东北大学学报(自然科学版) ›› 2013, Vol. 34 ›› Issue (11): 1647-1650.DOI: 10.12068/j.issn.1005-3026.2013.11.030

• 资源与土木工程 • 上一篇    下一篇

鞍山式赤铁矿石反浮选尾矿铁品位偏高机制

李丽匣,朱玉兰,袁致涛,阎赞   

  1. (东北大学资源与土木工程学院,辽宁沈阳110819)
  • 发布日期:2013-07-09
  • 通讯作者: 李丽匣
  • 作者简介:李丽匣(1980-),女,河北定州人,东北大学副教授,博士;袁致涛(1971-),男,湖北大冶人,东北大学教授.
  • 基金资助:
    国家自然科学基金青年基金资助项目(51104034);中央高校基本科研业务费专项资金资助项目(N110401002);中国博士后科学基金资助项目(2011M500826).

Mechanism for Higher Iron Grade of Reverse Flotation Tailings of AnshanType Hematite Ore

LI Lixia, ZHU Yulan, YUAN Zhitao, YAN Zan   

  1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China.
  • Published:2013-07-09
  • Contact: LI Lixia
  • About author:-
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摘要: 针对鞍山式赤铁矿石反浮选流程中存在的浮选尾矿铁品位偏高的问题,借助X射线衍射分析、化学多元素分析、粒度分析、扫描电子显微镜等检测手段,对选别流程中样品的化学多元素组成、物相组成、粒度分布及矿物的单体解离度进行了研究.结果表明,在各扫选尾矿中存在着一些单体解离高的微细铁矿物颗粒,其吸附在粗粒级脉石矿物表面,形成“载体浮选”进入到尾矿中,造成尾矿铁品位偏高.

关键词: 赤铁矿, 载体浮选, 吸附罩盖, 反浮选, 品位

Abstract: For the high iron grade in tailings of Anshantype hematite reverse flotation process, chemical element composition, phase composition, particle size distribution and mineral dissociation degree of samples collected from reverse flotation process were carried out by means of Xray diffraction analysis, chemical element analysis, granularity analysis and scanning electron microscope. The results show that some highly dissociated superfine iron minerals exist in scavenging tailings, which adsorb on some coarse gangue minerals to form “carrier flotation” and entered into tailings along with the carrier, and cause the higher iron grade of tailings.

Key words: hematite, carrier flotation, adsorption, reverse flotation, grade

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