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Benefi ciation of Low-Grade Haematite Ores

机译：低品位赤铁矿矿石的选矿

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摘要

Large tonnages of low-grade haematite ores need to be treated every day in China. One of thernmineralogical characteristics of these haematite ores is that the grain size of haematite is smallerrnthan that of quartz and is not uniform in the ores. Therefore, a fl ow sheet consisting of gravityrnconcentration, low-intensity magnetic separation, high-intensity magnetic separation and reversernfl otation is mainly used to separate haematite ores in China, to obtain acceptable benefi ciationrnperformance and reduce the operating costs. Nowadays, whether based on mineral processingrnpractice or theoretical analysis, the results show that the application of the above-mentioned fl owrnsheet is able to take full advantage of these mineral processing methods and achieves satisfactoryrnbenefi ciation of haematite ores. For example, when the iron grade of the haematite ore is aboutrn29 per cent Fe, a concentrate assaying 68 per cent Fe can be obtained and the recovery of iron isrnover 80 per cent. In the future, research work on the benefi ciation of haematite ores should focusrnon investigating the most feasible particle size for gravity concentration circuit feed so that thernoperating costs can be reduced and ultimately the separation performance can be improved.
机译：在中国，每天需要处理大量的低品位赤铁矿矿石。这些赤铁矿矿石的矿物学特征之一是，赤铁矿的晶粒尺寸小于石英，并且在矿石中不均匀。因此，在中国，赤铁矿的选矿主要采用重力选矿，低强度磁选，高强度磁选和反浮选的流程，以达到可接受的选矿性能，降低运营成本。如今，无论是基于选矿实践还是理论分析，结果都表明，上述流程的应用能够充分利用这些选矿方法，达到令人满意的赤铁矿选矿的目的。例如，当赤铁矿矿石的铁品位约为铁的29％时，可以得到68％的铁精矿，铁的回收率超过80％。今后，有关赤铁矿选矿的研究工作应集中在研究重力浓缩循环进料的最可行粒度上，以减少浮选成本并最终改善分离性能。

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  • 来源
    《Iron ore 2011》|2011年|p.545-556|共12页
  • 会议地点 Perth(AU)
  • 作者

    D Wei; Z Guan; S Gao; W Liu; C Han; B Cui;

  • 作者单位

    College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, PR China. Email: dzwei@mail.neu.edu.cn;

    College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, PR China. Email: guanzichuan@mail.neu.edu.cn;

    College of Resources and Civil Engineering, Northeastern University, Northeastern University, Shenyang 110819, PR China. Email: gaoshuling@mail.neu.edu.cn;

    College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, PR China. Email: liuwengang@mail.neu.edu.cn;

    College of Resources and Civil Engineering, Northeastern University, Northeastern University, Shenyang 110819, PR China. Email: hancong@mail.neu.edu.cn;

    College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, PR China. Email: cuibaoyu@mail.neu.edu.cn;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 铁矿石;
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