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金属矿山 ›› 2016, Vol. 45 ›› Issue (01): 186-189.

• 综合利用 • 上一篇    下一篇

硫化浮选—酸浸工艺回收某铜钴尾矿中的铜钴

王振1,2,徐龙华2,肖军辉1,王进明2,傅开彬1   

  1. 1.西南科技大学环境与资源学院,四川 绵阳 621010;2.固体废物处理与资源化教育部重点实验室,四川 绵阳 621010
  • 出版日期:2016-01-15 发布日期:2016-03-11

Recovery of Cobalt and Copper from Cu-Co-bearing Tailings by Sulfuration Flotation-Acid Leaching Process

Wang Zhen1,2,Xu Longhua2,Xiao Junhui1,Wang Jinming2,Fu Kaibin1   

  1. 1.School of Resources and Environment,Southwest University of Science and Technology,Mianyang 621010,China;2.Key Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education,Southwest University of Science and Technology,Mianyang 621010,China
  • Online:2016-01-15 Published:2016-03-11

摘要: 四川会理某铜钴尾矿铜钴品位分别为0.84%和0.33%,-400目含量占65%,铜钴矿物氧化程度较高。为了充分回收其中的有用成分,减少金属残余对环境的潜在污染,采用硫化浮选—硫酸酸浸工艺进行了铜钴回收试验。结果表明:采用1粗2精2扫、中矿顺序返回硫化浮选流程处理该尾矿,最终可获得铜、钴品位分别为7.14%、4.15%,铜钴回收率分别为76.11%、87.16%的铜钴混合精矿;在硫酸与铜钴混合精矿质量比为15%,液固比为4∶1,浸出温度为75 ℃,浸出时间为100 min的情况下用硫酸酸浸铜钴混合精矿,铜、钴的浸出率分别为86.74%、81.36%。对应试样的铜、钴回收率分别为66.01%、70.91%,较好地实现了该尾矿中有用成分的回收。

关键词: 铜钴尾矿, 硫化浮选, 硫酸浸出

Abstract: The Cu-Co-bearing tailings,from Huili Sichuan Province,contain 0.84% Cu and 0.33% Co.It exhibits higher oxidation degree with the -400 mesh content of approximately 65%.In order to recover the useful components maximumly and reduce the environmental hazards of remained metal,the recovery of Cu and Co was conducted by the process of acid leaching after sulfuration flotation.The tests results demonstrated that the Cu-Co concentrate containing 7.14% Cu and 4.15% Co with the recovery of 76.11% Cu and 87.16% Co,respectively,was obtained through process of one roughing,two cleaning and two scavenging and middlings returned in order sulfuration flotation process.The leaching efficiency of Cu and Co reached 86.74% and 81.63% respectively under the condition of mass ratio 15% between sulfuric acid,liquid-solid ratio 4∶1,extraction temperature 75 ℃,extraction time 100 min.The gross recoveries of Cu and Co were 66.01% and 70.91%,and the tailings were utilized preferably.

Key words: Cu-Co bearing tailings, Sulfuration flotation, Sulfuric acid leaching