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金属矿山 ›› 2015, Vol. 44 ›› Issue (01): 154-156.

• 综合利用 • 上一篇    下一篇

豫西某高硫低铜铁矿石铜硫尾矿选铁试验

吕良1,2,3,马驰1,2,郭珍旭1,2,岳铁兵1,2,李文军1,2,刘磊1,2   

  1. 1.中国地质科学院郑州矿产综合利用研究所,河南 郑州 450006;2.国土资源部多金属矿评价与综合利用重点实验室,河南 郑州 450006;3.东北大学资源与土木工程学院,辽宁 沈阳 110819
  • 出版日期:2015-01-15 发布日期:2015-07-28
  • 基金资助:

    * 中国地质调查局地质调查工作项目(编号:12120113088600)。

Iron Recovery from Copper and Sulfur Flotation Tailings of a High Sulfur and Low Copper Iron Ore in Western Henan

Lu Liang1,2,3,Ma Chi1,2,Guo Zhenxu1,2,Yue Tiebing1,2,Li Wenjun1,2,Liu Lei1,2   

  1. 1.Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,Chinese Academy of Geological Sciences,Zhengzhou 450006,China; 2.Key Laboratory of Evaluation and Multipurpose Utilization of Polymetallic Ore of Ministry of Land and Resources,Zhengzhou 450006,China;3.College of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China
  • Online:2015-01-15 Published:2015-07-28

摘要: 铁品位为26.06%的铜硫浮选尾矿中残存有少量难浮磁黄铁矿,弱磁选回收其中的磁铁矿时,该部分磁黄铁矿因磁性较强而进入铁精矿中,导致铁精矿硫含量严重超标。为了获得合格铁精矿,对铜硫浮选尾矿弱磁选铁精矿进行了反浮选脱硫试验研究。结果表明,采用1粗1精1扫、中矿顺序返回闭路流程处理铁品位为63.14%、硫含量达2.05%弱磁选精矿,最终获得了铁品位为64.53%、含硫0.28%、铁回收率为47.09%的合格铁精矿。弱磁选铁精矿反浮选脱硫效果良好,可作为现场改造的依据。

关键词: 弱磁选精矿, 磁铁矿, 磁黄铁矿, 反浮选脱硫

Abstract: There is little difficult-to-float pyrrhotite residual in copper and sulfur flotation tailings with iron grade of 26.06%,which will go to iron concentrate for its high magnetism during low intensity magnetic separation process,and cause sulfur content beyond the standard.In order to achieve qualified iron concentrate,desulfuration of iron concentrate from low intensity magnetic separation(LIMS) by reverse flotation is conducted.Results show that,through closed circuit process of one roughing-one cleaning-one scavenging and middles back to the flow-sheet in turn to deal with LIMS concentrate with 63.14% iron and 2.05% sulfur,qualified iron concentrate with iron grade of 64.53%,sulfur grade of 0.28% and iron recovery of 47.09% is achieved.Desulfuration of reverse flotation for LIMS iron concentrate has good index and can provide reference for on-site process transformation.

Key words: LIMS iron concentrate, Magnetite, Pyrrhotite, Desulfuration by reverse flotation