μm。分批浮选结果表明，在φ25μm矿石浮选过程中，采用ZH-1分级捕集技术，铜氧化物的浮选回收率从79.67％提高到83.38％，品位也从18.08％提高到18.14％。 。经证实，该技术在滴水铜加工厂的氧化铜回收方面相当有效，该厂每年成功地将毛利润提高了160万美元。

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