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Thickening at Karara – The Role of Test Work and Innovative Design

机译：Karara的增厚–测试工作和创新设计的作用

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摘要

As the iron ore/magnetite boom gains momentum, it is particularly important to questionrnestablished past trends and explore the potential of alternative design options. Traditionally, 'rulernof thumb' methods have been used to size dewatering equipment. Greater consideration needsrnto be given to technological advancements and specifi c throughput testing of each ore body typernbased on innovative developments.rnThis paper will describe how an innovative approach resulted not only in signifi cant savingsrnin capital cost and site work hours but also delivered a truly optimised design for the thickenerrnduty at Karara. Test work also played a crucial role and a comprehensive test work program onrnthe ore samples showed the scale-up benefi ts of new technology in thickener designs. Workingrnclosely with the Karara team during the laboratory testing proved the old sizing theories for ironrnore/magnetite processing have been superseded with the knowledge and results of the industry'srnnewest feedwell technology. Increased solids fl ux and rise rates in the testing process proved veryrnsuccessful, resulting in signifi cantly reduced thickener sizes and lower capital expense.rnMechanical design considerations such as removal of underfl ow and pump access led to arnpreference for an above-ground thickener confi guration, and the economics of a completernfabrication and installation package favoured steel construction for the thickener units.rnThe ultimate choice of the bolted/fl anged tank methodology provides both economic and timelyrnsolutions for the site installation including reduced man power and quick and safe site-work. Arnbenefi ts comparison between this design and other fabrication and installation procedures willrnalso be analysed in the paper.
机译：随着铁矿石/磁铁矿的繁荣发展，质疑既定的过去趋势并探索替代设计方案的潜力尤为重要。传统上，已经使用“ rulernof thumb”方法来确定脱水设备的尺寸。在创新发展的基础上，需要对每种矿体的技术进步和特定的通量测试给予更大的考虑。本文将描述创新方法如何不仅导致大量节省资金，现场工作时间，而且实现了真正优化的设计在Karara的浓缩机。测试工作也起着至关重要的作用，关于矿石样品的全面测试工作计划显示了增稠剂设计中新技术的放大效益。在实验室测试期间与Karara团队紧密合作，证明了用于铁矿/磁铁矿加工的上浆理论已被业界最新的进料口技术的知识和结果所取代。事实证明，在测试过程中固体流量的增加和速率的提高是非常成功的，从而导致增稠剂尺寸的显着减小和资本支出的降低。rn机械设计方面的考虑，例如拆除下部流量和泵的通道，导致人们倾向于选择地上的增稠剂配置，完整的制造和安装包的经济性有利于增稠器单元的钢结构。螺栓/法兰储罐方法的最终选择为现场安装提供了经济，及时的解决方案，包括减少了人力，并实现了快速，安全的现场工作。本文还将分析这种设计与其他制造和安装程序之间的对比。

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  • 来源
    《》|2011年|p.425-429|共5页
  • 会议地点 Perth(AU)
  • 作者

    G Hart;

  • 作者单位

    Thickeners, Outotec Pty Ltd, Level 2, 1 Walker Avenue, West Perth WA 6005. Email: gena.hart@outotec.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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