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金属矿山 ›› 2014, Vol. 43 ›› Issue (05): 87-90.

• 矿物工程 • 上一篇    下一篇

某磁选铁精矿浮选柱阳离子反浮选试验

王伟之1,2,赵礼兵1,陈丽平1,张庆峰3   

  1. 1.河北联合大学矿业工程学院,河北 唐山 063009;2.河北省矿业开发与安全技术实验室,河北 唐山 063009;3.河北钢铁集团矿业有限公司司家营铁矿,河北 唐山 063000
  • 出版日期:2014-05-15 发布日期:2014-09-11
  • 基金资助:

    * 国家国际科技合作专项(编号:2012DFR70320),唐山市科技计划项目(编号:12140208A-19)。

Cationic Reverse Flotation of a Magnetic Iron Concentrate Using Flotation Column

Wang Weizhi1,2,Zhao Libing1,Chen Liping1,Zhang Qingfeng3   

  1. 1.College of Mining Engineering,Hebei United University,Tangshan 063009,China; 2.Mining Development and Safety Technology Key Lab of Hebei Province,Tangshan 063009,China;3.Sijiaying Iron Mine,Hebei Iron Steel Group Mining Co.,Ltd.,Tangshan 063000,China
  • Online:2014-05-15 Published:2014-09-11

摘要: 冀东某选矿厂磁选铁精矿粒度较细(-0.074 mm占91.60%),铁矿物单体解离度高达94.4%,且在细粒级明显富集。为了进一步提高该精矿铁品位,以现场流程精矿为试样、以微泡逆流接触式浮选柱为分选设备、以GE-609为阳离子反浮选捕收剂,进行了提铁降硅试验。结果表明,在粗选给矿浓度为35%、给矿速度为893 mL/min、GE-609用量为60 g/t、充气量为2.0 L/min、泡沫层高度为30 cm情况下,采用1粗2扫、中矿顺序返回流程处理该试样,可获得铁品位为68.12%、铁回收率为98.88%的铁精矿,尾矿铁品位仅为9.92%,表明微泡逆流接触式浮选柱和阳离子捕收剂GE-609适用于该试样的反浮选提铁降硅。

关键词: 浮选柱, 阳离子捕收剂GE-609, 反浮选, 提铁降硅

Abstract: The magnetic iron concentrate (91.60% -0.074 mm) of an iron plant in eastern Hebei province is fine disseminated.Its degree of iron liberation reaches 94.4%,and is obviously enriched in fine fractions.In order to increase the iron grade of the concentrate,iron increase and silicon reduction experiments was carried out with on-site concentrate as the object,micro-bubble countercurrent contacting flotation column as equipment,and GE-609 as the cationic reverse flotation collector.The results showed that iron concentrate with iron grade of 68.12%,recovery of 98.88% were obtained with pulp density of 35%,feeding speed of 893 mL/min,GE-609 dosage of 60 g/t,inflating volume of 2.0 L/min,foam layer of 30 cm through process of one roughing,two scavenging,middles back to the flow-sheet in turn,and 9.92% iron in iron tailings.It indicates that it is rational to deal the ore with micro-bubble countercurrent contacting flotation column and cationic collector GE-609.

Key words: Flotation column, Cationic collector GE-609, Reverse flotation, Iron increase and silicon reduction