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Flotation tests were conducted for a complex refractory copper-lead-zinc polymetallic sulfide ore bearing arsenic and silver. By using a new high-efficient sulfide ore collector (CYC) and an environment friendly lead depressant (CYZ), the test with a flowsheet consisting of rough grinding, copper-lead-silver bulk flotation, classification and regrinding, reagent removal and Cu/Pb separation produced a copper concentrate grading 22.42% Cu and 11 549.74 g/t Ag with corresponding recoveries of 73.77% Cu and 83.85% Ag, as well as a lead concentrate grading 13.96% Pb and 6.61% Sb with corresponding recoveries of 19.45% Pb and 11.10% Sb. It is shown that with this technique, an efficient Cu/Pb separation can be actualized, while the associated Ag and Sb minerals can also be reclaimed effectively.

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对某含砷含银复杂难选铜铅锌硫化矿进行了浮选试验研究。使用新型高效硫化矿捕收剂CYC和环保型铅抑制剂CYZ，采用粗磨-铜铅混合浮选-分级再磨-脱药-铜铅分离工艺流程，获得了铜品位22.42%、银含量11 549.74 g/t，铜、银回收率分别为73.77%、83.85%的铜精矿，以及铅品位13.96%、锑含量6.61%，铅、锑回收率分别为19.45%、11.10%的铅精矿，实现了铜和铅的高效分离，伴生银、锑也得到了有效回收。

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吴承优（1990—），男，江西崇义人，工程师，硕士，主要研究方向为选矿工艺和药剂研发及产业化。

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吴承优（1990—），男，江西崇义人，工程师，硕士，主要研究方向为选矿工艺和药剂研发及产业化。

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