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金属矿山 ›› 2014, Vol. 43 ›› Issue (04): 91-94.

• 矿物工程 • 上一篇    下一篇

广西某低品位铜镍矿石选矿工艺研究

阙绍娟1,黄荣强2,卢琳1   

  1. 1.广西冶金研究院,广西 南宁 530023;2.广西国土资源规划院,广西 南宁 530022
  • 出版日期:2014-04-15 发布日期:2014-09-05

Beneficiation Experiment on a Low-grade Copper-Nickel Ore from Guangxi

Que Shaojuan1,Huang Rongqiang2,Lu Lin1   

  1. 1.Guangxi Metallurgical Research Institute,Nanning 530023,China;2.Guangxi Land and Resources Planning Institute,Nanning 530022,China
  • Online:2014-04-15 Published:2014-09-05

摘要: 广西某低品位铜镍矿石含铜0.25%、含镍0.43%,镍主要以镍黄铁矿形式存在,铜主要以黄铜矿形式存在,铜、镍矿物均有一定程度氧化且关系密切。为了给该矿石的开发利用提供依据,对其进行了选矿工艺研究。通过对优先浮铜再浮镍方案、铜镍混合浮选方案、铜镍混合浮选再分离方案以及磁选—铜镍混合浮选方案的对比,决定采用铜镍混合浮选方案处理该矿石。按该方案进行详细的试验研究,结果表明,在-0.074 mm占74%的磨矿细度下,以碳酸钠为矿浆调整剂、丁黄药为捕收剂、2号油为起泡剂,经1粗选2扫选2精闭路浮选,可获得铜品位为5.77%、镍品位为8.31%、铜回收率为86.33%、镍回收率为76.60%的铜镍混合精矿。

关键词: 低品位铜镍矿石, 镍黄铁矿, 黄铜矿, 铜镍混合浮选

Abstract: A low-grade copper-nickel ore in Guangxi contains Cu of 0.25% and Ni of 0.43%.Nickel mainly exists in the form of pentlandite,while copper in the form of chalcopyrite.Both copper and nickel minerals have a certain degree of oxidation and are closely disseminated.In order to provide a basis for the development and utilization of the ore,beneficiation experiments were carried out.By process comparison of copper flotation and then nickel,copper-nickel bulk flotation,bulk flotation of copper-nickel and then separation,magnetic separation-copper-nickel bulk flotation,the copper-nickel bulk flotation process was chosen to deal with the ore.The research by the process indicated that copper-nickel mixed concentrate with copper grade and recovery of 5.77% and 86.33%,nickel grade and recovery of 8.31% and 76.60% respectively were obtained at the grinding fineness of 74% passing 0.074mm,with sodium carbonate as regulator,butyl xanthate as collector,2# oil as frother,through the process flowsheet of one roughing,two-cleaning,and two-scavenging.

Key words: Low-grade copper-nickel ore, Pentlandite,Chalcopyrite, Copper-nickel bulk flotation