黄金科学技术 ›› 2021, Vol. 29 ›› Issue (1): 164-172.doi: 10.11872/j.issn.1005-2518.2021.01.114
• 采选技术与矿山管理 • 上一篇
摘要:
甘肃某难选金铜氧化矿金含量为4.83 g/t,铜含量为1.18%,铜氧化率高达95.87%。铜矿物以难选的硅孔雀石为主,且与脉石矿物关系密切,金与铜矿物呈伴生关系。对原矿工艺矿物学进行了系统的研究,分析了尾矿中铜、金损失的原因。在磨矿细度为-74 μm占80%,Na2S作硫化剂,CuSO4作活化剂,丁基黄药、羟肟酸和25号黑药作捕收剂的条件下,采用一次粗选,四次扫选,粗精矿再磨后三次精选硫化浮选工艺流程,可获得金品位为86.65 g/t、金回收率为89.11%,铜品位为16.93%、铜回收率为71.92%,银品位为216.24 g/t、银回收率为87.26%的金铜精矿。金铜精矿可采用热压预氧化—无氰化工艺流程回收金铜,该选冶流程可为金铜氧化矿的开发利用提供借鉴。
中图分类号:
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