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A lead-zinc deposit is rich in valuable metals of gold and silver. In order to improve the economic benefits of products, the associated gold and silver should be enriched in lead concentrate to the maximum extent. Based on the actual situation in the production, the distribution of associated gold and silver in the products after mineral processing was ascertained, and then optimization tests were perform. The results showed that most of the associated gold and silver were concentrated in the lead concentrate, and the recovery of gold and silver was positively correlated with the recovery of lead. Without altering the original reagent regime for lead flotation, ethyl xanthate was introduced as an auxiliary collector in a close-circuit test adopting a flowsheet consisting of one stage of roughing, two stages of cleaning and two stages of scavenging. And the obtained lead concentrate with grade around 50% can have a high enrichment of gold and silver and a low content of zinc. It is concluded that gold and silver resources can be comprehensively recovered, which can bring in the maximized economic benefit.

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某铅锌矿床富含金、银等有价金属，为了提高产品经济效益，尽可能将伴生金、银富集在铅精矿中，结合生产实际查明了伴生金、银在选矿产品中的走向分布并开展了优化试验研究。结果表明，伴生金、银大部分富集在铅精矿中，且金、银回收率与铅回收率呈正相关关系。在原有选铅药剂制度不变条件下开展了辅助捕收剂试验，证实添加少量乙基黄药作辅助捕收剂，经一粗二精二扫闭路浮选，在铅精矿品位50%左右时，金、银在铅精矿中的富集程度较高，且铅精矿中锌互含较低，实现了金、银资源综合回收和产品经济效益最大化。

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聂世华（1969—），男，湖南祁阳人，高级工程师，主要从事有色金属选矿技术研究及生产管理工作。

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聂世华（1969—），男，湖南祁阳人，高级工程师，主要从事有色金属选矿技术研究及生产管理工作。

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