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Development Options for the Eyre Peninsula Magnetite – An Owner's Perspective

机译：业主眼中的艾尔半岛磁铁矿开发方案

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摘要

The Eyre Peninsula (EP) has been known for its iron ore for more than a century. Edward John Eyrernnoted the ironstone outcrop at what is now Iron Knob in the 19th century. Sir Douglas Mawson visitedrnand reported on the geology of the lower EP in 1906, noting the widespread presence of iron stone and thernlikelihood of copper being associated with the iron stone. Despite this knowledge there has been only onernsuccessful iron ore mining region developed on the EP and that is Iron Knob and the Middleback Rangesrnwhich have been mined continuously since 1899. The Middleback Ranges can justly lay claim to be birthrnplace of the Australian iron ore and steel industries.rnThe discovery of large scale haematite resources in Western Australia meant that there was no need tornseek out iron ore that needed benefi ciation. The low price of iron ore precluded further development ofrnthe EP and many other areas in Australia and overseas. This situation changed rapidly in the mid-2000srnwith the emergence of China as the world's industrial power house and the soaring demand and pricernfor many resources including iron ore. This triggered a fl urry of activity across Australia and led to thernrapid exploration and drives to develop the EP iron ore. A brief examination of the magnetic maps ofrnthe EP shows the wide spread presence of magnetite and associated smaller haematite deposits. A closerrnlook reveals the magnetite deposits to vary in formation style and host rock lithology as well as beingrnsignifi cantly altered by regional metamorphism.rnWhilst developers of the traditional direct ship haematite ores of Australia have had limited control on thernphysical and chemical characteristics of the product they produce, the developers of benefi ciated magnetiternores such as on the EP must decide what product they will target along a continuum of processing options.rnThese decisions must be made taking both the development constraints of the individual operation andrnorebody into account while balancing this with the end customer's needs. Every decision in this respect isrna trade-off between process effi ciency and product marketability. A comparison of the key trade-off factorsrnof grind size, DTR recovery and concentrate chemistry (Fe per cent, SiO2 per cent) for the EP againstrncurrent magnetite projects across Australia can be made showing in particular the potential of EP ores tornproduce highly saleable products at coarse grind sizes.rnInfrastructure provision has a large economic impact on magnetite mines and concentrators. Magnetiternrequires signifi cant amounts of water and power to drive the benefi ciation process and, in common withrnhaematite, transport infrastructure to provide a route to market. The potential exists on the EP to accessrnpower from the east coast grid network and to derive the necessary water by using this power to producerndesalinated water from the sea. All the EP ore deposits are relatively close to the coast and there are arnnumber of proposals to develop ports close to the mine sites. In the case of the Centrex Metals projects,rnthe port would be less than 100 km from the furthest deposit and slurry pipe lines for product transportrnpreclude the need for extensive rail development and the associated high operating costs. In addition therernare existing industrial towns in the region with some social infrastructure already in place.rnA comparison of the attributes and location of the EP iron ore deposits give promise of the developmentrnof high quality magnetite concentrates that complement the large scale haematite developments elsewherernin Australia.
机译：艾尔半岛（EP）因其铁矿石而闻名，已有一个多世纪的历史了。爱德华·约翰·埃雷恩（Edward John Eyrern）在19世纪的如今的铁旋钮上标注了铁矿石露头。道格拉斯·莫森爵士（Douglas Mawson）爵士在1906年到访了南德（EP）较低的地质，并指出了铁石的广泛存在以及与铁石有关的铜的可能性。尽管掌握了这些知识，但是在EP上仅开发了一个成功的铁矿开采区，即自1899年以来就一直在开采的Iron Knob和MiddlebackRangesrn。MiddlebackRanges可以合理地宣称是澳大利亚铁矿石和钢铁工业的发源地。 。在西澳大利亚州发现了大规模的赤铁矿资源，这意味着不需要寻找需要选矿的铁矿石。铁矿石的低价妨碍了EP和澳大利亚及其他许多地区的进一步发展。随着中国成为世界工业强国以及对包括铁矿石在内的许多资源的需求和价格飞涨，这种情况在2000年代中期迅速改变。这引发了整个澳大利亚的一连串活动，导致了疯狂的勘探并推动了EP铁矿石的开发。对EP磁图的简要检查表明，磁铁矿和相关的较小的赤铁矿矿床分布广泛。仔细观察可以发现磁铁矿矿床的地层样式和宿主岩石岩性以及区域变质作用都被改变了。尽管澳大利亚传统直船赤铁矿矿石的开发商对所生产产品的物理和化学特性的控制有限，例如EP上的精选磁铁矿的开发者必须决定他们在连续的处理选项中要针对的产品。必须在兼顾最终操作和最终用户的利益的同时，考虑到单个操作的开发约束和主体的制定。需要。在这方面的每个决定都是在过程效率和产品可销售性之间的权衡取舍。可以比较澳大利亚各地的EP反对当前磁铁矿项目的主要磨矿尺寸，DTR回收率和精矿化学成分（Fe％，SiO2％）的主要折衷因素，尤其显示出EP矿石在生产高销售产品方面的潜力。基础设施的设置对磁铁矿和选矿厂有很大的经济影响。 Magnetitern需要大量的水和电力来驱动选矿过程，并且通常与赤铁矿一起运输基础设施，以提供进入市场的途径。 EP上存在从东海岸电网获取电力并通过使用该电力从海水中生产海水淡化水来获取必要水的潜力。所有的EP矿床都相对靠近海岸，并且有很多提议在靠近矿区的地方开发港口。就Centrex Metals项目而言，港口距离用于产品运输的最远的沉积物和矿浆管道不到100公里-无需进行大规模的铁路开发和相关的高运营成本。此外，该地区还存在一些工业城镇，并且已经建立了一些社会基础设施。对EP铁矿床的属性和位置进行比较后，就可以开发出高质量的磁铁矿精矿，从而补充了澳大利亚其他地方大规模的赤铁矿开发。

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  • 来源
    《Iron ore 2011》|2011年|p.29|共1页
  • 会议地点 Perth(AU)
  • 作者

    J White; B Hammond;

  • 作者单位

    Centrex Metals Limited, Unit 1102, 147 Pirie Street, Adelaide SA 5000. Email: jwhite@centrexmetals.com.au;

    Chief Operating Offi cer, Eyre Iron Pty Ltd, Level 9, 420 King William Street, Adelaide SA 5000. Email: ben.hammond@eyreiron.com.au;

  • 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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