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A Collaborative Approach to Iron Ore Benefi ciation at Assmang Khumani Processing Plant

机译：Assmang Khumani加工厂的铁矿石选矿的协作方法

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摘要

Commencing with early experiences in iron ore benefi ciation made at Beeshoek Mine, the paperrnfollows through the process of extensive mineralogical and metallurgical investigations carried outrnduring feasibility study. The paper will discuss the design process and logic followed over the lastrnyears, the challenges and decisions the design team faced in order to draw the conclusions thatrnultimately resulted in today's value add approach at Assmang's Khumani Operations.rnAs integral part of the benefi ciation concept, a focus is set on the jigs, explaining the plantrnconcepts, planned expansions and their contribution to the overall value add approach at the mine.rnThe case study is intended to describe the outcomes of the design versus the actual achievedrnand the further value add projects to be implemented. As for future prospect, the incorporation ofrnWet High Intensity Magnetic Separation (WHIMS) demonstrates Assmang Khumani's pursuit tornmaximise productivity and overall recovery.rnDMS was evaluated as an alternative to jigging within a comparative test work study, but inrnconclusion the option had to be excluded due to its inability to achieve the high density cutrnpoint required to achieve the sales specifi cations. In contrast, the investigation on producing anrnadditional middlings fraction on the lumpy ore jigs prove to be an adequate option for furtherrnimprovements of overall mass yield. With further liberation, a saleable product will be achieved byrnsecondary benefi ciation on Fines Jigs and WHIMS.rnConcluding, jigs are considered the most viable and cost effective benefi ciation process forrnoff-grade ore +0.8 - 32 mm at Beeshoek as well as at Khumani, while WHIMS is the process underrnconsideration for super fi nes recovery.
机译：从在Beeshoek矿山进行铁矿石选矿的早期经验开始，本文通过可行性研究期间的广泛矿物学和冶金学研究过程进行了跟踪。本文将讨论过去几年的设计流程和逻辑，设计团队面临的挑战和决​​策，以得出结论，最终得出当今Assmang的Khumani Operations的增值方法。作为选矿概念不可或缺的一部分，重点放在夹具上，解释工厂的概念，计划的扩建及其对矿山总体增值方法的贡献。案例研究旨在描述设计的结果与实际实现的结果以及将要实施的进一步增值项目。至于未来的前景，掺入rnWet高强度磁选（WHIMS）证明了Assmang Khumani追求最大化生产率和总体回收率.rnDMS在比较测试工作研究中被评估为跳汰的替代方法，但结论不明确，该选项由于以下原因而被排除在外它无法达到实现销售规格所需的高密度临界点。相比之下，在块状矿石夹具上生产额外的中级馏分的研究被证明是进一步提高整体产量的适当选择。随着进一步的解放，将通过精细跳汰机和WHIMS的二次选矿获得可销售的产品。最后，在Beeshoek和Khumani上，跳汰级矿石+0.8-32 mm被认为是最可行和最具成本效益的选矿工艺， WHIMS是超细粉回收的未充分考虑的过程。

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  • 来源
    《Iron ore 2011》|2011年|p.597-606|共10页
  • 会议地点 Perth(AU)
  • 作者

    S D?pp; T du Toit; D Ziaja;

  • 作者单位

    MBE Coal and Minerals Technology, Gottfried Hagen Str 20, Cologne 51105, Germany. Email: Susanne.Doepp@mbe-cmt.com;

    Assmang Iron Ore Ltd, Private Bag X503, Kathu, South Africa. Email: Thomasdt@assmang.co.za;

    MBE Coal and Minerals Technology, Gottfried Hagen Str 20, Cologne 51105, Germany. Email: Dieter.Ziaja@mbe-cmt.com;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 铁矿石;
  • 关键词

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