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Based on the tailings-free mine concept, beneficiation and comprehensive utilization of tailings resources were studied for a magmatic hydrothermal gold mine in Hunan. A tailings-free mine technical system was established, adopting the process of gold recovery by a gravity-flotation combined process, quartz comprehensive recovery from gold tailings, and full-volume backfill of residual tailings. The technical route is as follows: gold is efficiently recovered via a vertical centrifuge gravity-flotation combined process, and a gold concentrate with an Au grade of 81.69 g/t and a recovery rate of 97.06% is obtained. Quartz is recovered from gold tailings by the desliming-high intensity magnetic separation-reverse flotation process, and a quartz concentrate with an SiO₂ grade of 98.86% and a recovery rate of 65.37% is obtained. The residual tailings with a yield of 38.23% are all applied to underground backfill. The process innovation effectively solves the problem of tailings disposal, realizes full-component resource utilization of ore and zero tailings discharge, and provides a technical reference for the green development of similar mines.

, authors=Dayong Sun^{1, 2, 3}, Peiyu Li^{1, 3}, Jie Li^{1, 3}, Zhiwei Zhu^{1, 3}, authorsList=Dayong Sun, Peiyu Li, Jie Li, Zhiwei Zhu, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1321893309790929656, articleId=1321893309245670134, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=无尾理念下某金矿选矿试验及尾矿综合利用研究, columnId=1226462297560892399, journalTitle=矿业研究与开发, columnName=选矿与资源综合利用, runingTitle=null, highlight=null, articleAbstract=

基于无尾矿山理念，针对湖南某岩浆热液型金矿开展选矿与尾矿资源综合利用研究，构建了“重-浮联合工艺回收金—金尾矿综合回收石英—剩余尾矿全量充填”的无尾矿山技术体系，技术路线为：采用立式离心机重-浮联合工艺高效回收金，获得金精矿Au品位为81.69 g/t，回收率为97.06%；采用“脱泥—强磁—反浮选”工艺从金尾矿中回收石英，获得SiO₂品位98.86%、回收率65.37%的石英精矿；最终将剩余尾矿（产率38.23%）全部用于井下充填。通过工艺创新，有效解决了尾矿处置难题，实现了矿石全组分资源化与尾矿零排放，为同类矿山绿色开发提供了技术参考。

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^2.School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
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^2．中南大学 资源加工与生物工程学院，湖南 长沙　410083
^3．湖南省矿山固废综合利用工程技术研究中心，湖南 长沙　410012, bio={"content":"

孙大勇（1989—），男，河北唐山人，硕士，高级工程师，主要从事选矿工艺及药剂研发工作。E-mail:2418361338@qq.com

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孙大勇（1989—），男，河北唐山人，硕士，高级工程师，主要从事选矿工艺及药剂研发工作。E-mail:2418361338@qq.com

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