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Metal Mine ›› 2026, Vol. 55 ›› Issue (2): 112-120.

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Experimental Study on Recovery of Silver-Copper-Zinc from a High Silver-Tin-Copper-Zinc Symbiotic Mine in Inner Mongolia#br#

YANG Kaizhi1,2,3　NIU Yaohui4　WANG Chenghang1,2,3　WANG Zhengguo4　LI Yu′an4   CHENG Pingxuan4　CUI Huiping4#br#   

  1. 1. Institute of Resources Utilization and Rare Earth Development,Guangdong Academy of Science,Guangzhou 510651,China;
    2. State Key Laboratory of Rare Metal Separation and Comprehensive Utilization,Guangzhou 510651,China;
    3. Guangdong Provincial Key Laboratory of Mineral Resources Development and Comprehensive Utilization,Guangzhou 510651,China;
    4. West Ujimqin Banner Yinman Mining Co. ,Ltd. ,Xilinhot 026000,China
  • Online:2026-02-15 Published:2026-03-03

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Abstract: Aiming at the problem of low recovery rate of silver and copper in the on-site separation process of a high silver-
tin-copper-zinc associated ore in Inner Mongolia (with Sn grade of 0. 86%,Ag grade of 125. 5 g/ t,Cu grade of 0. 32%,Zn
grade of 1. 14%),mineral processing technology optimization tests were carried out. On the premise of rough grinding of raw
ore (with the fraction of -0. 074 mm accounting for 55%) while ensuring tin preservation,a new process of "silver-copper rapid
flotation,sulfide ore bulk flotation,separation of silver-copper from zinc-sulfur,zinc-sulfur separation" was proposed,which
realized the efficient recovery of Ag,Cu and Zn. The closed-circuit test yielded a comprehensive Ag-Cu concentrate with Cu
grade of 9. 62%,Ag grade of 4 104. 99 g/ t,Cu recovery rate of 82. 94%,and Ag recovery rate of 90. 29%. Meanwhile,the zinc
concentrate achieved Zn grade of 42. 85%,Ag grade of 316. 80 g/ t,Zn recovery rate of 69. 94%,and Ag recovery rate of
4. 70%. The research results indicated that this process not only ensures Sn recovery,but also significantly improves the recovery
rates of Ag and Cu,providing a technical basis for the comprehensive utilization of this mineral resource.

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