东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2012, Vol. 33 ›› Issue (7): 1030-1033+1042.DOI: -

• 论著 • 上一篇    下一篇

一种难选铁矿石磁选精矿直接反浮选的分散特征

罗溪梅;姚金;孙传尧;印万忠;   

  1. 东北大学资源与土木工程学院;北京矿冶研究总院;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(51074037);;

Dispersion character of magnetic separation concentrate in direct reverse flotation for a refractory iron ore

Luo, Xi-Mei (1); Yao, Jin (1); Sun, Chuan-Yao (2); Yin, Wan-Zhong (1)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China; (2) Beijing General Research Institute of Mining and Metallurgy, Beijing 100044, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Luo, X.-M.
  • About author:-
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摘要： 介绍了一种处理难选铁矿石磁选精矿的直接反浮选工艺.采用XRD,SEM和EDS等手段对原矿、精矿和尾矿的形貌及矿物组成进行了表征,重点探讨了分离过程中矿物的分散特征,为含碳酸盐难选铁矿石磁选精矿的直接反浮选技术提供理论基础.研究结果表明,采用添加分散剂直接反浮选技术可以获得合格铁精矿;有用铁矿物和脉石矿物细颗粒无选择性粘附在有用铁矿物和脉石粗颗粒表面,是造成铁矿石分离困难的主要原因;分散剂的加入有利于颗粒分散,从而实现了有用铁矿物与脉石矿物的选择性分离.

关键词: 难选铁矿石, 磁选精矿, 分散, 反浮选, 罩盖

Abstract: A simple direct reverse flotation technology of magnetic separation concentrate for a refractory iron ore was introduced. The morphology and mineral composition of raw ore, concentrate and tailings were discussed by means of XRD, SEM and EDS, and the dispersion character of minerals was mainly analyzed, which provided theory foundation for direct reverse flotation technology of magnetic separation concentrate for carbonate-containing refractory iron ore. The results showed that the qualified iron concentrate can be obtained by adding dispersant; lots of fine useful iron minerals and gangue particles are easy to cover non-selectively on the surface of coarse iron minerals and gangue particles, which is the main reason of the refractory iron ore difficult to be separated. It has been comprehensively demonstrated that dispersant plays an important role in dispersing the particles, and hence, the selective separation of useful iron minerals from gangues occurs.

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